Novel Electrochemical Sensors Based on Cuprous Oxide-Electrochemically Reduced Graphene Oxide Nanocomposites Modified Electrode toward Sensitive Detection of Sunset Yellow
作者：
He, Quanguo;Liu, Jun;Liu, Xiaopeng;Xia, Yonghui;Li, Guangli* ;...
期刊：
Molecules ,2018年23(9):2130- ISSN：1420-3049
通讯作者：
Li, Guangli;Chen, Dongchu
作者机构：
[He, Quanguo; Li, Guangli; Liu, Jun; Chen, Dongchu; Li, GL] Foshan Univ, Sch Mat Sci & Energy Engn, Foshan 528000, Peoples R China.;[He, Quanguo; Li, Guangli; Liu, Xiaopeng; Liu, Jun] Hunan Univ Technol, Coll Life Sci & Chem, Zhuzhou 412007, Peoples R China.;[Xia, Yonghui] Zhuzhou Inst Food & Drug Control, Zhuzhou 412000, Peoples R China.;[Deng, Peihong] Hengyang Normal Univ, Dept Chem & Mat Sci, Hengyang 421008, Peoples R China.
通讯机构：
[Li, GL; Chen, DC] F;[Li, Guangli] H;Foshan Univ, Sch Mat Sci & Energy Engn, Foshan 528000, Peoples R China.;Hunan Univ Technol, Coll Life Sci & Chem, Zhuzhou 412007, Peoples R China.
关键词：
cuprous oxide nanoparticles;reduced graphene oxide;modified electrode;sunset yellow;second-derivative linear sweep voltammetry
摘要：
Control and detection of sunset yellow is an utmost demanding issue, due to the presence of potential risks for human health if excessively consumed or added. Herein, cuprous oxide-electrochemically reduced graphene nanocomposite modified glassy carbon electrode (Cu(2)O-ErGO/GCE) was developed for the determination of sunset yellow. The Cu(2)O-ErGO/GCE was fabricated by drop-casting Cu(2)O-GO dispersion on the GCE surface following a potentiostatic reduction of graphene oxide (GO). Scanning electron microscope and X-ray powder diffractometer was used to characterize the morphology and microstructure of the modification materials, such as Cu(2)O nanoparticles and Cu(2)O-ErGO nanocomposites. The electrochemical behavior of sunset yellow on the bare GCE, ErGO/GCE, and Cu(2)O-ErGO/GCE were investigated by cyclic voltammetry and second-derivative linear sweep voltammetry, respectively. The analytical parameters (including pH value, sweep rate, and accumulation parameters) were explored systematically. The results show that the anodic peak currents of Cu(2)O-ErGO /GCE are 25-fold higher than that of the bare GCE, due to the synergistic enhancement effect between Cu(2)O nanoparticles and ErGO sheets. Under the optimum detection conditions, the anodic peak currents are well linear to the concentrations of sunset yellow, ranging from 2.0 x 10(-8) mol/L to 2.0 x 10(-5) mol/L and from 2.0 x 10(-5) mol/L to 1.0 x 10(-4) mol/L with a low limit of detection (S/N = 3, 6.0 x 10(-9) mol/L). Moreover, Cu(2)O-ErGO/GCE was successfully used for the determination of sunset yellow in beverages and food with good recovery. This proposed Cu(2)O-ErGO/GCE has an attractive prospect applications on the determination of sunset yellow in diverse real samples.
语种：
英文
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纳米Cu_2O-还原石墨烯复合修饰玻碳电极用于多巴胺的检测
作者：
贺全国;李广利;刘军;刘晓鹏;梁静;...
期刊：
食品科学 ,2018年39(20):308-314 ISSN：1002-6630
作者机构：
湖南工业大学生命科学与化学学院, 湖南, 株洲, 412007;衡阳师范学院化学与材料科学学院, 湖南, 衡阳, 421008;[贺全国; 李广利; 刘军; 刘晓鹏; 梁静] 湖南工业大学生命科学与化学学院, 湖南, 株洲, 412007;[邓培红] 衡阳师范学院化学与材料科学学院, 湖南, 衡阳, 421008
关键词：
纳米Cu2O;还原石墨烯;修饰电极;多巴胺;电催化氧化
摘要：
通过电化学还原法制备纳米Cu_2O/还原石墨烯复合修饰电极(Cu_2O-reduced graphene oxide nanocomposite modified glass carbon electrode,Cu_2O-RGO/GCE),用于多巴胺(dopamine,DA)的检测。采用扫描电镜和X-射线粉末衍射仪对不同修饰电极进行微观形貌表征,进一步优化电化学还原条件和测定DA实验条件。此外,通过循环伏安法考察DA在裸电极及RGO或Cu_2O-RGO上的电化学响应。Cu_2O-RGO/GCE实现抗坏血酸(ascorbic acid,AA)、DA和尿酸(uric acid,UA)氧化峰的有效分离,AA-DA和DA-UA的氧化峰电位差分别为204 mV和144 mV。该修饰电极检测的线性范围为1×10~(-8)~1×10~(-6) mol/L和1×10~(-6)~8×10~(-5) mol/L,检出限为6.0×10~(-9) mol/L。该修饰电极用于盐酸多巴胺注射液和血清中DA的含量测定,获得结果较好。
语种：
中文
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PREPARATION OF CU2O-REDUCED GRAPHENE NANOCOMPOSITE MODIFIED ELECTRODES TOWARDS ULTRASENSITIVE DOPAMINE DETECTION
作者：
He, Quanguo;Liu, Jun;Liu, Xiaopeng;Li, Guangli* ;Deng, Peihong* ;...
