The effect of microwave operation parameters on the electrochemical performance of Pt/C catalysts

被引：36
作者：
Song, Shuqin [2 ]
Liu, Jinchao [2 ]
Shi, Jianying [3 ]
Liu, Hong [3 ]
Maragou, Vasiliki [1 ]
Wang, Yi [3 ]
Tsiakaras, Panagiotis [1 ]
机构：
[1] Univ Thessaly, Dept Mech Engn, Sch Engn, Pedion Areas 38334, Greece
[2] Sun Yat Sen Univ, State Key Lab Optoelect Mat & Technol, Sch Phys & Engn, Guangzhou 510275, Guangdong, Peoples R China
[3] Sun Yat Sen Univ, Sch Chem & Chem Engn, Guangzhou 510275, Guangdong, Peoples R China
来源：
APPLIED CATALYSIS B-ENVIRONMENTAL | 2011年 / 103卷 / 3-4期
关键词：
Microwave heating; Continuous microwave; Pulse microwave; Carbon supported Pt catalyst; Alcohol electro-oxidation; HEATED POLYOL SYNTHESIS; OXYGEN REDUCTION; CARBON NANOTUBES; CATHODE CATALYST; ANODE CATALYSTS; NANOPARTICLES; ETHANOL; ELECTROCATALYSTS; PLATINUM;
D O I：
10.1016/j.apcatb.2011.01.012
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：
In the present work, the effect of the microwave operation parameters on the heating behaviour of ethylene glycol (EG) solution and thereafter on the physicochemical and electrochemical properties of Pt/C catalysts have been investigated. It was Found that the heating efficiency of the pulse mode (PM) of microwave irradiation is higher than that of the continuous mode (CM). The addition of suitable amount of carbon black into EG system can accelerate the heating process of EG solution, while excessive carbon black decreases the heating rate of EG solution. Moreover, the irradiation time and operation mode can significantly affect the performance of Pt/C catalysts. It was found that Pt/C catalyst prepared in the pulse microwave mode of 10s-ON/10s-OFF for 5 pulses, showed the best electrocatalytic activity towards methanol and ethanol electrooxidation with an electrochemical surface area of 111.7 m(2) g(-1) and a peak current density of methanol and ethanol electro-oxidation of 20.9 mA cm(-2) and 26.7 mA cm(-2), respectively. (c) 2011 Elsevier B.V. All rights reserved.
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页码：287 / 293
页数：7
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