Morphological studies and photocatalytic degradation of methylene blue by zinc sulfide nanoparticles

Abstract

"We report the preparation, morphological and photocatalytic studies of zinc sulfide nanoparticles from zinc(II) dithiocarbamate precursors. Powder X-ray diffraction patterns were index to the wurtzite crystalline phase of zinc sulfide while transmission electron microscopy micrographs revealed spherically shaped particles with sizes in the range 2.8 to 5.2 nm. The ZnS nanoparticles were used as photocatalysts for the degradation of methylene blue with degradation efficiency of 71.41% for ZnS1 and 85.95% for ZnS2 nanoparticles at pH 9.43. The effect of catalyst concentration, pH, radical scavengers, and hole (h+ ) scavengers on the photodegradation of methylene blue dye were evaluated."

Fabrication of Carbon‐Based ZnBi2S4 and ZnBi2Se4 Nanocomposites for Photocatalytic and Electrochemical Applications

“…Ajibade et al [56] . reported the degradation of methylene blue by ZnS1 and ZnS2 with a degradation efficiency of 55.97 % and 65.92 % in 180 min, respectively.…”

“…It reveals a supercapacitor's characteristics. [56] ZnS2 MB 65.92 180 [56] ZnS MB 90 60 [57] Pure, and Sn/Bi 2 S 3 MB 83-94 150 [58] PEI/Bi 2 Se 3 MB 95 240 [59] Bi 2 Se 3 MB 100 90 [60] ZnS MO 73 75 [61] ZnS MO 98 10 [62] ZnSe MO 80 120 [63] ZnSe MO 96 540 [64] Bi 2 Se 3 MO 20.54 150 [65] NaBH 4 spiked ZnS RhB 93.60 210 [66] PEI/Bi 2 Se 3 RhB 90 180 [59] Bi 2 Se 3 RhB 75.35 120 [65] ZnBi Until now, many researchers have degraded the dyes using graphene and carbon nitride, which are metal-doped Bi 2 S 3 and metal-doped Bi 2 Se 3 . In the present work, the design and fabrication of carbon-based Zinc-Bismuth-Chalcogenide nanocomposites were done.…”

“…Ajibade et al [56] reported the degradation of methylene blue by ZnS1 and ZnS2 with a degradation efficiency of 55.97 % and 65.92 % in 180 min, respectively. Abed et al [57] showed that the efficiency of ZnS was observed as a 90 % degradation result at 60 min.…”

MoSe2 in flower spheres provides abundant active sites for TiO2 photocatalytic degradation of RhB

“…In recent years, with the development of industry and technology, China's national economy has leaped forward in development, but at the same time, China's ecological environment has been seriously damaged because of various industrial pollution [1][2]. Among all kinds of environmental pollution, water pollution and air pollution, which have attracted much attention, have caused serious threats to people's lives and health to a large extent [3][4][5].…”