Open AccessProgress on the nanoscale spherical TiO 2 photocatalysts: Mechanisms, synthesis and degradation applications
Author(s) -
Lian Peng,
Qin Aimiao,
Liao Lei,
Zhang Kaiyou
Publication year - 2021
Publication title -
nano select
Language(s) - English
Resource type - Journals
ISSN - 2688-4011
DOI - 10.1002/nano.202000091
Subject(s) - nanoscopic scale , photocatalysis , materials science , nanotechnology , titanium dioxide , degradation (telecommunications) , doping , nanoparticle , chemical engineering , catalysis , chemistry , composite material , organic chemistry , computer science , telecommunications , optoelectronics , engineering
Titanium dioxide (TiO 2 ) has the advantages of strong photocatalytic activity, non‐toxicity, and low cost, and so on. It has always occupied a dominant position in many photocatalytic materials, especially nanoscale spherical TiO 2 has the characteristics of high specific surface area and pore‐volume, and so on. Therefore, Degussa P25, as a typical representative of the nanoscale spherical structure, is currently the only material produced on a large scale. According to the structure, nanoscale spherical TiO 2 can be divided into three types: solid, core‐shell, and hollow spheres. However, there is still a lack of the latest review on the synthetic doping and application of nanoscale spherical TiO 2 . Therefore, we first describe the degradation mechanism of nanoscale spherical TiO 2 and summarize the latest progress of its synthesis strategy in this review, including doping and other modification techniques, and finally introduce the application of nanoscale spherical TiO 2 photocatalytic degradation of volatile organic compounds, dye wastewater, antibiotics, pesticides, and oily wastewater. Through this review, it is helpful for researchers to further understand the synthesis and application of nanoscale spherical TiO 2 , hoping to continuously improve the disadvantages and photocatalytic activity of nanoscale spherical TiO 2 , and promote the widespread application of nanoscale spherical TiO 2 on an industrial scale.