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Graphene-supported PtPd Bimetallic Gathered Nanocrystals for Non-enzymatic Sensing of Oxalic Acid.
Anal Sci. 2015; 31(7):617-21.AS

Abstract

A novel non-enzymatic oxalic acid (OA) sensor was developed using a nanocrystal PtPd loaded reduced graphene nanosheets (PtPdNCs/RGO)-modified electrode. PtPdNCs/RGO were successfully achieved by a facile, one-step and template-free method, in which PtPd nanoparticles with 100 nm-scale were assembled from polyhedral PtPd nanocrystals of various shapes and dispersed on the graphene nanosheets. Resulting PtPdNCs/RGO were characterized and used for PtPdNCs/RGO-modified electrodes. Electrochemical oxidation of OA on the modified electrode was investigated by cyclic voltammetry and differential pulse voltammetry (DPV). Well-defined peaks of OA oxidation could be obtained using an electrode that indicated its high electrochemical activity. The concentration of OA and the current responses could be obtained in the ranges of 0.5 - 10 and 10 - 35 mM with correlation coefficients of 0.9994 and 0.9952; the detection limit (S/N = 3) was found to be 0.05 mM. The modified electrode presented good characteristics in terms of both stability and reproducibility, promising its applicability in practical analysis.

Authors+Show Affiliations

Department of Chemistry and the MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, College of Chemistry and Chemical Engineering, Xiamen University.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

26165283

Citation

Cai, Zhixiong, et al. "Graphene-supported PtPd Bimetallic Gathered Nanocrystals for Non-enzymatic Sensing of Oxalic Acid." Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry, vol. 31, no. 7, 2015, pp. 617-21.
Cai Z, Zhao L, Zhao T, et al. Graphene-supported PtPd Bimetallic Gathered Nanocrystals for Non-enzymatic Sensing of Oxalic Acid. Anal Sci. 2015;31(7):617-21.
Cai, Z., Zhao, L., Zhao, T., Wang, Y., & Chen, X. (2015). Graphene-supported PtPd Bimetallic Gathered Nanocrystals for Non-enzymatic Sensing of Oxalic Acid. Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry, 31(7), 617-21. https://doi.org/10.2116/analsci.31.617
Cai Z, et al. Graphene-supported PtPd Bimetallic Gathered Nanocrystals for Non-enzymatic Sensing of Oxalic Acid. Anal Sci. 2015;31(7):617-21. PubMed PMID: 26165283.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Graphene-supported PtPd Bimetallic Gathered Nanocrystals for Non-enzymatic Sensing of Oxalic Acid. AU - Cai,Zhixiong, AU - Zhao,Li, AU - Zhao,Tingting, AU - Wang,Yiru, AU - Chen,Xi, PY - 2015/7/14/entrez PY - 2015/7/15/pubmed PY - 2016/4/7/medline SP - 617 EP - 21 JF - Analytical sciences : the international journal of the Japan Society for Analytical Chemistry JO - Anal Sci VL - 31 IS - 7 N2 - A novel non-enzymatic oxalic acid (OA) sensor was developed using a nanocrystal PtPd loaded reduced graphene nanosheets (PtPdNCs/RGO)-modified electrode. PtPdNCs/RGO were successfully achieved by a facile, one-step and template-free method, in which PtPd nanoparticles with 100 nm-scale were assembled from polyhedral PtPd nanocrystals of various shapes and dispersed on the graphene nanosheets. Resulting PtPdNCs/RGO were characterized and used for PtPdNCs/RGO-modified electrodes. Electrochemical oxidation of OA on the modified electrode was investigated by cyclic voltammetry and differential pulse voltammetry (DPV). Well-defined peaks of OA oxidation could be obtained using an electrode that indicated its high electrochemical activity. The concentration of OA and the current responses could be obtained in the ranges of 0.5 - 10 and 10 - 35 mM with correlation coefficients of 0.9994 and 0.9952; the detection limit (S/N = 3) was found to be 0.05 mM. The modified electrode presented good characteristics in terms of both stability and reproducibility, promising its applicability in practical analysis. SN - 1348-2246 UR - https://www.unboundmedicine.com/medline/citation/26165283/Graphene_supported_PtPd_Bimetallic_Gathered_Nanocrystals_for_Non_enzymatic_Sensing_of_Oxalic_Acid_ L2 - https://dx.doi.org/10.2116/analsci.31.617 DB - PRIME DP - Unbound Medicine ER -