期刊：
Sensors ,2018年18(1):199 ISSN：1424-3210
通讯作者：
Li, Guangli;Deng, Peihong
作者机构：
[He, Quanguo; Li, Guangli; Liang, Jing; Liu, Xiaopeng; Liu, Jun] Hunan Univ Technol, Sch Life Sci & Chem, Hunan Key Lab Biomed Nanomat & Devices, Zhuzhou 412007, Peoples R China.;[Deng, Peihong] Hengyang Normal Univ, Dept Chem & Mat Sci, Hengyang 421008, Peoples R China.
通讯机构：
[Li, Guangli; Deng, Peihong] H;Hunan Univ Technol, Sch Life Sci & Chem, Hunan Key Lab Biomed Nanomat & Devices, Zhuzhou 412007, Peoples R China.;Hengyang Normal Univ, Dept Chem & Mat Sci, Hengyang 421008, Peoples R China.
关键词：
Cu2O nanoparticles;dopamine detection;electrochemical oxidation;modified electrode;reduced graphene oxide
摘要：
Cu<inf>2</inf>O-reduced graphene oxide nanocomposite (Cu<inf>2</inf>O-RGO) was used to modify glassy carbon electrodes (GCE), and applied for the determination of dopamine (DA). The microstructure of Cu<inf>2</inf>O-RGO nanocomposite material was characterized by scanning electron microscope. Then the electrochemical reduction condition for preparing Cu<inf>2</inf>O-RGO/GCE and experimental conditions for determining DA were further optimized. The electrochemical behaviors of DA on the bare electrode, RGO- and Cu<inf>2</inf>O-RGO-modified electrodes were also investigated using cyclic voltammetry in phosphate-buffered saline solution (PBS, pH 3.5). The results show that the oxidation peaks of ascorbic acid (AA), dopamine (DA), and uric acid (UA) could be well separated and the peak-to-peak separations are 204 mV (AA-DA) and 144 mV (DA-UA), respectively. Moreover, the linear response ranges for the determination of 1 ×10<sup>-</sup><sup>8</sup>mol/L~1 ×10<sup>-</sup><sup>6</sup>mol/L and 1 ×10<sup>-</sup><sup>6</sup>mol/L~8 ×10<sup>-</sup><sup>5</sup>mol/L with the detection limit 6.0 ×10<sup>-</sup><sup>9</sup>mol/L (S/N = 3). The proposed Cu2O-RGO/GCE was further applied to the determination of DA in dopamine hydrochloride injections with satisfactory results.<br/> ©2018 by the authors. Licensee MDPI, Basel, Switzerland.
语种：
英文
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MnO_2纳米棒-还原石墨烯复合修饰玻碳电极用于苋菜红的检测
作者：
贺全国;刘晓鹏;邓培红;刘军;李广利;...
期刊：
复合材料学报 ,2018年35(11):3227-3234 ISSN：1000-3851
通讯作者：
Deng, Peihong(dph1975@163.com)
作者机构：
[贺全国; 刘晓鹏; 刘军; 李广利; 梁静] College of Life Science and Chemistry, Hu'nan University of Technology, Zhuzhou;412007, China;[邓培红] Department of Chemistry and Material Science, Hengyang Normal University, Hengyang;421008, China;[贺全国; 刘晓鹏; 刘军; 李广利; 梁静] 412007, China
通讯机构：
[Deng, P.] D;Department of Chemistry and Material Science, Hengyang Normal University, Hengyang, China
关键词：
MnO2纳米棒;还原石墨烯;修饰电极;苋菜红;电催化氧化
摘要：
利用电化学还原法制备MnO_2纳米棒-还原石墨烯复合修饰电极(MnO_2NRs-ErGO/GCE)用于苋菜红的检测。采用SEM和XRD分别对修饰电极材料进行微观形貌和成分结构表征。通过循环伏安法考察了苋菜红在裸电极、ErGO/GCE和MnO_2NRs-ErGO/GCE上的电化学行为,并对测定条件如pH值、富集电位、富集时间进行了优化。结果表明,MnO_2NRs-ErGO增大了GCE电化学活性面积,提高了苋菜红的电化学氧化响应。在最优的检测条件下,MnO_2NRs-ErGO/GCE线性扫描伏安法检测苋菜红线性范围为2.0×10~(-8)~1.0×10~(-5) mol/L和1.0×10~(-5)~ 4.0×10~(-4) mol/L,检测限为1.0×10~(-8) mol/L。MnO_2NRs-ErGO/GCE用于真实饮料样品检测,获得满意结果。
语种：
中文
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纳米Fe_3O_4-还原氧化石墨烯复合修饰玻碳电极的制备及电化学检测多巴胺
作者：
贺全国;梁静;李广利;刘军;刘晓鹏;...
