Visible light-active sub-5 nm anatase TiO2 for photocatalytic organic pollutant degradation in water and air, and for bacterial disinfection

Xiaowen Wang; Huawen Hu; Zongyue Yang; Yeeyee Kong; Bin Fei; John Haozhong Xin

doi:10.1016/j.catcom.2015.09.014

Visible light-active sub-5 nm anatase TiO₂ for photocatalytic organic pollutant degradation in water and air, and for bacterial disinfection

Xiaowen Wang
, Huawen Hu
, Zongyue Yang
, Yeeyee Kong
, Bin Fei
, John Haozhong Xin

The Hong Kong Polytechnic University

Research output: Journal article publication › Journal article › Academic research › peer-review

35 Citations (Scopus)

Abstract

Visible-light-sensitive sub-5 nm anatase titanium dioxide (TiO₂) nanoparticles (NPs) were fabricated without any doping and calcination treatments. The energy band gap was effectively narrowed to ~ 2.98 eV. The surface and subsurface hydroxyl defects were ascertained as the origin for the band gap narrowing and for the efficient azo-based dye degradation in water and formaldehyde decomposition in air, as well as disinfection of Staphylococcus aureus bacteria, under visible light irradiation.

Original language	English
Pages (from-to)	81-85
Number of pages	5
Journal	Catalysis Communications
Volume	72
DOIs	https://doi.org/10.1016/j.catcom.2015.09.014
Publication status	Published - 5 Dec 2015

Keywords

Energy band gap
Hydroxyls
Sub-5 nm particle size
Surface and subsurface defects
Visible-light-responsive TiO<inf>2</inf>

ASJC Scopus subject areas

Catalysis
General Chemistry
Process Chemistry and Technology

More information

10.1016/j.catcom.2015.09.014

Cite this

@article{8981414162544fc38ea56216bcd76e61,

title = "Visible light-active sub-5 nm anatase TiO2 for photocatalytic organic pollutant degradation in water and air, and for bacterial disinfection",

abstract = "Visible-light-sensitive sub-5 nm anatase titanium dioxide (TiO2) nanoparticles (NPs) were fabricated without any doping and calcination treatments. The energy band gap was effectively narrowed to \textasciitilde{} 2.98 eV. The surface and subsurface hydroxyl defects were ascertained as the origin for the band gap narrowing and for the efficient azo-based dye degradation in water and formaldehyde decomposition in air, as well as disinfection of Staphylococcus aureus bacteria, under visible light irradiation.",

keywords = "Energy band gap, Hydroxyls, Sub-5 nm particle size, Surface and subsurface defects, Visible-light-responsive TiO\<inf\>2\</inf\>",

author = "Xiaowen Wang and Huawen Hu and Zongyue Yang and Yeeyee Kong and Bin Fei and Xin, \{John Haozhong\}",

year = "2015",

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language = "English",

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journal = "Catalysis Communications",

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T1 - Visible light-active sub-5 nm anatase TiO2 for photocatalytic organic pollutant degradation in water and air, and for bacterial disinfection

AU - Wang, Xiaowen

AU - Hu, Huawen

AU - Yang, Zongyue

AU - Kong, Yeeyee

AU - Fei, Bin

AU - Xin, John Haozhong

PY - 2015/12/5

Y1 - 2015/12/5

N2 - Visible-light-sensitive sub-5 nm anatase titanium dioxide (TiO2) nanoparticles (NPs) were fabricated without any doping and calcination treatments. The energy band gap was effectively narrowed to ~ 2.98 eV. The surface and subsurface hydroxyl defects were ascertained as the origin for the band gap narrowing and for the efficient azo-based dye degradation in water and formaldehyde decomposition in air, as well as disinfection of Staphylococcus aureus bacteria, under visible light irradiation.

AB - Visible-light-sensitive sub-5 nm anatase titanium dioxide (TiO2) nanoparticles (NPs) were fabricated without any doping and calcination treatments. The energy band gap was effectively narrowed to ~ 2.98 eV. The surface and subsurface hydroxyl defects were ascertained as the origin for the band gap narrowing and for the efficient azo-based dye degradation in water and formaldehyde decomposition in air, as well as disinfection of Staphylococcus aureus bacteria, under visible light irradiation.

KW - Energy band gap

KW - Hydroxyls

KW - Sub-5 nm particle size

KW - Surface and subsurface defects

KW - Visible-light-responsive TiO<inf>2</inf>

UR - https://www.scopus.com/pages/publications/84942520715

U2 - 10.1016/j.catcom.2015.09.014

DO - 10.1016/j.catcom.2015.09.014

M3 - Journal article

SN - 1566-7367

VL - 72

SP - 81

EP - 85

JO - Catalysis Communications

JF - Catalysis Communications

ER -