数学函数在物理化学相平衡教学中的应用
作者：
刘兴;赖华;周立君;屈景年;李俊华
期刊：
化学教育(中英文) ,2016年37(20):24-26 ISSN：1003-3807
作者机构：
衡阳师范学院化学与材料科学学院 湖南衡阳421008;衡阳师范学院数学与统计学院 湖南衡阳421001;[周立君; 刘兴; 屈景年; 李俊华; 赖华] 衡阳师范学院
关键词：
物理化学;相图;数学函数;理想完全互溶双液系;理想固溶体体系
摘要：
理想完全互溶双液系、理想完全互溶固溶体相图是其他双组分相图的基础。以理想溶液热力学理论为基础，分别对这2类相图进行了函数解析并给出了理论上的相图，其与已知的标准相图一致，对学习和研究相平衡有一定指导与参考意义。
语种：
中文
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Equilibrium and kinetic studies on adsorption of Pb(II) by activated palm kernel husk carbon
作者：
Yi, Zheng-ji;Yao, Jun* ;Chen, Hui-lun;Wang, Fei;Liu, Xing;...
期刊：
Desalination and Water Treatment ,2016年57(16):7245-7253 ISSN：1944-3994
通讯作者：
Yao, Jun;Xu, Jin-Sheng
作者机构：
[Yao, Jun; Wang, Fei; Yi, Zheng-ji; Chen, Hui-lun] Univ Sci & Technol Beijing, Sch Civil & Environm Engn, Beijing 100083, Peoples R China.;[Yao, Jun; Wang, Fei; Yi, Zheng-ji; Yao, J; Xu, Jin-Sheng; Chen, Hui-lun] Univ Sci & Technol Beijing, Natl Int Cooperat Base Environm & Energy, Beijing 100083, Peoples R China.;[Liu, Xing; Yi, Zheng-ji; Xu, Jin-Sheng] Hengyang Normal Univ, Dept Chem & Mat Sci, Key Lab Funct Organometall Mat Coll Hunan Prov, Hengyang 421008, Peoples R China.
通讯机构：
[Yao, Jun; Yao, J; Xu, JS] U;[Xu, Jin-Sheng] H;Univ Sci & Technol Beijing, Sch Civil & Environm Engn, Beijing 100083, Peoples R China.;Univ Sci & Technol Beijing, Natl Int Cooperat Base Environm & Energy, Beijing 100083, Peoples R China.;Hengyang Normal Univ, Dept Chem & Mat Sci, Key Lab Funct Organometall Mat Coll Hunan Prov, Hengyang 421008, Peoples R China.
关键词：
Pb(II);Adsorption;Activated palm kernel husk carbon (APKHC);Isotherm;Kinetics
摘要：
Batch experiments were conducted to study the ability of activated palm kernel husk carbon (APKHC) to adsorb Pb(II) ions from aqueous solutions. The effects of various operational parameters, such as temperature (25–55°C), pH (1.0–5.0), contact time (0–120 min), and adsorbent dose (0.5–3.5 g/L) were examined. The results suggested that the adsorption of Pb(II) is exothermic and strongly dependent on pH. The optimum pH for Pb(II) removal is 5.0. The Pb(II) uptake by APKHC was fast and reached an equilibrium in 80 min. The Pb(II) removal efficiency increased with increasing APKHC dosage up to 2.0 g/L, and then reached a plateau with approximately 97% of Pb(II) removed. Experimental data were fitted using Langmuir and Freundlich isotherms. The Pb(II) adsorption can be described well by the Langmuir model with a maximum monolayer uptake capacity of 98.04 mg/g. Kinetic study results suggested that the adsorption process proceeded according to the pseudo-second-order kinetic model. In short, APKHC can be used as an effective economical adsorbent for Pb(II) removal.
语种：
英文
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一种用于叶酸定量检测的化学修饰电极以及电化学传感器的制备方法
发明/设计人：
李俊华;许志锋;刘梦琴;张复兴;刘兴;...