期刊：
复合材料学报 ,2018年35(9):2542-2550 ISSN：1000-3851
通讯作者：
He, Quanguo(hequanguo@126.com)
作者机构：
[贺全国; 梁静; 李广利; 刘军; 刘晓鹏] College of Life Science and Chemistry, Hu'nan University of Technology, Zhuzhou;412000, China;[邓培红] Department of Chemistry and Material Science, Hengyang Normal University, Hengyang;421008, China;[贺全国; 梁静; 李广利; 刘军; 刘晓鹏] 412000, China
通讯机构：
[He, Q.] C;College of Life Science and Chemistry, Hu'nan University of Technology, Zhuzhou, China
关键词：
纳米Fe3O4;还原氧化石墨烯;修饰电极;多巴胺;电分析
摘要：
通过电化学还原法制备纳米Fe_3O_4-还原氧化石墨烯复合修饰玻碳(Fe_3O_4-rGO/GCE)电极,用于多巴胺(DA)的检测。采用SEM、TEM和循环伏安对纳米Fe_3O_4-rGO复合材料进行表征。在pH为7.0的磷酸盐缓冲液(PBS)中,采用循环伏安法研究了DA在纳米Fe_3O_4-rGO/GC上的电化学行为。实验结果表明,较裸GC电极和rGO修饰(rGO/GC)电极,由于纳米Fe_3O_4与rGO的协同作用,纳米Fe_3O_4-rGO/GC显著增大了Fe_3O_4-rGO/GC复合材料电极电化学活性面积和氧化峰电流强度i_(pa)。DA的浓度在6.0×10~(-8)~2.0×10~(-6) mol/L和2.0×10~(-6)~8.0×10~(-5) mol/L范围内,与氧化峰电流强度i_(pa)呈良好的线性关系,检出限达4.0×10~(-9) mol/L(信噪比S/N=3)。抗坏血酸和尿酸共存物几乎不干扰DA的测定,选择性高。Fe_3O_4-rGO/GC修饰电极用于盐酸DA注射液中的DA含量测定,获得结果较好,回收率为97.1% ~103.9%。
语种：
中文
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石墨烯复合材料在电化学检测食品中亚硝酸盐的研究进展
作者：
刘晓鹏;贺全国;刘军;李广利;梁静;...
期刊：
食品科学 ,2018年39(23):337-345 ISSN：1002-6630
作者机构：
湖南工业大学生命科学与化学学院, 湖南, 株洲, 412007;衡阳师范学院化学与材料科学学院, 湖南, 衡阳, 421008;[刘晓鹏; 贺全国; 刘军; 李广利; 梁静] 湖南工业大学生命科学与化学学院, 湖南, 株洲, 412007;[邓培红] 衡阳师范学院化学与材料科学学院, 湖南, 衡阳, 421008
关键词：
亚硝酸盐;电化学检测;石墨烯;复合材料;食品检测;电化学传感器
摘要：
亚硝酸盐是一种常见的食品添加剂,过量的亚硝酸盐可与人体内的氨基化合物反应形成强致癌物亚硝胺化合物,因此对亚硝酸盐的检测极其必要。与其他传统检测方法相比,电化学法具有仪器简单、操作方便、分析快速和灵敏度高等优点。石墨烯具有电化学窗口宽、电化学稳定性好、电催化活性高和电子转移速率快等电化学特性,故石墨烯及其复合材料是用于检测亚硝酸盐电化学传感器的理想电极修饰材料。石墨烯与其他功能材料复合能进一步改善其可分散与可加工性能,提高修饰电极的电催化活性和检测选择性。本文综述了纳米金属粒子/石墨烯、金属复合物/石墨烯、纳米金属氧化物粒子/石墨烯、高分子纳米材料/石墨烯、非金属纳米材料/石墨烯等复合石墨烯材料修饰电极在电化学法检测亚硝酸盐方面的研究进展,并重点阐述了相关设计思路与电极反应机理,深入分析比较了不同复合材料修饰电化学传感器的检测效果,从而说明采用基于石墨烯复合材料修饰电极电化学检测亚硝酸盐更具优势。最后讨论了石墨烯复合材料修饰电极的不足,展望了其在食品中亚硝酸盐检测的应用前景和未来发展方向。
语种：
中文
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PVP-GR/GCE电化学检测塑料制品中双酚A的研究
作者：
贺全国;刘晓鹏;邓培红;刘军;李福枝;...
期刊：
湖南工业大学学报 ,2018年10(3):8-15 ISSN：1673-9833
作者机构：
湖南工业大学生命科学与化学学院 湖南株洲 412007;衡阳师范学院化学与材料科学学院 湖南衡阳 421008;[刘军; 贺全国; 李广利; 刘晓鹏; 李福枝] 湖南工业大学;[邓培红] 衡阳师范学院
关键词：
聚乙烯吡咯烷酮;石墨烯;双酚A;二阶导数线性扫描伏安法;塑料制品
摘要：
针对塑料制品中双酚A(BPA)检测问题,制备了聚乙烯吡咯烷酮-石墨烯复合膜修饰玻碳电极(PVP-GR/GCE)并建立了BPA的电化学检测方法.通过扫描电子显微镜对PVP-GR的形貌进行了表征;以循环伏安法分别对GCE、PVP/GCE、GR/GCE以及PVP-GR/GCE进行了电化学表征;采用二阶导数线性扫描伏安法研究了PVP-GR/GCE对BPA的电化学性能;对检测条件进行了优化,并在最佳检测条件下对该电化学检测方法的线性范围、检测限、重现性、再现性、稳定性、选择性以及样品加标回收率进行了研究.实验结果表明:PVP-GR仍具有GR的特有性能,且其在水溶液中的分散性优于GR;K3[Fe(CN)6]在PVP-GR/GCE上的氧化峰电流最大,即PVP的引入改善了GR的水溶性,使PVP-GR/GCE的电化学性能增强;BPA在PVP-GR/GCE的电化学响应较裸GCE明显增强;在最佳检测条件下,BPA的氧化峰电流与其浓度在0.01～0.40μmol/L和0.40～60.00μmol/L范围内呈良好的线性关系,检测限为8.0 nmol/L(信噪比为3),且该方法具有良好的选择性、灵敏度、重现性和稳定性,并成功被用于塑料制品中BPA的检测,回收率为97.3％～105.2％.
