Dendritic Ag@Pt core-shell catalyst modified with reduced graphene oxide and titanium dioxide: Fabrication, characterization, and its photo-electrocatalytic performance

被引：40
作者：
Wang, Caiqin [1 ]
Yue, Ruirui [1 ]
Wang, Huiwen [1 ,2 ]
Zou, Cuie [1 ]
Du, Jiao [1 ,2 ]
Jiang, Fengxing [1 ]
Du, Yukou [1 ]
Yang, Ping [1 ]
Wang, Chuanyi [2 ]
机构：
[1] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Peoples R China
[2] Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Urumqi 830011, Peoples R China
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2014年 / 39卷 / 11期
基金：
中国国家自然科学基金;
关键词：
Photo-electrocatalytic oxidation; Methanol oxidation; Ag@Pt bimetallic dendrite; Titanium dioxide; METHANOL OXIDATION; PHOTOCATALYTIC ACTIVITY; NANOPARTICLES; TIO2; ELECTROOXIDATION; POLYANILINE; ELECTRODE; ALCOHOL; RU;
D O I：
10.1016/j.ijhydene.2014.01.192
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：
A facile, multi-step method has been developed for the fabrication of three-dimensional (3D) RGO/Ag@Pt/TiO2/CF electrode, which is composed of dendritic Ag@Pt core shell catalyst, reduced graphene oxide (RGO), TiO2 spheres, and carbon fiber (CF). The Ag@Pt dendrite and TiO2 spheres supported on CF are coated with the gauze-like RGO sheets. After complexing with RGO, the light absorption of RGO/Ag@Pt/TiO2/CF is extended to longer wavelength region in comparison with pure TiO2. Moreover, the photo-electrocatalytic performance of RGO/Ag@Pt/TiO2/CF electrode toward methanol oxidation is thoroughly studied by evaluating these factors including electrochemical activity surface area, peak current density, the poisoning tolerance against COads and long-term stability. The results demonstrate that photo-electrocatalytic performance of RGO/Ag@Pt/TiO2/TiO2/CF electrode is enhanced under the UV irradiation in comparison with widely used Pt/C-JM electrode and its counterpart, Ag@Pt/TiO2/CF electrode. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：5764 / 5771
页数：8
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