A review on the synthesis of the TiO۲-based photocatalyst for the environmental purification

TiO۲ as a photocatalyst has been widely investigated and applied in many fields such as fuel cells, sterilization, and environmental decontamination. Some efforts, such as operation pa-rameters, synthesis techniques, and improvements by doping have been made to improve its performance. To have a photocatalyst with high photocatalytic activity for environmental purification, the most important step is to know about the synthesis methods and the pa-rameters and conditions that lead to preparing a highly photocatalytic active photocatalyst. This article paves the way in selecting the best synthesizing technique. In this article, the most common synthesis techniques of TiO۲-based photocatalysts, including sol-gel, hydro-thermal, solvothermal, chemical vapor deposition, and physical vapor deposition have been reviewed. The most important results that have been achieved in the field of synthesis were collected.

Keywords:

TiO۲-based photocatalyst , Liquid-phase processing , Physical production techniques , Environmental application