Evaluation of transferable TiO2 nanotube membranes as electrocatalyst support for methanol photoelectrooxidation

被引：27
作者：
Diaz-Real, J. A. [1 ]
Dubed-Bandomo, G. C. [2 ]
Galindo-de-la-Rosa, J. [2 ]
Ortiz-Ortega, E. [2 ]
Ledesma-Garcia, J. [1 ]
Arriaga, L. G. [2 ]
机构：
[1] Univ Autonoma Queretaro, Fac Ingn, Div Invest & Posgrad, Ctr Univ Cerro Campanas, Queretaro 76010, Qro, Mexico
[2] Ctr Invest & Desarrollo Tecnol Electroquim, Pedro Escobedo 76703, Qro, Mexico
来源：
APPLIED CATALYSIS B-ENVIRONMENTAL | 2018年 / 222卷
关键词：
Transferable TiO2 nanotube membrane; Energy generation; Photo-electrocatalytic activity; Flexible photoelectrode; Methanol oxidation; ARRAYS; SUPERCAPACITORS; PERFORMANCE; OXIDATION; ELECTROOXIDATION; PHOTOCATALYSIS; SPECTROSCOPY; GENERATION; CATALYSTS; POWDERS;
D O I：
10.1016/j.apcatb.2017.09.019
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：
TiO2 nanotube membranes (TNM) were synthesized, separated (by electrochemical anodization) and modified with Pt-Ru electrocatalyst to assess their photoelectrocatalytic activity towards methanol (MeOH) oxidation. The feasibility of use of these composite materials was evaluated in different supports to observe the development of the electrochemical responses as a function of the nature of the electrical collecting substrate. The results suggested that, while the Pt-Ru decorated TMN present photoelectrocatalytic activity, the electrical contact in the back might be the limiting step in current collection. Such findings were demonstrated by performing scanning electrochemical microscopy SECM over the surface of the TNMs, where methanol was oxidized in the microelectrode tip of the SECM. This approach corroborated the suitability of TNMs to be modified with an electrocatalyst and its application in current technology such as microfluidic fuel cells.
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页码：18 / 25
页数：8
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