Facile synthesis and characterization of Chrysotile/SnO₂ nanocomposite for enhanced photocatalytic properties

Abstract

SnO2 nanocrystals grown on chrysotile surfaces could be facilely synthesized in large quantities through a direct precipitation process coupled with a calcination treatment. The as‐synthesized chrysotile/SnO2 nanocomposites showed a smaller band gap energy (2.88 ev) and relatively strong light absorption than the individually dispersed SnO2 nanocrystals. Due to the narrow gap and chemical passivation aroused by inherently negative charges on the surface of chrysotile, chrysotile/SnO2 nanocomposite was endowed with superior performance to chrysotile nanotube and SnO2 nanocrystals.

Mineral-Supported Photocatalysts: A Review of Materials, Mechanisms and Environmental Applications

“…Fourth, the perspective of future work and research directions are mentioned. Chrysotile/SnO 2 A direct precipitation process coupled with calcination treatment MB 250 W 450 nm mercury lamp 99 [26] Chrysotile @ZnO Precipitation MB 250 W 365 nm mercury lamp 99.50 [27] TiO 2 /micro-meso porous silica nanofibers Sol-adhesion RhB 25 W 254 nm ultraviolet light 95 [28] Exfoliated kaolinite nanolayers Intercalation and delamination RhB 150 W 254 nm mercury lamp over 95 [29] g-C 3 N 4 /TiO 2 /kaolinite A mild sol-gel method associated with chemical stripping and self-assembly CIP and S. aureus 500 W over 400 nm xenon lamp and 8 W fluorescent lamp 92 [5] N-doped TiO 2 /kaolinite A modified two-step sol-gel method CR 8 W lamp 99 [30] Ti-Fe kaolinite composite A simple precipitation method Cr(VI) 300 W over 420 nm dysprosium lamp 87 at PH = 3.0 [31] Ag/g-C 3 N 4 /kaolinite A two-step assembly strategy by employing in situ impregnation-calcination and photo-deposition process IBP 500 W over 400 nm xenon lamp 99.90 [32] Kaolinite/TiO 2 Sol-gel method MB 8 W 254 nm high-intensity UV-C radiation lamp 97 [33] Mica/TiO…”