语种：
中文
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Sensitive and Selective Detection of Tartrazine Based on TiO2-Electrochemically Reduced Graphene Oxide Composite-Modified Electrodes
作者：
He, Quanguo;Liu, Jun;Liu, Xiaopeng;Li, Guangli;Deng, Peihong* ;...
期刊：
Sensors ,2018年18(6):1911 ISSN：1424-3210
通讯作者：
Chen, Dongchu;Deng, Peihong
作者机构：
[He, Quanguo; Li, Guangli; Liu, Jun; Chen, Dongchu] Foshan Univ, Sch Mat Sci & Energy Engn, Foshan 528000, Peoples R China.;[He, Quanguo; Deng, Peihong; Liang, Jing; Liu, Xiaopeng] Hengyang Normal Univ, Dept Chem & Mat Sci, Hengyang 421008, Peoples R China.;[He, Quanguo; Li, Guangli; Deng, Peihong; Liang, Jing; Liu, Xiaopeng; Liu, Jun] Hunan Univ Technol, Coll Life Sci & Chem, Hunan Key Lab Biomed Nanomat & Devices, Zhuzhou 412007, Peoples R China.
通讯机构：
[Chen, Dongchu] F;[Deng, Peihong] H;Foshan Univ, Sch Mat Sci & Energy Engn, Foshan 528000, Peoples R China.;Hengyang Normal Univ, Dept Chem & Mat Sci, Hengyang 421008, Peoples R China.;Hunan Univ Technol, Coll Life Sci & Chem, Hunan Key Lab Biomed Nanomat & Devices, Zhuzhou 412007, Peoples R China.
关键词：
electrocatalysis;modified electrode;reduced graphene oxide;tartrazine;titanium dioxide
摘要：
TiO<inf>2</inf>-reduced graphene oxide composite-modified glassy carbon electrodes (TiO<inf>2</inf>–ErGO–GCE) for the sensitive detection of tartrazine were prepared by drop casting followed by electrochemical reduction. The as-prepared material was characterized by transmission electron microscopy (TEM) and X-ray diffraction (XRD). Cyclic voltammetry and second-order derivative linear scan voltammetry were performed to analyze the electrochemical sensing of tartrazine on different electrodes. The determination conditions (including pH, accumulation potential, and accumulation time) were optimized systematically. The results showed that the TiO<inf>2</inf>–ErGO composites increased the electrochemical active area of the electrode and enhanced the electrochemical responses to tartrazine significantly. Under the optimum detection conditions, the peak current was found to be linear for tartrazine concentrations in the range of 2.0 ×10<sup>−8</sup>–2.0 ×10<sup>−5</sup>mol/L, with a lower detection limit of 8.0 ×10<sup>−9</sup>mol/L (S/N = 3). Finally, the proposed TiO<inf>2</inf>–ErGO–GCEs were successfully applied for the detection of trace tartrazine in carbonated beverage samples.<br/> ©2018 by the authors. Licensee MDPI, Basel, Switzerland.
语种：
英文
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Fabrication of Amine-Modified Magnetite-Electrochemically Reduced Graphene Oxide Nanocomposite Modified Glassy Carbon Electrode for Sensitive Dopamine Determination
作者：
He, Quanguo;Liu, Jun;Liu, Xiaopeng;Li, Guangli* ;Chen, Dongchu* ;...
期刊：
Nanomaterials ,2018年8(4):194-194 ISSN：2079-4991
通讯作者：
Li, Guangli;Chen, Dongchu
作者机构：
[He, Quanguo; Li, Guangli; Liu, Jun; Chen, Dongchu; Li, GL] Foshan Univ, Sch Mat Sci & Energy Engn, Foshan 528000, Peoples R China.;[He, Quanguo; Li, Guangli; Liang, Jing; Liu, Xiaopeng; Liu, Jun] Hunan Univ Technol, Coll Life Sci & Chem, Zhuzhou 412007, Peoples R China.;[Deng, Peihong] Hengyang Normal Univ, Dept Chem & Mat Sci, Hengyang 421008, Peoples R China.
通讯机构：
[Li, GL; Chen, DC] F;[Li, Guangli] H;Foshan Univ, Sch Mat Sci & Energy Engn, Foshan 528000, Peoples R China.;Hunan Univ Technol, Coll Life Sci & Chem, Zhuzhou 412007, Peoples R China.
关键词：
NH2-Fe3O4 nanoparticles;dopamine;electrochemical oxidation;modified electrode;reduced graphene oxide
摘要：
Amine-modified magnetite (NH(2)-Fe(3)O(4))/reduced graphene oxide nanocomposite modified glassy carbon electrodes (NH(2)-Fe(3)O(4)/RGO/GCEs) were developed for the sensitive detection of dopamine (DA). The NH(2)-Fe(3)O(4)/RGO/GCEs were fabricated using a drop-casting method followed by an electrochemical reduction process. The surface morphologies, microstructure and chemical compositions of the NH(2)-Fe(3)O(4) nanoparticles (NPs), reduced graphene oxide (RGO) sheets and NH(2)-Fe(3)O(4)/RGO nanocomposites were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-Ray diffraction (XRD) and Fourier-transform infrared (FTIR) spectroscopy. The electrochemical behaviors of DA on the bare and modified GCEs were investigated in phosphate buffer solution (PBS) by cyclic voltammetry (CV). Compared with bare electrode and RGO/GCE, the oxidation peak current (ipa) on the NH(2)-Fe(3)O(4)/RGO/GCE increase significantly, owing to the synergistic effect between NH(2)-Fe(3)O(4) NPs and RGO sheets. The oxidation peak currents (ipa) increase linearly with the concentrations of DA in the range of 1 x 10(-8) mol/L - 1 x 10(-7) mol/L, 1 x 10(-7) mol/L - 1 x 10(-6) mol/L and 1 x 10(-6) mol/L - 1 x 10(-5) mol/L. The detection limit is (4.0 +/- 0.36) x10(-9) mol/L (S/N = 3). Moreover, the response peak currents of DA were hardly interfered with the coexistence of ascorbic acid (AA) and uric acid (UA). The proposed NH(2)-Fe(3)O(4)/RGO/GCE is successfully applied to the detection of dopamine hydrochloride injections with satisfactory results. Together with low cost, facile operation, good selectivity and high sensitivity, the NH(2)-Fe(3)O(4)/RGO/GCEs have tremendous prospects for the detection of DA in various real samples.
