Kinetics and Catalysis. Vol. 62, No. 1, Pages 74-81, 2021

Y. Wei^a, P. Xu^a, T. Wei^a, L. Chen^a, X. Wang^b, S. Li^a, T. Guo^a^, ^c^, *, and W. Li^a^, **

^aKey Laboratory of Biomass Chemical Engineering of Ministry of Education, Institute of Industrial Ecology and Environment, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, 310027 China

^bTechnology Innovation and Training Center, Polytechnic Institute, Zhejiang University, Hangzhou, 310015 China

^cCollege of Biological and Environmental Engineering, Zhejiang Shuren University, Hangzhou, 310015 China

Correspondence to: *e-mail: tguo@zju.edu.cn
Correspondence to: **e-mail: w_li@zju.edu.cn

Abstract—In the past two decades, photocatalysis has been widely studied due to its strong oxidizing power and moderate reaction conditions. In addition, photocatalysis with vacuum ultraviolet (VUV) irradiation has been considered a promising method for volatile organic compounds removal. However, residual O₃ can cause secondary pollution. In this study, manganese doped TiO₂ hollow spheres (MnO₂/TiO₂) were applied to degrade the residual ozone as well as to promote removal of toluene under VUV irradiation. Toluene was used to evaluate the catalytic ability of the photocatalysts under VUV irradiation. SEM, TEM, XRD, BET, XPS and UV–Vis diffuse reflectance spectroscopy were used to determine physical and chemical properties of the catalysts in order to correlate these properties to the observed activities. The results obtained showed that through the cooperation between Mn and Ti, MnO₂/TiO₂ hollow spheres demonstrated excellent photocatalytic activity. The mechanism of toluene removal under VUV process was also proposed.

Keywords: Mn doping, TiO₂ hollow spheres, VUV irradiation, toluene removal, ozone decomposition

Role of Manganese Doping TiO2 Hollow Spheres under Vacuum Ultraviolet Irradiation1

Role of Manganese Doping TiO₂ Hollow Spheres under Vacuum Ultraviolet Irradiation¹