Ultrasonic irradiation-assisted synthesis of Bi2S3 nanoparticles in aqueous ionic liquid at ambient condition

Abstract

In this work, an easy, fast and environmentally friendly method to obtain BiS nanostructures with sphere-like morphology is introduced. The promising material was successfully synthesized by a sonochemical route in 20% 1-ethyl-3-methylimidazolium ethyl sulfate [EMIM][EtSO] ionic liquid solution (IL). Morphological studies by electron microscopy (SEM and TEM) show that the use of IL in the synthesis of BiS favors the formation of nanocrystals non-agglomerated. Micro Raman and energy dispersive X-ray spectroscopy (EDXS) were used to determine the composition and purity of the synthesized material. X-ray powder diffraction (XRD) and selective area electron diffraction (SAED) revealed that ultrasonic radiation accelerated the crystallization of BiS into orthorhombic bismuthinite structure. The band gap calculated from the diffuse reflectance spectra (DRS) was found to be 1.5eV.

Probing the effect of lightly doped Iron in Bi2S3 nanostructures on Physiochemical properties and efficacy in anti-microbial activity

“…By considering the direct allowed transition the noticeable increment in band-gap was observed due to Iron doping. By extrapolating the linear region of the K-M function curve obtained band-gap value of pure Bi 2 S 3 is 1.550 eV which is 0.2 eV more than bulk Bi 2 S 3 which is the same result as obtained in [47]. The higher band gap than bulk material indicates the nano-phase formation of the materials.…”

Starch-Assisted Synthesis of Bi2S3 Nanoparticles for Enhanced Dielectric and Antibacterial Applications

“…These physical and chemical features are dependent on their shape, size, crystal phases, and most importantly the synthesis routes. Bi 2 S 3 nanoparticles have been made using a variety of techniques, including ultrasonic method, microwave-assisted route, photochemical synthesis method, thermal decomposition, and solvothermal/hydrothermal processes …”

“…These physical and chemical features are dependent on their shape, size, crystal phases, and most importantly the synthesis routes. Bi 2 S 3 nanoparticles have been made using a variety of techniques, including ultrasonic method, 6 microwave-assisted route, 7 photochemical synthesis method, 8 thermal decomposition, 9 and solvothermal/hydrothermal processes. 10 The nonaqueous techniques for Bi 2 S 3 NP synthesis have many disadvantages as they require complex instruments, costly solvents and templates, powerful surfactants, and high reaction temperatures.…”

Bi2S3 as a Promising ThermoelectricMaterial:Back and Forth

“…In recent years, many methods for the preparation of Bi 2 S 3 thermoelectric materials have emerged. At present, the common preparation methods of bismuth sulfide thermoelectric materials include solid phase methods, such as the mechanical alloy [68] , melting [69] and powder metallurgy methods [70] , and liquid phase methods, such as the ionic liquid [71] , reflux [72] , ultrasonic chemical [73] , microwave synthesis [74] and solvent heat methods [75] . These preparation methods and the morphology of the Bi 2 S 3 produced have their own characteristics.…”