申请/专利权人：
衡阳师范学院
申请/专利号：
CN201610889717.5
申请时间：
2016-10-12
公开号：
CN106568817A
公开时间：
2017-4-19
主申请人地址：
421008 湖南省衡阳市雁峰区黄白路165号
摘要：
本发明公开了一种用于叶酸定量检测的化学修饰电极以及电化学传感器的制备方法。该方法包括：S11.取多壁碳纳米管，加入浓硝酸和浓硫酸后超声，得悬浊液；S12.在上述的悬浊液中加乙醇，离心分离；然后加水离心分离至滤液pH值为6～8后，将沉淀物烘干得到羧基化的多壁碳纳米管；S13.取羧基化的多壁碳纳米管，加入水超声分散均匀，然后加入葡萄糖形成溶液A；S14.取硝酸银于水中搅拌溶解，随后逐滴加入浓NH<sub>3</sub>·H<sub>2</sub>O形成溶液B；S15.将溶液B加入溶液A中搅拌、陈化，经离心和洗涤后，于烘箱中干燥后得Ag/MWCNTs复合材料；S16.取Ag/MWCNTs复合材料在有机溶剂中分散得分散液；将分散液涂覆并固定在洗净的玻碳电极表面，即得所述的电极。由该方法制备得到的化学修饰电极检出限低，选择性好。
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Kinetics, equilibrium, and thermodynamics investigation on the adsorption of lead(II) by coal-based activated carbon
作者：
Yi, Zhengji;Yao, Jun* ;Zhu, Mijia;Chen, Huilun;Wang, Fei;...
期刊：
SpringerPlus ,2016年5(1):1-12 ISSN：2193-1801
通讯作者：
Yao, Jun
作者机构：
[Liu, Xing; Yi, Zhengji] Hengyang Normal Univ, Dept Chem & Mat Sci, Coll Hunan Prov, Key Lab Funct Organometall Mat, Hengyang 421008, Peoples R China.;[Yao, Jun; Wang, Fei; Chen, Huilun; Yi, Zhengji; Zhu, Mijia] Univ Sci & Technol Beijing, Sch Civil & Environm Engn, Xueyuan Rd 30, Beijing 100083, Peoples R China.;[Yao, Jun; Wang, Fei; Chen, Huilun; Yi, Zhengji; Zhu, Mijia] Univ Sci & Technol Beijing, Natl Int Cooperat Base Environm & Energy, Xueyuan Rd 30, Beijing 100083, Peoples R China.;[Yao, Jun] China Univ Geosci, Sinohungarian Joint Lab Environm Sci & Hlth, Sch Water Resource & Environm Engn, Beijing 100083, Peoples R China.
通讯机构：
[Yao, Jun] U;[Yao, Jun] C;Univ Sci & Technol Beijing, Sch Civil & Environm Engn, Xueyuan Rd 30, Beijing 100083, Peoples R China.;Univ Sci & Technol Beijing, Natl Int Cooperat Base Environm & Energy, Xueyuan Rd 30, Beijing 100083, Peoples R China.;China Univ Geosci, Sinohungarian Joint Lab Environm Sci & Hlth, Sch Water Resource & Environm Engn, Beijing 100083, Peoples R China.
关键词：
Adsorption;Coal-based activated carbon (CBAC);Isotherm;Kinetics;Pb(II);Thermodynamics
摘要：
The goal of this research is to investigate the feasibility of using activated coal-based activated carbon (CBAC) to adsorb Pb(II) from aqueous solutions through batch tests. Effects of contact time, pH, temperature and initial Pb(II) concentration on the Pb(II) adsorption were examined. The Pb(II) adsorption is strongly dependent on pH, but insensitive to temperature. The best pH for Pb(II) removal is in the range of 5.0–5.5 with more than 90 % of Pb(II) removed. The equilibrium time was found to be 60 min and the adsorption data followed the pseudo-second-order kinetics. Isotherm data followed Langmuir isotherm model with a maximum adsorption capacity of 162.33 mg/g. The adsorption was exothermic and spontaneous in nature. The Fourier transform infrared spectroscopy and scanning electron microscopy analysis suggested that CBAC possessed a porous structure and was rich in carboxyl and hydroxyl groups on its surface, which might play a major role in Pb(II) adsorption. These findings indicated that CBAC has great potential as an alternative adsorbent for Pb(II) removal. © 2016, The Author(s).
语种：
英文
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Batch study of uranium biosorption by Elodea canadensis biomass
作者：
Yi, Zheng-ji;Yao, Jun* ;Zhu, Mi-jia;Chen, Hui-lun;Wang, Fei;...
期刊：
Journal of Radioanalytical and Nuclear Chemistry ,2016年310(2):505-513 ISSN：0236-5731
通讯作者：
Yao, Jun
作者机构：
[Liu, Xing; Yi, Zheng-ji] Hengyang Normal Univ, Dept Chem & Mat Sci, Key Lab Funct Organometall Mat, Coll Hunan Prov, Hengyang 421008, Peoples R China.;[Yuan, Zhi-min; Yao, Jun; Wang, Fei; Yi, Zheng-ji; Zhu, Mi-jia; Chen, Hui-lun] Univ Sci & Technol Beijing, Sch Civil & Environm Engn, Xueyuan Rd 30, Beijing 100083, Peoples R China.;[Yuan, Zhi-min; Yao, Jun; Wang, Fei; Yi, Zheng-ji; Zhu, Mi-jia; Chen, Hui-lun] Univ Sci & Technol Beijing, Natl Int Cooperat Base Environm & Energy, Xueyuan Rd 30, Beijing 100083, Peoples R China.;[Yao, Jun] China Univ Geosci, Sch Water Resource & Environm Engn, Sino Hungarian Joint Lab Environm Sci & Hlth, Beijing 100083, Peoples R China.