语种：
英文
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β-环糊精功能化石墨烯修饰电极同时测定邻硝基苯酚与对硝基苯酚
作者：
邓培红;梁姣丽;陈冬儿;蔡芬;黎秋燕;...
期刊：
分析测试学报 ,2018年37(2):204-210 ISSN：1004-4957
作者机构：
[邓培红; 梁姣丽; 陈冬儿; 蔡芬; 黎秋燕; 王婷] 衡阳师范学院化学与材料科学学院, 功能金属有机化合物湖南省重点实验室, 湖南, 衡阳, 421008
关键词：
β-环糊精功能化石墨烯;修饰电极;邻硝基苯酚;对硝基苯酚;电化学行为;测定
摘要：
通过滴涂法制备了环糊精功能化石墨烯修饰玻碳电极(β-CD-GR/GCE),采用循环伏安法和二阶导数线性扫描伏安法研究了邻硝基苯酚(o-NP)和对硝基苯酚(p-NP)在该修饰电极上的电化学行为.实验结果表明,在该修饰电极上o-NP和p-NP的还原电流显著增加,两还原峰得到有效分离.在优化条件下,使用二阶导数线性扫描伏安法对o-NP和p-NP进行定量分析,线性范围分别为0.2 ~ 10 µmol/L和0.06 ~ 10 µmol/L,检出限分别为0.08 µmol/L和0.02 µmol/L.该法可用于环境水样中o-NP和p-NP的快速准确测定.
语种：
中文
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Manganese dioxide Nanorods/electrochemically reduced graphene oxide nanocomposites modified electrodes for cost-effective and ultrasensitive detection of Amaranth
作者：
He, Quanguo;Liu, Jun;Liu, Xiaopeng;Li, Guangli* ;Deng, Peihong* ;...
期刊：
Colloids and Surfaces B: Biointerfaces ,2018年172:565-572 ISSN：0927-7765
通讯作者：
Li, Guangli;Deng, Peihong
作者机构：
[He, Quanguo; Li, Guangli; Liang, Jing; Liu, Xiaopeng; Liu, Jun] Hunan Univ Technol, Coll Life Sci & Chem, Hunan Key Lab Biomed Nanomat & Devices, Zhuzhou 412007, Peoples R China.;[Deng, Peihong; Liu, Xiaopeng] Hengyang Normal Univ, Dept Chem & Mat Sci, Hengyang 421008, Peoples R China.
通讯机构：
[Li, Guangli; Deng, Peihong] H;Hunan Univ Technol, Coll Life Sci & Chem, Hunan Key Lab Biomed Nanomat & Devices, Zhuzhou 412007, Peoples R China.;Hengyang Normal Univ, Dept Chem & Mat Sci, Hengyang 421008, Peoples R China.
关键词：
Amaranth detection;MnO(2) nanorods;Modified electrode;Reduced graphene oxide;Second-order derivative linear sweep;voltammogram
摘要：
A novel manganese dioxide nanorods-electrochemically graphene oxide nanocomposites modified glassy carbon electrode (MnO 2 NRs-ErGO/GCE) was developed for the rapid and sensitive detection of Amaranth in foodstuffs. The morphology, structure and composition of MnO 2 NRs, ErGO, and MnO 2 /ErGO were characterized by SEM and XRD. The electrochemical behavior of Amaranth on the bare GCE, ErGO/GCE, and MnO 2 NRs-ErGO/GCE were investigated by cyclic voltammetry and electrochemical impedance spectroscopy. The voltammetric conditions (including pH, scan rate, accumulation potential as well as time) were optimized systematically. Due to large electrochemical active area and low charge transfer resistance, the MnO 2 NRs-ErGO/GCE exhibited a great enhancement effect on the oxidation of Amaranth, and significant increased the oxidation peak current i pa (approximately 38-fold increase compared to that of bare GCE). Under the optimum voltammetric conditions, the i pa varied linearly with Amaranth concentration in the range of 0.02 μM–10 μM, and 10 μM–400 μM with a low detection limit of 1.0 nM (S/N = 3). Moreover, satisfactory results were obtained in the analysis of real samples. Together with the merits of rapidness, cost-effectivity, high sensitivity and selectivity, the result suggests the proposed MnO 2 NRs-ErGO/GCE have broad application prospects on the sensitive detection of Amaranth in various real samples. © 2018 Elsevier B.V.
