Key Words:Ball milling;Dispersion (waves) - Dispersions - Efficiency - Fabrication - Milling (machining) - Nanoparticles - Photodegradation - Photoluminescence spectroscopy
Abstract:Ultrafine SnO<inf>2</inf> nanoparticles (NPs) with diameters of 2–4 nm were in situ fabricated on the surfaces of g-C<inf>3</inf>N<inf>4</inf> material through a hydrothermal method. Ball milling was then applied to treat the obtained g-C<inf>3</inf>N<inf>4</inf>/SnO<inf>2</inf> composites in order to improve the dispersion of SnO<inf>2</inf> NPs as well as to strengthen the bonding between SnO<inf>2</inf> and g-C<inf>3</inf>N<inf>4</inf>. The enhanced separation efficiency of photogenerated carriers, as indicated by the photoluminescence spectrum, was achieved after the ball milling treatment. Consequently, the ball milled g-C<inf>3</inf>N<inf>4</inf>/SnO<inf>2</inf> composite demonstrated significantly improved photocatalytic performance when degrading crystal violet, as evidenced by photodegradation efficiency enhancements of 5.06 and 3.23 times, respectively, when compared with bulk g-C<inf>3</inf>N<inf>4</inf> and the in situ synthesized g-C<inf>3</inf>N<inf>4</inf>/SnO<inf>2</inf> composite; these improvements were due to more useable and accessible electronic transport sites at the interfaces of the composites.<br/> © 2019 Elsevier B.V.
Volume:802
Issue:-
Translation or Not:no