Optimization of surface charge transfer processes on rutile TiO2 nanorods photoanodes for water splitting

被引：47

作者：

Fabrega, C. ^{[1
]}

Andreu, T. ^{[1
]}

Tarancon, A. ^{[1
]}

Flox, C. ^{[1
]}

Morata, A. ^{[1
]}

Calvo-Barrio, L. ^{[2
]}

Morante, J. R. ^{[1
,3
]}

机构：

[1] Catalonia Inst Energy Res IREC, Adv Mat Energy Dept, St Adria De Besos 08930, Spain

[2] Univ Barcelona, CCiTUB, E-08028 Barcelona, Spain

[3] Univ Barcelona, Dept Elect, E-08028 Barcelona, Spain

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2013年 / 38卷 / 07期

关键词：

TiO2; Water splitting; Impedance; Nanorod; NANOWIRE ARRAYS; EFFICIENCY; ADSORPTION; TIO2(110); CHLORINE; GROWTH;

D O I：

10.1016/j.ijhydene.2012.12.077

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：

Electrochemical impedance spectroscopy (EIS) has been performed to investigate the photocatalytic properties of titanium dioxide nanorods in a photoelectrochemical water splitting system. A two-channel transmission line model has been proposed to interpret the frequency response of the main charge transfer processes that occur at nanorod/electrolyte and platinum/electrolyte interfaces. EIS was then employed to determine that the dramatic effect of the annealing treatment on the photocurrent density had its origin on a poor charge transfer at the titania/electrolyte interface. X-ray photoelectron spectroscopy and thermogravimetry measurements have been used to prove the relevance of the presence of chlorine coming from the synthesis process of TiO2 nanorods. Copyright (c) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：2979 / 2985

页数：7

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