Mo‐doped TiO 2 using plasma in contact with liquids: advantages and limitations
Author(s) -
Khlyustova Anna,
Sirotkin Nikolay,
Kraev Anton,
Kusova Tatiana,
Titov Valery,
Agafonov Alexander
Publication year - 2021
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.6628
Subject(s) - doping , sorption , materials science , dopant , photocatalysis , sorbent , glow discharge , plasma , chemical engineering , molybdenum , optoelectronics , organic chemistry , chemistry , catalysis , metallurgy , adsorption , physics , quantum mechanics , engineering
Abstract BACKGROUND The presented work focuses on the comparison of sorption and photocatalytic properties of TiO 2 doped with molybdenum using different methods of Mo loading. The structural and photocatalytic characteristics of doped TiO 2 are determined by the method of synthesis and loading of the dopant element. As an alternative to simple wet chemical loading, three types of low‐temperature plasma in contact with liquid are considered: atmospheric pressure glow discharge, underwater diaphragm discharge, and underwater plasma. RESULTS The results show that the introduction of Mo, regardless of the doping method, leads to a decrease in the band gap. The surface characteristics of powders depend on the doping method. The sorption capacity increases two to three times, and the efficiency of photodestruction increases from 52% to 96% when exposed to visible light for 60 min. CONCLUSIONS A comparison of the sorption and photocatalytic activity of Mo‐doped TiO 2 showed the inexpediency of using a glow discharge for doping. The synthesis of a highly efficient sorbent or photocatalyst can be determined by the type of underwater plasma. © 2020 Society of Chemical Industry