通讯机构：
[Yao, Jun] U;[Yao, Jun] C;Univ Sci & Technol Beijing, Sch Civil & Environm Engn, Xueyuan Rd 30, Beijing 100083, Peoples R China.;Univ Sci & Technol Beijing, Natl Int Cooperat Base Environm & Energy, Xueyuan Rd 30, Beijing 100083, Peoples R China.;China Univ Geosci, Sch Water Resource & Environm Engn, Sino Hungarian Joint Lab Environm Sci & Hlth, Beijing 100083, Peoples R China.
关键词：
Uranium;Adsorption;Elodea canadensis;Isotherm;Kinetics
摘要：
The adsorption of U(VI) onto Elodea canadensis was studied via a batch equilibrium method. Kinetic investigation indicated that the U(VI) adsorption by E. canadensis reached an equilibrium in 120 min and followed pseudo-second-order kinetics. The solution pH was the most important parameter controlling adsorption of U(VI) and the optimum pH for U(VI) removal is 6.0. The U(VI) biosorption can be well described by Langmuir model. IR spectrum analysis revealed that –NH2, –OH, C=O and C–O could bind strongly with U(VI). XPS spectrum analysis implied that ion exchange and coordination mechanism could be involved in the U(VI) biosorption process. © 2016, Akadémiai Kiadó, Budapest, Hungary.
语种：
英文
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甲基丙烯酸甲酯本体浇铸聚合的实验影响因素的辨析
作者：
赖华;刘兴;谭雄文;李玉林
期刊：
山东化工 ,2016年45(16):184+186 ISSN：1008-021X
作者机构：
[赖华; 刘兴; 谭雄文; 李玉林] 衡阳师范学院化学与材料科学学院
关键词：
甲基丙烯酸甲酯;本体聚合;自动加速效应;浇铸成型
摘要：
甲基丙烯酸甲酯的本体浇铸聚合实验是高分子化学实验中重要的内容之一,让学生掌握本体聚合的理论知识和浇铸成型工艺。为了解决实验过程中常见的问题,本文对实验工艺原理和细节进行了辨析,可为甲基丙烯酸甲酯的本体浇铸聚合实验的顺利进行提供一些借鉴。
语种：
中文
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一种CoFe2O4NWs/RGO纳米复合材料及其制备得到的扑热息痛电化学传感器
发明/设计人：
李俊华;刘梦琴;张复兴;许志锋;邓培红;...
申请/专利权人：
衡阳师范学院
申请/专利号：
CN201610542075.1
申请时间：
2016-7-11
公开号：
CN106248766A
公开时间：
2016-12-21
主申请人地址：
421008 湖南省衡阳市雁峰区黄白路165号
摘要：
本发明涉及材料制备与电分析化学技术领域，具体涉及一种CoFe<sub>2</sub>O<sub>4</sub>NWs/RGO纳米复合材料及其制备得到的扑热息痛电化学传感器。所述的纳米复合材料包含如下步骤：S11.将氧化石墨烯(GO)先置于水中超声10～30min，然后加入柠檬酸继续超声10～60min，得氧化石墨烯(GO)分散液；S12.将FeCl<sub>3</sub>·6H<sub>2</sub>O和CoCl<sub>2</sub>·6H<sub>2</sub>O加入到氧化石墨烯(GO)分散液中，超声处理10～60min；S13.调节pH值至9.5～10.5，加入肼，搅拌30～120min，陈化18～48h；S14.离心、洗涤、干燥后得CoFe<sub>2</sub>O<sub>4</sub>NWs/RGO纳米复合材料。用该纳米复合材料制备得到的化学电极或电化学传感器在测定扑热息痛过程中具有稳定性好、检出限低、灵敏度和选择性高的优点。
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染料敏化可见光催化制氢研究进展
作者：
Liu Xing;Li Yue-Xiang* ;Peng Shea-Qin;Lai Hua
期刊：
物理化学学报 ,2015年31(4):612-626 ISSN：1000-6818
通讯作者：
Li Yue-Xiang
作者机构：
[Li Yue-Xiang; Liu Xing; Peng Shea-Qin] Nanchang Univ, Dept Chem, Nanchang 330031, Peoples R China.;[Liu Xing; Lai Hua] Hengyang Normal Univ, Dept Chem & Mat Sci, Hengyang 421008, Hunan, Peoples R China.
