Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/81077
Title: Enhance photoelectrochemical hydrogen-generation activity and stability of TiO2 nanorod arrays sensitized by PbS and CdS quantum dots under UV-visible light
Authors: Li, Lei
Dai, Haitao
Feng, Liefeng
Luo, Dan
Wang, Shuguo
Sun, Xiaowei
Keywords: Solar water splitting
Photoelectrochemical
Hydrogen generation
Issue Date: 2015
Source: Li, L., Dai, H., Feng, L., Luo, D., Wang, S., & Sun, X. (2015). Enhance photoelectrochemical hydrogen-generation activity and stability of TiO2 nanorod arrays sensitized by PbS and CdS quantum dots under UV-visible light. Nanoscale Research Letters, 10, 418-.
Series/Report no.: Nanoscale Research Letters
Abstract: We develop a composite photoanode by sensitizing TiO 2 nanorod arrays with PbS quantum dots (QDs) and CdS QDs. Benefitted from additional introduced PbS QDs and CdS QDs onto TiO 2 , the absorption of the composite photoanodes are broaden from UV to visible region. The experimental results showed that the PbS sandwiched between TiO 2 and CdS cannot only broad the absorption properties but also improve the stability. The stability can be explained by the hole facile transmission from PbS to CdS because of the valence band offsets between PbS and CdS which cause a small energy barrier and reduce the hole accumulation. The photocurrent density reached 1.35 mA cm −2 at 0.9716 V vs. RHE (0 V vs. Ag/AgCl, under 60 mW cm −2 illumination) for TiO 2 /PbS/CdS. The highest photocurrent of TiO 2 /PbS/CdS can be explained by the smallest of total resistance (138 Ω cm −2 ) compared to TiO 2 /CdS and pristine TiO 2 .
URI: https://hdl.handle.net/10356/81077
http://hdl.handle.net/10220/39112
ISSN: 1931-7573
DOI: 10.1186/s11671-015-1129-3
Schools: School of Electrical and Electronic Engineering 
Rights: © 2015 Li et al. Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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