语种：
英文
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培养创新型人才的综合化学实验教学模式探索与实践
作者：
唐斯萍;杨颖群;邓培红
期刊：
学园(学者的精神家园) ,2018年(4):57-58 ISSN：1674-4810
作者机构：
湖南衡阳师范学院化学与材料科学学院;[杨颖群; 邓培红; 唐斯萍] 衡阳师范学院
关键词：
创新型人才培养;综合化学实验;教学模式
摘要：
创新型人才培养在高校越来越引起重视与关注。创新型人才思维活跃,创新能力强。综合化学实验的开设旨在培养高年级本科学生将化学理论知识与实验技能相结合的能力,培养其提出问题、解决问题的能力,并且要求学生能够应用化学理论知识解决现实生活生产中的实际问题。将人才的创新性与综合化学实验技能相结合,培养出来的人才更适应经济社会发展的需求。本文主要就综合化学实验教学模式进行探讨与分析。
语种：
中文
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Ag/N-doped reduced graphene oxide incorporated with molecularly imprinted polymer: An advanced electrochemical sensing platform for salbutamol determination
作者：
Li, Junhua;Xu, Zhifeng;Liu, Mengqin;Deng, Peihong;Tang, Siping;...
期刊：
Biosensors and Bioelectronics ,2017年90:210-216 ISSN：0956-5663
通讯作者：
He, Lingzhi;Qian, Dong
作者机构：
[Tang, Siping; Liu, Mengqin; Deng, Peihong; Xu, Zhifeng; Li, Junhua; He, Lingzhi] Hengyang Normal Univ, Coll Chem & Mat Sci, Hengyang 421008, Peoples R China.;[Feng, Haibo; Li, Junhua; Jiang, Jianbo; Qian, Dong] Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.;[Li, Junhua] Hengyang Normal Univ, Key Lab Funct Organometall Mat, Hengyang 421008, Peoples R China.;[He, Lingzhi] Hunan Polytech Environm & Biol, Sch Med, Hengyang 421008, Peoples R China.
通讯机构：
[He, Lingzhi] H;[Qian, Dong] C;Hengyang Normal Univ, Coll Chem & Mat Sci, Hengyang 421008, Peoples R China.;Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.
关键词：
*Ag/N-doped reduced graphene oxide;*Electrochemical sensor;*Molecularly imprinted polymer;*Salbutamol
摘要：
In this work, the metallic silver and non-metallic nitrogen co-doped reduced graphene oxide (Ag-N-RGO) was first synthesized by a simple and cost-effective strategy, and then a molecularly imprinted polymer (MIP) was formed in situ at the surface of the prepared composite via electropolymerization of o-phenylenediamine in the presence of salbutamol as the template molecule. The electrochemical characterizations demonstrate that the bifunctional graphene-based composite shows improved catalytic performance than that of pristine graphene doped with one-component or none. The MIP sensor based on Ag-N-RGO owns high porous surface structure, resulting in the increased current response and enhanced recognition capacity than that of non-imprinted sensor. The outstanding performance of the developed sensor derives from the combined advantages of Ag-N-RGO with effective catalytic property and MIP with excellent selectivity. Under the optimal conditions, the electrochemical response of the developed sensor is linearly proportional to the concentration of salbutamol in the range of 0.03–20.00 µmol L−1 with a low detection limit of 7 nmol L−1. The designed sensor has exhibited the multiple advantages such as low cost, simple manufacture, convenient use, excellent selectivity and good reproducibility. Finally, the proposed method has been extended for the determinations of salbutamol in human urine and pork samples, and the satisfactory recoveries between 98.9–105.3% are achieved. © 2016 Elsevier B.V.
语种：
英文
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β-环糊精/石墨烯修饰乙炔黑电极快速检测水样中的对硝基苯酚
作者：
梁姣丽;邓培红;陈冬儿;蔡芬;黎秋燕;...
期刊：
衡阳师范学院学报 ,2017年38(06):169-172 ISSN：1673-0313
作者机构：
衡阳师范学院化学与材料科学学院,湖南 衡阳,421008;[蔡芬; 陈冬儿; 黎秋燕; 邓培红; 梁姣丽; 王婷] 衡阳师范学院
关键词：
对硝基苯酚;石墨烯;β-环糊精;乙炔黑电极;伏安测定
摘要：
制备了β-环糊精/石墨烯修饰乙炔黑电极（β-CD/GR/ABPE）,用循环伏安法研究了对硝基苯酚（4-NP）在β-CD/GR/ABPE上的电化学行为并优化了测定条件。结果表明,该修饰电极在0.05 mol/L H2SO4溶液中对4-NP有良好的电催化性能。利用二阶导数线性扫描伏安法对4-NP的含量进行测定,4-NP的还原峰电流与其浓度在1.0×10-72.0×10-5 mol/L和2.0×10-51.0×10-4 mol/L范围内呈良好的线性关系,检出限为2.0×10-8 mol/L。该修饰电极成功应用于水样中4-NP的含量的检测,方法简便、快速、灵敏。
语种：
中文
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香草醛在四氧化三铁纳米粒子功能化石墨烯修饰电极上的电化学行为及测定
作者：
邓培红;刘晓鹏;贺全国;李俊华
期刊：
衡阳师范学院学报 ,2017年(03):71-77 ISSN：1673-0313
作者机构：
衡阳师范学院 化学与材料科学学院,湖南 衡阳,421008;衡阳师范学院 化学与材料科学学院,湖南 衡阳 421008;湖南工业大学 绿色包装与生物纳米技术应用湖南省重点实验室,湖南 株洲 412007;湖南工业大学 绿色包装与生物纳米技术应用湖南省重点实验室,湖南 株洲,412007;[贺全国] 湖南工业大学
关键词：
化学修饰玻碳电极;四氧化三铁纳米粒子功能化石墨烯;香草醛;测定
摘要：
制备了四氧化三铁纳米粒子功能化石墨烯复合膜修饰玻碳电极,用二阶导数线性扫描伏安法研究香草醛在该修饰电极上的电化学行为,以及支持电解质、富集电位、富集时间、扫描速率等对香草醛伏安响应的影响.实验发现,四氧化三铁纳米粒子功能化石墨烯修饰电极测定香草醛具有较高的灵敏度和选择性.在0.1 mol·L-1 HCl溶液中,香草醛在约936 mV(vs.SCE) 处产生一灵敏的氧化峰.与未修饰的玻碳电极相比,峰电位负移,峰电流显著增加,说明该修饰电极对香草醛的电化学响应具有很好的催化增敏作用.利用二阶导数线性扫描伏安法进行定量分析,峰电流与香草醛的浓度在1.0×10-7 mol·L-1~1.0×10-5 mol·L-1和1.0×10-5 mol·L-1~1.0×10-4 mol·L-1范围内呈良好的线性关系,检出限为6.0×10-8 mol·L-1.
