Solvothermal synthesis of hierarchical SnIn4S8 microspheres and their application in photocatalysis

Abstract

Hierarchical SnIn 4 S 8 microspheres were successfully fabricated via a solvothermal method without the assistance of any templates or surfactants. These microspheres were of a new tetragonal polymorph, distinct from the cubic counterpart popularly reported in the literature. Systematic characterization indicated that these microspheres exhibited a diameter of 2-4 lm and were assembled by numerous interconnected nanosheets of 40 nm thickness. The formation mechanism of hierarchical SnIn 4 S 8 microspheres was proposed by taking into account the influences of experimental conditions on the morphology and structure. Hierarchical microspheres possessed a large specific surface area of 197 m 2 g -1 and an accessible porous configuration, which gave rise to an excellent visible light-driven photocatalytic efficiency for methyl orange degradation in aqueous solutions, superior to that for the known N-doped TiO 2 photocatalyst.

Hexavalent chromium reduction and Rhodamine B degradation by visible-light-driven photocatalyst of stannum indium sulfide-samarium vanadate

“…In addition, the catalyst photoabsorption improves by increasing the light absorption, reflection, and scattering within such porous architectures. Furthermore, abundant pores in this structure provide numerous active sites for adsorbing more target species 19 . It seems that increasing SmVO 4 content in the SnIn 4 S 8 /SmVO 4 texture from an optimal ratio could shield the SnIn 4 S 8 surface, thereby impeding the light absorption by SnIn 4 S 8 and also blocking the active sites.…”

“…Stannum indium sulfide (SnIn 4 S 8 ) is a ternary chalcogenide semiconductor with potential uses in photocatalysis regarding its relatively narrow band gap, high stability, and strong visible-light absorption capacity. Generally, the short lifetime of photoinduced electron-hole (e --h + ) pairs dramatically restricts the performance of the simplex catalyst, where SnIn 4 S 8 is no exception 19,20 . Among the extensive efforts to overcome this dilemma and improve efficiency, constructing SnIn 4 S 8 -based heterostructures enhance its performance [21][22][23][24][25] .…”

Template-free synthesis of hierarchical γ-Al2O3 nanostructures and their adsorption affinity toward phenol and CO2

“…It is known that thiourea can be use as a complexant to form ZnS hollow spheres, and benets the oriented growth of the nal hierarchical structures assembled from building blocks. 32,38 The gradual decomposition rate of thiourea accelerates with increasing the reaction time and temperature, and the content of S 2À and its migration rate accordingly increase. This may accelerate the growth of nano-crystallites to a larger size at a higher rate, and results in morphology change of the nal product.…”

Preparation of SnIn4S8/TiO2 Nanotube Photoanode and Its Photocathodic Protection for Q235 Carbon Steel Under Visible Light

“…These materials have shown high photocatalytic activity to improve the photoconversion efficiency of quantum dot-sensitized solar cells. Stannum indium sulfide (SnIn 4 S 8 ) is a ternary chalcogenide semiconductor [ 40 ] that shows promising applications in heavy metal reduction and the photocatalytic degradation of organics and pharmaceutical wastewater due to its good chemical stability and strong absorption of visible light [ 41 , 42 ]. The physical and chemical ability of nanomaterials is mainly determined by their size, structure, and morphology.…”