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Facile synthesis of Pd−Cu@Cu2O/N-RGO hybrid and its application for electrochemical detection of tryptophan

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成果类型:
期刊论文
作者:
Li, Junhua;Jiang, Jianbo;Xu, Zhifeng;Liu, Mengqin;Tang, Siping;Yang, Chunming;Qian, Dong
通讯作者:
Qian, D
作者机构:
[Tang, Siping; Liu, Mengqin; Li, Junhua; Xu, Zhifeng] Key Laboratory of Functional Metal-Organic Compounds of Hunan Province, Hengyang Normal University, Hengyang, 421008, China
[Qian, Dong; Jiang, Jianbo; Li, Junhua] College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China
[Li, Junhua] Hunan Province Universities Key Laboratory of Functional Organometallic Materials, College of Chemistry and Material Science, Hengyang Normal University, Hengyang, 421008, China
[Jiang, Jianbo] College of Chemistry and Chemical Engineering, Jishou University, Jishou, 416000, China
[Yang, Chunming] College of Chemistry and Chemical Engineering, Hunan Normal University, Changsha, 410081, China
通讯机构:
[Qian, Dong] Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.
语种:
英文
关键词:
Electroactive surface areas - Electrocatalytic performance - ELectrochemical detection - Hybridization - Hydrothermal treatments - Reduced graphene oxides - Tryptophan - Various technologies
期刊:
Electrochimica Acta
ISSN:
0013-4686
年:
2018
卷:
260
页码:
526-535
文献类别:
WOS:Article;EI:Journal article (JA)
所属学科:
ESI学科类别:化学;WOS学科类别:Electrochemistry
入藏号:
WOS:000419831600059;EI:20175204576390
基金类别:
National Natural Science Foundation of China [21505035, 21171174, 21472038]; Provincial Natural Science Foundation of Hunan [2016JJ3028, 09JJ3024]; Scientific Research Projects of Education Department of Hunan Province [16A029, 15A027]; Hengyang Normal University [16D04]; Aid Programs for Innovative Team and Key Discipline in Education Department of Hunan Province [2014207]
机构署名:
本校为第一机构
院系归属:
化学与材料科学学院
摘要:
In this work, the N doping together with Pd&minus;Cu@Cu<inf>2</inf>O hybridization for graphene oxide was achieved by a combined process of hydrothermal treatment and chemical reduction, based on which a novel Pd&minus;Cu@Cu<inf>2</inf>O cubes decorated N-doped reduced graphene oxide (Pd&minus;Cu@Cu<inf>2</inf>O/N-RGO) hybrid was obtained. The synthesized Pd&minus;Cu@Cu<inf>2</inf>O/N-RGO was detailedly characterized by various technologies. The results show that the low Pd loading Cu@Cu<inf>2</inf>O cubes with the sizes of 300&ndash;500 nm are well dispersed on N-RGO sheets, thereby avoiding the serious aggregation and maintaining a large electroactive surface area of the attained hybrid. Benefiting from the synergistic effect of the properties of Pd&minus;Cu@Cu<inf>2</inf>O particles and N-RGO sheets, the Pd&minus;Cu@Cu<inf>2</inf>O/N-RGO modified electrode exhibits remarkable electrocatalytic performance on the oxidation of tryptophan with the enhanced oxidation response and the lowered oxidation overpotential. Under the optimal conditions for the electrochemical detection of tryptophan, the constructed sensor displays a wide linear range (0.01&ndash;40.0 &mu;M) and a low detection limit (1.9 nM), outperforming most of the reported hybrid-based sensors. The proposed sensor also features good selectivity, stability and reproducibility, which has been successfully applied for the detection of tryptophan in the urine and milk samples with satisfactory recoveries. All these results suggest that the Pd&minus;Cu@Cu<inf>2</inf>O/N-RGO hybrid could be a promising and convenient material for the fabrication of high-performance electrochemical sensors.<br/> &copy;2017 Elsevier Ltd
参考文献:
Ashassi-Sorkhabi H, 2016, J TAIWAN INST CHEM E, V69, P118, DOI 10.1016/j.jtice.2016.08.026
Bard A.J., 2001, ELECTROCHEMICAL METH
Cincotto FH, 2017, SENSOR ACTUAT B-CHEM, V239, P488, DOI 10.1016/j.snb.2016.08.063
Dario MF, 2017, J CHROMATOGR B, V1065, P59, DOI 10.1016/j.jchromb.2017.09.020
del Pozo M, 2011, J MATER CHEM, V21, P13657, DOI 10.1039/c1jm12063h

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