共 36 条
Platinum nanoparticles decorated dendrite-like gold nanostructure on glassy carbon electrodes for enhancing electrocatalysis performance to glucose oxidation
被引:53
作者:
Jia, Hongmei
[1
]
Chang, Gang
[1
]
Lei, Ming
[2
]
He, Hanping
[3
]
Liu, Xiong
[1
]
Shu, Honghui
[1
]
Xia, Tiantian
[1
]
Su, Jie
[1
]
He, Yunbin
[1
]
机构:
[1] Hubei Univ, Hubei Collaborat Innovat Ctr Adv Organ Chem Mat, Key Lab Green Preparat & Applicat Funct Mat, Minist Educ,Sch Mat Sci & Engn, 368 Youyi Ave, Wuhan 430062, Peoples R China
[2] Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China
[3] Hubei Univ, Coll Chem & Chem Engineer, Youyi Rd 368, Wuhan 430062, Hubei, Peoples R China
基金:
中国国家自然科学基金;
关键词:
Electrodeposition;
Dendrite-like gold nanostructures;
Platinum nanoparticles;
Glucose oxidation;
Nonenzymatic biosensor;
CUO NANOPARTICLES;
ELECTROCHEMICAL DEPOSITION;
NONENZYMATIC DETECTION;
GRAPHENE OXIDE;
SENSOR;
NANOTUBES;
BIOSENSOR;
IMMOBILIZATION;
NANOCLUSTERS;
COMPOSITES;
D O I:
10.1016/j.apsusc.2016.05.020
中图分类号:
O64 [物理化学(理论化学)、化学物理学];
学科分类号:
070304 ;
081704 ;
摘要:
Platinum nanoparticles decorated dendrite-like gold nanostructure, bimetal composite materials on glassy carbon electrode (Pt/DGNs/GC) for enhancing electrocatalysis to glucose oxidation was designed and successfully fabricated by a facile two-step deposition method without any templates, surfactants, or stabilizers. Dendrite-like gold nanostructure was firstly deposited on the GC electrode via the potentio-static method, and then platinum nanoparticles were decorated on the surface of gold substrate through chemical reduction deposition. X-ray diffraction (XRD), field-emission scanning electron microscope (FE-SEM), energy-dispersive X-ray spectroscopy (EDS) were applied to characterize the evolution of morphology and structure of the as-prepared Pt/DGNs/GC. Based on electrochemical measurements such as cyclic voltammetry, linear voltammetry and chronoamperometry, Pt/DGNs/GC exhibited significantly enhanced electrocatalytic performance to glucose oxidation compared those of pure dendrite-like Au nanoparticles in our previous report. Controlling chemical reduction deposition time, the amount of platinum nanoparticles on Au surface could be regulated, which further tuned electrocatalytic properties toward glucose oxidation. The dendrite-like gold surface partially covered by platinum nanoparticles dramatically enhanced the electrocatalytic performance for the oxidation of glucose because of excellent synergetic effects between gold and platinum species and the increased electrochemical active area from Pt nanoparticles loading. The non-enzymatic glucose biosensor based on Pt/DGNs/GC showed a rapid respond time (within 2s), wide linear range (from 0.1 mM to 14 mM), low detection limit (0.01 mM), supernal sensitivity (275.44 mu A cm(-2) mM(-1), R = 0.993), satisfactory reproducibility and good stability for glucose sensing. It was demonstrated that Pt/DGNs/GC could work as promising candidate for factual non-enzymatic glucose detection. (C) 2016 Elsevier B.V. All rights reserved.
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页码:58 / 64
页数:7
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