语种：
中文
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Molecularly imprinted fluorescent probe based on FRET for selective and sensitive detection of doxorubicin
作者：
Xu, Zhifeng* ;Deng, Peihong;Li, Junhua;Xu, Li;Tang, Siping
期刊：
Materials Science and Engineering B-Advanced Functional Solid-State Materials ,2017年218:31-39 ISSN：0921-5107
通讯作者：
Xu, Zhifeng
作者机构：
[Tang, Siping; Deng, Peihong; Xu, Zhifeng; Li, Junhua] Hengyang Normal Univ, Key Lab Funct Organometall Mat, Hunan Prov Univ, Coll Chem & Mat Sci, Hengyang 421008, Peoples R China.;[Xu, Li] South China Agr Univ, Coll Mat & Energy, Dept Appl Chem, Guangzhou 510642, Guangdong, Peoples R China.
通讯机构：
[Xu, Zhifeng] H;Hengyang Normal Univ, Key Lab Funct Organometall Mat, Hunan Prov Univ, Coll Chem & Mat Sci, Hengyang 421008, Peoples R China.
关键词：
Doxorubicin;Molecular imprinting;FRET;Molecular recognition;Fluorescent carbon dots
摘要：
In this work, a new type of fluorescent probe for detection of doxorubicin has been constructed by the combined use of fluorescence resonance energy transfer (FRET) technology and molecular imprinting technique (MIT). Using doxorubicin as the template, the molecularly imprinted polymer thin layer was fabricated on the surfaces of carbon dot (CD) modified silica by sol-gel polymerization. The excitation energy of the fluorescent donor (CDs) could be transferred to the fluorescent acceptor (doxorubicin). The FRET based fluorescent probe demonstrated high sensitivity and selectivity for doxorubicin. The detection limit was 13.8 nM. The fluorescent probe was successfully applied for detecting doxorubicin in doxorubicin-spiked plasmas with a recovery of 96.8-103.8%. a relative standard deviation (RSD) of 1.3-2.8%. The strategy for construction of FRET-based molecularly imprinted materials developed in this work is very promising for analytical applications. (C) 2017 Elsevier B.V. All rights reserved.
语种：
英文
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一种用于沙丁胺醇定量检测的分子印迹型电化学传感器及其制备方法
发明/设计人：
李俊华;许志锋;刘梦琴;邓培红;唐斯萍;...
申请/专利权人：
衡阳师范学院
申请/专利号：
CN201610705752.7
申请时间：
2016-8-23
公开号：
CN106290518A
公开时间：
2017-01-04
主申请人地址：
421008 湖南省衡阳市雁峰区黄白路165号
摘要：
本发明涉及电分析化学技术领域，具体公开了一种用于沙丁胺醇定量检测的分子印迹型电化学传感器及其制备方法。所述制备方法，包含如下步骤：S1～S4.制备N??RGO；S5.取N??RGO在水中超声分散，然后加入葡萄糖形成溶液A；S6.将NH<sub>3</sub>·H<sub>2</sub>O溶液加入到硝酸银溶液中，形成溶液B；S7.将溶液B和溶液A混合，搅拌，然后陈化，经离心、洗涤、干燥得Ag??N??RGO纳米复合材料；S8.取Ag??N??RGO纳米复合材料分散于有机溶剂中，然后涂覆在工作电极的表面，得Ag??N??RGO修饰电极；S9.将Ag??N??RGO修饰电极置于含邻苯二胺和沙丁胺醇的PBS缓冲溶液中进行循环伏安法扫描；S10.将经步骤S9处理过的电极除去聚合膜中的沙丁胺醇，得到MIP/Ag??N??RGO印迹电极。所述的化学电极或化学传感器具有极低的检出限以及良好的稳定性、抗干扰性和重现性。
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Facile synthesis of MnO2-embedded flower-like hierarchical porous carbon microspheres as an enhanced electrocatalyst for sensitive detection of caffeic acid
作者：
Li, Junhua;Jiang, Jianbo;Liu, Mengqin;Xu, Zhifeng;Deng, Peihong;...
期刊：
Analytica Chimica Acta ,2017年985:155-165 ISSN：0003-2670
通讯作者：
Qian, Dong;Yang, Chunming
作者机构：
[Liu, Mengqin; Deng, Peihong; Xu, Zhifeng; Li, Junhua; Tong, Chaoying] Hengyang Normal Univ, Coll Chem & Mat Sci, Hengyang 421008, Peoples R China.;[Li, Junhua; Jiang, Jianbo; Qian, Dong] Cent S Univ, Hunan Prov Key Lab Efficient & Clean Utilizat Man, Changsha 410083, Hunan, Peoples R China.;[Xie, Haobin; Li, Junhua] Hengyang Normal Univ, Key Lab Funct Organometall Mat, Hengyang 421008, Peoples R China.;[Qian, Dong] Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Peoples R China.;[Yang, Chunming] Hunan Normal Univ, Coll Chem & Chem Engn, Changsha 410081, Hunan, Peoples R China.
