AUTHOR=Yu Wen , Geng Nankun , Han Jianming , Yu Wenjun , Peng Yiting 

TITLE=Mesoporous crystalline Ti1-xSnxO2 (0 < x < 1) solid solution for a high-performance photocatalyst under visible light irradiation

JOURNAL=Frontiers in Chemistry

VOLUME=10

YEAR=2022

URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2022.1111435

DOI=10.3389/fchem.2022.1111435

ISSN=2296-2646

ABSTRACT=<p>We report a facile and effective inorganic polycondensation combined with aerosol-spray strategy towards high-performance photocatalyst by fabricating mesoporous Ti<sub>1-x</sub>Sn<sub>x</sub>O<sub>2</sub> (0 &lt; x &lt; 1) solid solution. Such Ti<sub>1-x</sub>Sn<sub>x</sub>O<sub>2</sub> nanocrystals with high Sn-doped contents are self-assembled into mesoporous spheres can effectively promote visible-light harvest and high quantum yield, leading a longer lifetime of the photoelectron-hole pairs and less recombination. Such the photocatalysts enhanced photocatalytic activity for the degradation of Rhodamine B (RhB). The representative Ti<sub>0.9</sub>Sn<sub>0.1</sub>O<sub>2</sub> and Ti<sub>0.8</sub>Sn<sub>0.2</sub>O<sub>2</sub> compounds reach an optimum degradation of ≈50% and 70%, respectively, after 120 min irradiation under visible irradiation. The mesoporous Ti<sub>1-x</sub>Sn<sub>x</sub>O<sub>2</sub> solid solution could inhibit the recombination of electron-hole pairs, which promote reaction thermodynamics and kinetics for RhB degradation.</p>