通讯机构：
[Li Yue-Xiang] N;Nanchang Univ, Dept Chem, Nanchang 330031, Peoples R China.
关键词：
光催化制氢;染料敏化;敏化剂;敏化基质;稳定性
摘要：
染料敏化是拓展宽禁带光催化剂激发波长范围、有效利用太阳光中可见光部分的重要手段. 本文介绍了染料敏化分解水制氢的基本原理, 综述了染料敏化剂、基质或载体、染料与基质的相互作用、产氢助催化剂以及电子牺牲剂的研究进展. 并对光敏化体系中电荷转移途径及稳定性问题进行了讨论.
语种：
中文
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茶氨酸配合物的合成及热化学研究
作者：
屈景年;聂雪;刘兴;邹亮
期刊：
衡阳师范学院学报 ,2015年36(06):6-9 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;[邹亮; 刘兴; 屈景年; 聂雪] 衡阳师范学院
关键词：
茶氨酸;过渡金属;配合物;标准生成焓
摘要：
该文合成了茶氨酸与金属M(Ⅱ)离子配合物.通过红外、化学分析确定配合物的化学组成为M[(C7H12N2O3)2] (M=Zn2-,Cu2-,Mn2).在HR-15型静态氧弹热量计上测定了配合物的燃烧热,根据热化学原理计算出配合物的标准生成焓,结果△fHmθZn[(C7H12N2O3)2]=-3175.53 kJ/mol,△fHmθCu[(C7H12N2O3)2]=-2490.13 kJ/mol,△fHmmθMn[(C7H12N2O3)2]=-2955.33 kJ/mol.
语种：
中文
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物理化学难教难学的应对方法
作者：
屈景年;李俊华;曾荣英;刘兴;聂雪
期刊：
衡阳师范学院学报 ,2014年(03):138-141 ISSN：1673-0313
作者机构：
衡阳师范学院化学与材料科学系,湖南衡阳,421008;[刘兴; 屈景年; 曾荣英; 聂雪; 李俊华] 衡阳师范学院
关键词：
物理化学;教与学;应对方法
摘要：
该文介绍了物理化学公式多、数学推导多、公式使用条件多、抽象概念多、计算多等难教难学问题的教与学应对方法。
语种：
中文
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地方师范院校物理化学课程建设发展与实践
作者：
李俊华;邓培红;曾荣英;毛芳芳;刘梦琴;...
期刊：
广东化工 ,2014年41(17):227-227 ISSN：1007-1865
作者机构：
衡阳师范学院化学与材料科学系,湖南衡阳,421008;荆州市实验中学,湖北荆州,434020;[易辉] 湖北省荆州市实验中学;[刘梦琴; 刘兴; 邓培红; 曾荣英; 李俊华; 毛芳芳] 衡阳师范学院
关键词：
物理化学;课程建设;教学;实践
摘要：
物理化学是化学及其相关专业学生的重要专业课或基础课,设置科学的物理化学课程体系对学科建设和学生培养起到至关重要的作用.文章从物理化学课程的作用、教学目标、教学方法和手段、教材建设和师资队伍建设等几个方面来总结地方师范院校在该门课程体系建设中的实践经验.
语种：
中文
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Research on the lower detection efficiency of the RAD7 for Rn-220 than for Rn-222
作者：
Tan, Y.* ;Xiao, D.;Tang, Q.;Shan, J.;Zhou, Q.;...
期刊：
Journal of Instrumentation ,2014年9(6):T06001 ISSN：1748-0221
通讯作者：
Tan, Y.
作者机构：
[Tan, Y.] Hengyang Normal Univ, Dept Phys & Elect, Hengyang 421008, Peoples R China.;[Xiao, D.; Tang, Q.; Zhou, Q.; Shan, J.; Liu, X.] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.;[Tan, Y.] Hengyang Normal Univ, Dept Phys & Elect, Henghua Rd 16, Hengyang 421008, Peoples R China.
通讯机构：
[Tan, Y.] H;Hengyang Normal Univ, Dept Phys & Elect, Henghua Rd 16, Hengyang 421008, Peoples R China.
