Low-temperature fabrication of brown TiO2 with enhanced photocatalytic activities under visible light

Mingzheng Wang; Biao Nie; Ka-Kit Yee; Haidong Bian; Chris Lee; Hung Kay Lee; Bo Zheng; Jian Lu; Linbao Luo; Yang Yang Li

doi:10.1039/c5cc09176d

Low-temperature fabrication of brown TiO2 with enhanced photocatalytic activities under visible light

Chem Commun (Camb). 2016 Feb 18;52(14):2988-91. doi: 10.1039/c5cc09176d.

Authors

Mingzheng Wang¹, Biao Nie², Ka-Kit Yee³, Haidong Bian⁴, Chris Lee², Hung Kay Lee⁵, Bo Zheng⁵, Jian Lu⁶, Linbao Luo⁷, Yang Yang Li⁸

Affiliations

¹ School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei, Anhui 230009, China and Center Of Super-Diamond and Advanced Films (COSDAF), Centre for Functional Photonics, and Department of Physics and Materials Science, City University of Hong Kong, Kowloon, Hong Kong, China.
² Center Of Super-Diamond and Advanced Films (COSDAF), Centre for Functional Photonics, and Department of Physics and Materials Science, City University of Hong Kong, Kowloon, Hong Kong, China.
³ Department of Biology and Chemistry, City University of Hong Kong, Kowloon, Hong Kong, China.
⁴ Center Of Super-Diamond and Advanced Films (COSDAF), Centre for Functional Photonics, and Department of Physics and Materials Science, City University of Hong Kong, Kowloon, Hong Kong, China and Department of Biology and Chemistry, City University of Hong Kong, Kowloon, Hong Kong, China.
⁵ Department of Chemistry, Chinese University of Hong Kong, Shatin, Hong Kong, China.
⁶ Department of Mechanical and Biomedical Engineering, and Center for Advanced Structural Materials, City University of Hong Kong, Kowloon, Hong Kong, China and Centre for Advanced Structural Materials, City University of Hong Kong Shenzhen Research Institute, 8 Yuexing 1st Road, Shenzhen Hi-Tech Industrial Park, Nanshan District, Shenzhen, China.
⁷ School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei, Anhui 230009, China.
⁸ Center Of Super-Diamond and Advanced Films (COSDAF), Centre for Functional Photonics, and Department of Physics and Materials Science, City University of Hong Kong, Kowloon, Hong Kong, China and City University of Hong Kong Shenzhen Research Institute, 8 Yuexing 1st Road, Shenzhen Hi-Tech Industrial Park, Nanshan District, Shenzhen, China. [email protected].

PMID: 26783565
DOI: 10.1039/c5cc09176d

Abstract

Here we report a facile one-step low-temperature solution-based method to treat native TiO2 with NaH. The NaH treatment effectively induces the Ti(iii) species and oxygen vacancies into the TiO2 host lattice, and enables the absorption edge of TiO2 to be conveniently adjusted from the UV region to the red end of the visible spectrum.

Publication types

Research Support, Non-U.S. Gov't