Sub-10 nm rutile titanium dioxide nanoparticles for efficient visible-light-driven photocatalytic hydrogen production

Li, Landong; Yan, Junqing; Wang, Tuo; Zhao, Zhi‐Jian; Zhang, Jian; Gong, Jinlong; Guan, Naijia

doi:10.1038/ncomms6881

articleNature CommunicationsJan 6, 2015GOLD OA

Sub-10 nm rutile titanium dioxide nanoparticles for efficient visible-light-driven photocatalytic hydrogen production

LLLandong Li JYJunqing Yan TWTuo Wang ZZZhi‐Jian Zhao JZJian Zhang

Nankai University · Collaborative Innovation Center of Chemical Science and Engineering Tianjin · +3 more institutions

PubMed

Indexed incrossrefdoajpubmed

Abstract

Titanium dioxide is a promising photocatalyst for water splitting, but it suffers from low visible light activity due to its wide band gap. Doping can narrow the band gap of titanium dioxide; however, new charge-carrier recombination centres may be introduced. Here we report the design of sub-10 nm rutile titanium dioxide nanoparticles, with an increased amount of surface/sub-surface defects to overcome the negative effects from bulk defects. Abundant defects can not only shift the top of the valence band of rutile titanium dioxide upwards for band-gap narrowing but also promote charge-carrier separation. The role of titanium(III) is to enhance, rather than initiate, the visible-light-driven water splitting.…

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844

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Topics & keywords

Topics

Keywords

Rutile
Titanium dioxide
Photocatalysis
Materials science
Water splitting
Visible spectrum
Charge carrier
Nanoparticle

UN Sustainable Development Goals

Clean water and sanitation

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