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V and N co-doped nanocrystal anatase TiO2 photocatalysts with enhanced photocatalytic activity under visible light irradiation

Paper ID Volume ID Publish Year Pages File Format Full-Text
52175 46865 2008 5 PDF Available
Title
V and N co-doped nanocrystal anatase TiO2 photocatalysts with enhanced photocatalytic activity under visible light irradiation
Abstract

Vanadium and nitrogen co-doped TiO2 nanocrystal (4–5 nm) photocatalysts were prepared through direct nitridation of the controlled hydrolysis product of Tetrabutyl titanate in V (IV) ions solution. The catalysts were characterized by XRD, BET surface area, XPS, and UV–vis diffuse reflectance spectra. The co-doped TiO2 nanocrystal has a narrower band gap of 2.76 eV than V-doped TiO2 (2.91 eV) and N-doped TiO2 (2.92 eV). The co-doped TiO2 photocatalysts show enhanced photocatalytic activity for the degradation of methylene blue under visible light irradiation (λ > 420 nm) compared with V-doped TiO2 and N-doped TiO2.

Keywords
Titanium dioxide; Co-doping; Vanadium and nitrogen; Visible light; Photocatalytic activity
First Page Preview
V and N co-doped nanocrystal anatase TiO2 photocatalysts with enhanced photocatalytic activity under visible light irradiation
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 9, Issue 6, 31 March 2008, Pages 1472–1476
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis