CdS-sensitized 1-D single-crystalline anatase TiO2 nanowire arrays for photoelectrochemical hydrogen production
- Authors
- Kim, DH (Kim, Dong Hoe); Han, HS (Han, Hyun Soo); Cho, IS (Cho, In Sun); Seong, WM (Seong, Won Mo); Park, IJ (Park, Ik Jae); Park, JH (Park, Jong Hoon); Shin, S (Shin, Sun); Gyeong Do Park; Park, S (Park, Sangbaek); Lee, S (Lee, Sangwook); Hong, KS (Hong, Kug Sun)...Mor
- Issue Date
- Jan-2015
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Anatase TiO2; Single crystalline anatase TiO2; TiO2 nanowire; CdS; Photoelectrochemical cell; Hydrogen production
- Citation
- INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.40, no.1, pp 863 - 869
- Pages
- 7
- Journal Title
- INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
- Volume
- 40
- Number
- 1
- Start Page
- 863
- End Page
- 869
- URI
- https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/147209
- DOI
- 10.1016/j.ijhydene.2014.09.174
- ISSN
- 0360-3199
1879-3487
- Abstract
- We report photoelectrochemical (PEC) properties of single crystalline anatase TiO2 nanowire (NW) arrays which are sensitized with CdS for visible light activity. Photocurrent varies largely with increasing the growth time (from 2 to 24 h) of the TiO2 NWs and also increasing the deposition cycles (from 7 to 13 cycles) of CdS, which are attributed to changes in morphology of the TiO2 NWs and CdS layer. TiO2 NW array grown for 3 h with 9-cycles of CdS deposition exhibits the maximum photocurrent of 3.6 mA/cm(2) at 1.23 V vs. reversible hydrogen electrode (RHE) under the 1 SUN solar light. Morphological analysis combined with photoresponse analysis show that the 3 h-grown TiO2 NW array has the most suitable structure for PEC electrode because of large surface area for light absorption and chemical reaction, and that the 9-cycles deposited CdS layer provides the optimum light absorption and electron lifetime. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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