Hydrothermal synthesis of SnS2 nanocrystals for photocatalytic degradation of 2,4,6-trichlorophenol under white LED light irradiation

Abstract

a b s t r ac tIn this study, SnS 2 nanocrystals with controlled morphology were successfully synthesized by a simple hydrothermal method using thiosemicarbazide both as a sulfur source and as a capping agent. The X-ray powder diffraction analysis confirmed the hexagonal phase of these as-prepared SnS 2 nanocrystals. Morphological features were studied by field-emission scanning electron microscopy, indicating that the as-prepared SnS 2 crystals were nanoparticles. The optical property was studied by ultravioletvisible diffused reflectance spectroscopy, indicating that the bandgap of SnS 2 samples is ~2.2 eV. Under white LED light irradiation (λ = 450 nm), the as-prepared SnS 2 nanocrystals exhibited a high photocatalytic activity for degrading 2,4,6-trichlorophenol solution. This work suggests that SnS 2 nanocrystal is a potential photocatalyst for detoxification.

Controlled Microwave-Assisted Synthesis of the 2D-BiOCl/2D-g-C3N4 Heterostructure for the Degradation of Amine-Based Pharmaceuticals under Solar Light Illumination

“…The field of semiconductor photocatalysis has emerged as an innovative technology for application in many important fields such as water purification, environmental remediation, hydrogen evolution, optical sensing devices, energy harvesting, and storing devices. − The idea of utilizing the abundantly available solar radiation for driving important chemical reactions has potential for large-scale industrial applications. Different types of semiconductor photocatalysts such as oxynitrides, sulphides, oxides, and metal-free semiconductors have been investigated. − …”