关键词：
Data analysis;Detector modelling and simulations I (interaction of radiation with matter, interaction of photons with matter, interaction of hadrons with matter, etc)
摘要：
The measurement sensitivity of the RAD7 to the <sup>220</sup>Rn concentration in its internal cell is 30% less than the sensitivity to <sup>222</sup>Rn. This reduction in <sup>220</sup>Rn sensitivity relative to <sup>222</sup>Rn sensitivity has been attributed to the decay of <sup>216</sup>Po before it reaches the collection electrode. Analyzing the airflow patterns in the internal cell of RAD7, we propose that this may also be due to a ''short-circuit stream- highly concentrated <sup>220</sup>Rn injected into the internal cell and discharged from another port quickly. Since in the ''short-circuit stream'', the <sup>220</sup>Rn concentration of outflow is high, the <sup>220</sup>Rn concentration remaining in the internal cell must be low. Therefore, further improvement to the reliability and accuracy of <sup>220</sup>Rn measurements may be attained by the improvement of the measuring chamber geometric factor and the electric field. ©2014 IOP Publishing Ltd and Sissa Medialab srl.
语种：
英文
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Measuring radon exhalation rate by tracing the radon concentration of ventilation-type accumulation chamber
作者：
Tan, Yanliang* ;Xiao, Detao;Liu, Xiaosong;Tang, Quan
期刊：
Radiation Measurements ,2013年58:33-36 ISSN：1350-4487
通讯作者：
Tan, Yanliang
作者机构：
[Tan, Yanliang] Hengyang Normal Univ, Dept Phys & Elect, Hengyang 421008, Hunan, Peoples R China.;[Tan, Yanliang; Tang, Quan; Liu, Xiaosong; Xiao, Detao] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Hunan, Peoples R China.
通讯机构：
[Tan, Yanliang] H;Hengyang Normal Univ, Dept Phys & Elect, Hengyang 421008, Hunan, Peoples R China.
关键词：
Radon exhalation rate;Tracing the radon concentration;Ventilation-type accumulation chamber
摘要：
Radon exhalation rate is crucial in the estimation of radiation risk from various materials. RAD7 only focus on the count of the <sup>218</sup>Po in sniff mode, and is well suited to measure radon exhalation rates. This paper presents a fast method for measuring radon exhalation from medium surface with a ventilation-type accumulation chamber by the RAD7 while making the effects of leakage and back diffusion negligible. The radon exhalation rate can be obtained from the measured values before radioactive equilibrium between Radon and progeny occurs. This method is based on the principle for tracing radon concentration changes by deriving <sup>222</sup>Rn concentrations through <sup>218</sup>Po measurements. Several radon exhalation rate measurements of medium surface have been performed in the Radon Laboratory of the University of South China. The radon exhalation rates obtained by verification experiments are within the accepted values for the reference value. ©2013 Elsevier Ltd. All rights reserved.
语种：
英文
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Revision for measuring radon exhalation rate in open loop
作者：
Tan, Y.* ;Xiao, D.;Yuan, H.;Tang, Q.;Liu, X.
期刊：
Journal of Instrumentation ,2013年8(1):T01004 ISSN：1748-0221
通讯作者：
Tan, Y.
作者机构：
[Yuan, H.; Tan, Y.] Hengyang Normal Univ, Dept Phys & Elect, Hengyang City, Peoples R China.;[Xiao, D.; Tang, Q.; Liu, X.; Tan, Y.] Univ South China, Sch Nucl Sci & Technol, Hengyang City, Peoples R China.;[Tan, Y.] Hengyang Normal Univ, Dept Phys & Elect, Huangbai Rd, Hengyang City, Peoples R China.
通讯机构：
[Tan, Y.] H;Hengyang Normal Univ, Dept Phys & Elect, Huangbai Rd, Hengyang City, Peoples R China.
关键词：
Data acquisition concepts;Detector control systems (detector and experiment monitoring and slow-control systems, architecture, hardware, algorithms, databases);Models and simulations
摘要：
We propose a novel method for quickly measuring the radon exhalation rate in open loop. We first obtain the temporal variation of radon concentration in the internal cell of the RAD7 by analyzing the work principle of RAD7. We then obtain the temporal variation of radon concentration in the ventilation-type accumulation chamber when the effects of leakage and back diffusion are neglected. This method uses the measured value before the radon concentration in the ventilation-type accumulation chamber reaches a steady state. The diameter of the air input tube to the ventilation-type accumulation is large enough to keep the differential pressure in the accumulation chamber and outdoors negligible. Short cycle time and large flow rate will be appropriate for reducing measurement error. Several radon exhalation rate measurements of the medium surface have been performed in the Radon Laboratory of the University of South China. The radon exhalation rates obtained by verification experiments are in good agreement with the reference value. This method can be applied to develop and improve the instruments for measuring radon exhalation rate.
语种：
英文
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