Significant improvement in TiO 2 photocatalytic activity through controllable ZrO 2 deposition

ZrO was deposited on anatase TiO nanoparticles using 5-80 cycles of atomic layer deposition (ALD). The photocatalytic activity of all samples was evaluated based on the degradation of methylene blue (MB) solution under UV light. The TiO sample with 45 cycles of ZrO deposition (45c-Zr/TiO , 1.1 wt% Z...

Full description

Saved in:
Bibliographic Details
Published inRSC advances Vol. 8; no. 45; pp. 25829 - 25834
Main Authors Wang, Xiaofeng, Patel, Rajankumar L, Liang, Xinhua
Format Journal Article
LanguageEnglish
Published England 16.07.2018
Online AccessGet full text

Cover

More Information
Summary:ZrO was deposited on anatase TiO nanoparticles using 5-80 cycles of atomic layer deposition (ALD). The photocatalytic activity of all samples was evaluated based on the degradation of methylene blue (MB) solution under UV light. The TiO sample with 45 cycles of ZrO deposition (45c-Zr/TiO , 1.1 wt% ZrO ) was proved to be the most efficient catalyst with a degradation kinetic constant 10 times larger than that of the pure TiO sample. All samples were characterized using inductively coupled plasma atomic emission spectroscopy (ICP-AES), nitrogen adsorption-desorption, X-ray diffraction (XRD), transmission electron microscopy (TEM), UV-vis diffuse reflectance spectra analysis (UV-DRS), Raman and photoluminescence (PL) techniques. The high photocatalytic activity of 45c-Zr/TiO can be attributed to stronger adsorption in the ultraviolet region and a reduction in the recombination rate of electron/hole pairs.
ISSN:2046-2069
2046-2069
DOI:10.1039/C8RA03423K