通讯机构：
[Qian, Dong] C;[Yang, Chunming] H;Cent S Univ, Hunan Prov Key Lab Efficient & Clean Utilizat Man, Changsha 410083, Hunan, Peoples R China.;Hunan Normal Univ, Coll Chem & Chem Engn, Changsha 410081, Hunan, Peoples R China.
关键词：
Caffeic acid;Carbon microspheres;Electrochemical sensor;MnO(2) nanorods
摘要：
Tailored designs/fabrications of hierarchical porous advanced electrode materials are of great importance for developing high-performance electrochemical sensors. Herein, we demonstrate a simple and low-cost in situ chemical approach for the facile synthesis of MnO<inf>2</inf>-embedded hierarchical porous carbon microspheres (MnO<inf>2</inf>/CM). By the characterizations of scanning electron microscopy, X-ray photoelectron spectroscopy, X-ray powder diffraction and energy dispersive spectroscopy, we evidenced that the synthesized product were flower-like carbon microspheres (CM) assembled by the bent flakes with thickness of about several nanometers and MnO<inf>2</inf>nanorods were highly dispersed and successfully decorated on the CM layers, resulting in a rough surface and three-dimensional microstructure. The greatest benefit from the combined porous CM with MnO<inf>2</inf>nanorods is that the MnO<inf>2</inf>/CM modified electrode has the synergetic catalysis effect on the electro-oxidation of caffeic acid, leading to the remarkable increase in the electron transfer rate and significant decrease in the over-potential for the caffeic acid oxidation in contrast to the bare electrode and CM modified electrode. This implies that the prepared MnO<inf>2</inf>/CM can be employed as an enhanced electrocatalyst for the sensitive detection of caffeic acid. Under the optimum conditions, the anodic peak current of caffeic acid is linear with its concentration in the range of 0.01–15.00 μmol L<sup>−1</sup>, and a detection limit of 2.7 nmol L<sup>−1</sup>is achieved based on S/N = 3. The developed sensor shows good selectivity, sensitivity, reproducibility, and also excellent recovery in the detections of real samples, revealing the promising practicality of the sensor for the caffeic acid detection.<br/> ©2017 Elsevier B.V.
语种：
英文
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检测食品中香草醛的石墨烯-氧化亚铜复合膜修饰乙炔黑电极及检测方法
发明/设计人：
邓培红;贺全国;曾荣英;张军
申请/专利权人：
衡阳师范学院
申请/专利号：
CN201610273021.X
申请时间：
2016-4-28
公开号：
CN105973956A
公开时间：
2016-09-28
主申请人地址：
421008 湖南省衡阳市雁峰区黄白路165号衡阳师范学院
摘要：
本发明公开了一种食品中香草醛的检测方法，属于分析化学领域或食品安全领域。以石墨烯负载氧化亚铜钠米粒子复合膜修饰乙炔黑电极为工作电极，利用电化学方法对食品中的香草醛进行检测。本发明的检测方法具有线性范围宽、灵敏度高、检出限低的优点，且该方法操作简单、测定快速、检测成本低、结果准确。
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Facile synthesis of 3D porous nitrogen-doped graphene as an efficient electrocatalyst for adenine sensing
作者：
Li, Junhua;Jiang, Jianbo;Feng, Haibo;Xu, Zhifeng;Tang, Siping;...
期刊：
RSC Advances ,2016年6(37):31565-31573 ISSN：2046-2069
通讯作者：
Qian, Dong
作者机构：
[Feng, Haibo; Li, Junhua; Jiang, Jianbo; Qian, Dong] Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Peoples R China.;[Tang, Siping; Deng, Peihong; Xu, Zhifeng; Li, Junhua] Hengyang Normal Univ, Coll Chem & Mat Sci, Hengyang 421008, Peoples R China.;[Li, Junhua; Qian, Dong] Cent S Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China.
通讯机构：
[Qian, Dong] C;Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Peoples R China.;Cent S Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China.
摘要：
In this work, a simple, low-cost and eco-friendly strategy for fabricating the three-dimensional porous nitrogen-doped graphene (3D-N-GN) is demonstrated by combining the hydrothermal assembly and freeze-drying process without using any framework support. The desired features for 3D-N-GN, such as rich macroporosity, nitrogen-doping structure and high active surface area have been confirmed by scanning electron microscopy, X-ray photoelectron spectroscopy and electrochemical techniques, respectively. In comparison with two-dimensional graphene (2D-GN) and nitrogen-doped graphene (2D-N-GN), 3D-N-GN makes a more negative shift in the oxidation peak potential of adenine together with a remarkable increase in the oxidation peak current, highlighting the importance of the nitrogen-doping and 3D construction of the graphene-based support for improving the electrocatalytic performance. It also indicates that 3D-N-GN can be used as an efficient electrocatalyst for adenine sensing. Furthermore, the sensing conditions are optimized and the resulting sensor displays excellent analytical performance in the detection of adenine at low concentrations ranging from 0.02 to 1.20 μM, with a detection limit of 8 nM. Finally, this proposed method not only exhibits preferable reproducibility, stability and adequate sensitivity, but also demonstrates good efficiency in the detection of adenine in biological fluids. ©The Royal Society of Chemistry 2016.
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英文
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