Interface enriched highly interlaced layered MoS₂/NiS₂ nanocomposites for the photocatalytic degradation of rhodamine B dye

Abstract

The photocatalytic performance of MoS2/NiS2 nanocomposites was studied by the degradation of rhodamine B (RhB). Ni-4 sample shows higher photocatalytic activity with a maximum degradation of 90.61% under visible light irradiation for 32 min.

Experimental and Theoretical Investigation of Degradation Activity of Layered Two-Dimensional MoS2-ZnS Nanocomposites

“…7 During the synthesis process, we have employed an excess amount of thiourea, which produces more defects and distortions in the prepared MoS 2 . 31 These induced defects introduce a large number of edge and surface active-sites for the accumulation of charges, thereby introducing more degradation. From Table I, it is clear that the prepared MoS 2 -ZnS photocatalyst is a highly efficient material for photocatalytic dye degradation under Sunlight in a cost effective and environment friendly manner.…”

“…The closer contact existing between MoS 2 and ZnS produce an acceleration of electrons from MoS 2 to ZnS thereby suppressing of charge carrier recombination. 31 The water purity measurements for polluted water undergoing photocatalysis have also been carried out. The measurements were performed at CEPCI Laboratory and Research Institute, Kollam, Kerala, India where deionized water taken as the standard.…”

The application of photoelectrocatalysis in the degradation of rhodamine B in aqueous solutions: a review

“…For example, Harish et al reported the photocatalytic removal of rhodamine B dye using a binary composite of molybdenum disulfide and nickel disulfide (MoS 2 /NiS 2 ). 43 The nanocomposite consisting of several spherical particles with nanosheets was prepared through the hydrothermal method at a temperature of 180 °C for 24 h. When the composite material was applied for photocatalytic removal of rhodamine B under visible light illumination, the percentage degradation was found to be approximately 91%. In another study reported by Truong et al , nanocomposite of ZnO and CuO was successfully applied for the photocatalytic degradation of rhodamine B.…”

Preparation, Characterization and Photocatalytic Activity studies of Ag+, Cu2+ and Sn2+-doped Li2GeTeO6 under Visible Light Irradiation

“…Some of these • O2radicals are neutralized with protons to form HO2 • species, which react among themselves and form H2O2 and O2 species. Finally, the H2O2 decomposes to form • OH radicals [35]. Meanwhile, some of the holes in the VB could react with OH − or H2O to produce reactive • OH radicals.…”