Enhanced solar absorption and photoelectrochemical properties of Al-reduced TiO/TiO/CdS heterojunction nanorods

Oxygen-deficient TiO 2 -based composites have attracted widespread attention due to their promoted light-harvesting capacity and energy conversion efficiency, beneficial for water splitting. Despite being a facile, secure-safe and undefiled route for preparing blackened TiO 2 , the Al-reduction meth...

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Veröffentlicht in:New journal of chemistry 2023-06, Vol.47 (22), p.1672-1678
Hauptverfasser: Li, Xiao, Hou, Jingshan, Wang, Jing, Huang, Yanwei, Zhao, Guoying, Zhang, Ganghua, Fang, Yongzheng
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container_end_page 1678
container_issue 22
container_start_page 1672
container_title New journal of chemistry
container_volume 47
creator Li, Xiao
Hou, Jingshan
Wang, Jing
Huang, Yanwei
Zhao, Guoying
Zhang, Ganghua
Fang, Yongzheng
description Oxygen-deficient TiO 2 -based composites have attracted widespread attention due to their promoted light-harvesting capacity and energy conversion efficiency, beneficial for water splitting. Despite being a facile, secure-safe and undefiled route for preparing blackened TiO 2 , the Al-reduction method has not been adopted for preparing TiO 2 /TiO 2− x /CdS composite films. Herein, TiO 2 /TiO 2− x /CdS composite nanorods were successfully fabricated by combining hydrothermal, Al-reduction and chemical bath deposition (CBD) techniques. Enhanced visible-light absorption and photoelectrochemical performances have been achieved using TiO 2 /TiO 2− x /CdS heterojunction nanorods. The photocurrent density of TiO 2 /TiO 2− x /CdS was obtained to be 7.75 mA cm −2 at 0 V vs. Ag/AgCl under AM 1.5 G illumination, which was 77.5-fold and 12.1-fold higher than those of bare TiO 2 and CdS, respectively. This work may offer new insights for realizing TiO 2 -based composites with improved solar absorption for photoelectrochemical applications. TiO 2 /TiO 2− x /CdS heterojunction nanorods with high PEC performance were successfully prepared by combining hydrothermal synthesis, Al-reduction and CBD techniques.
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Despite being a facile, secure-safe and undefiled route for preparing blackened TiO 2 , the Al-reduction method has not been adopted for preparing TiO 2 /TiO 2− x /CdS composite films. Herein, TiO 2 /TiO 2− x /CdS composite nanorods were successfully fabricated by combining hydrothermal, Al-reduction and chemical bath deposition (CBD) techniques. Enhanced visible-light absorption and photoelectrochemical performances have been achieved using TiO 2 /TiO 2− x /CdS heterojunction nanorods. The photocurrent density of TiO 2 /TiO 2− x /CdS was obtained to be 7.75 mA cm −2 at 0 V vs. Ag/AgCl under AM 1.5 G illumination, which was 77.5-fold and 12.1-fold higher than those of bare TiO 2 and CdS, respectively. This work may offer new insights for realizing TiO 2 -based composites with improved solar absorption for photoelectrochemical applications. 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title Enhanced solar absorption and photoelectrochemical properties of Al-reduced TiO/TiO/CdS heterojunction nanorods
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