Photo-catalytic degradation of methyl orange under visible light by MoS2 nanosheets produced by H2SiO3 exfoliation

A comparative study on the photocatalytic degradation of organic dyes using hybridized 1T/2H, 1T/3R and 2H MoS2 nano-sheets

“…25 As an efficient semiconducting nanomaterial, MoS 2 has been employed in environmental engineering, for treatment of organic pollutants via both, adsorption or photo-catalytic degradation. [33][34][35][36][37][38][39][40] MoS 2 is, however, a very delicate semiconducting material. The factors affecting its electronic structure and, hence, properties are quite various, including the molybdenum local coordination environment, the sulphur vacancies and surface defects, the crystal phase (1T, 2H or 3R) with different conductivities, as well as the degree of exfoliation, and the size and morphology of the nano-sheets.…”

“…This wide variety of factors affecting the molecular and electronic structure as well as active surface area has led to several contradicting reports about the adsorptive and photo-catalytic properties of the material, probably due to neglecting the effect of the actual phase of the material. [33][34][35][36][37][38][39][40] Fast and efficient adsorption has been reported for MoS 2 and several of its nanocomposites towards different organic dyes. [33][34][35][36][37] Liu and coworkers claimed no adsorptive capabilities for their samples and attributed the improved photo-catalytic activity of leafshaped MoS 2 to its morphology and its thinner layer structure with no account on the actual phase of the material.…”

“…[33][34][35][36][37] Liu and coworkers claimed no adsorptive capabilities for their samples and attributed the improved photo-catalytic activity of leafshaped MoS 2 to its morphology and its thinner layer structure with no account on the actual phase of the material. 39 Another study of the photo-degradation of Brilliant Green on bulk MoS 2 and WS 2 revealed 60% efficiency under visible light. 41 These reports highlight a crucial need for a careful structure (phase)property correlation for the material that takes into account all the different affecting factors.…”

Facile Synthesis of MoS2-C60Nanocomposites and Their Application to Catalytic Reduction and Photocatalytic Degradation

“…77-1716). 4 The peak at 14.22° with very low intensity represents the distinct (002) plane, which revealing that few layers might be contained in the crystal structure of the MoS 2 nanoparticles.…”

“…[1][2][3] The removal of pigments and synthetic dyes from industrial wastewater is challenging because of their solubility and chemical stability in aqueous solution. 4 Aromatic nitro compounds are one of the severe water pollutants, and so the development of effective decontamination technology is necessary to decrease their presence in the environment.…”