期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 38, 期 7, 页码 2979-2985出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2012.12.077
关键词
TiO2; Water splitting; Impedance; Nanorod
资金
- European Regional Development Funds (ERDF, FEDER Programa Competitivitat de Catalunya)
- Ministerio de Economia y Competitividad-CONSOLIDER Ingenio project MULTICAT [CSD2009-00050]
- MINECO project NANO-EN-ESTO [MAT2010-21510]
- Generalitat de Catalunya-AGAUR project M2E [2009 SGR 440]
- Ramon y Cajal of the Spanish Ministerio de Economia y Competitividad
- Juan de la Cierva of the Spanish Ministerio de Economia y Competitividad
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.
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