Photodegradation Process of Organic Dyes in the Presence of a Manganese-Doped Zinc Sulfide Nanowire Photocatalyst

Abstract

Zinc sulfide (ZnS) nanowires represent a promising candidate in many fields, including optoelectronics and photocatalysis because of their advantages such as excellent optical properties, chemical stability and an easy-scalable simple synthesis method. In this study, an energy-friendly microwave radiation process was used to develop the single-step, solvothermal process for the growth of manganese-doped zinc sulfide (ZnS) and undoped nanocrystals (NCs) in the forms of nanowires using two short amines as a stabilizer, e.g., ethylenediamine and hydrazine, respectively. ZnS nanowires doped with Mn atoms show absorbance in UV and in the visible region of the spectrum. The photocatalytic degradation of rhodamine B in the presence of Mn-doped and undoped ZnS nanocrystals illuminated with only a 6-W UV lamp has been comprehensively studied. The effect of Mn doping and the presence of a nanocrystal stabilizer on the degradation process was determined. It was found that the efficiency of a photocatalytic degradation process was strongly affected by both factors: the doping process of nanowires with Mn2+ atoms and the attachment of ligands to the nanocrystal surface.

Controllable Doping of Mn into Ni0.075‐xMnxAl0.025(OH)2(CO3)0.0125·yH2O for Efficient Adsorption of Fluoride Ions

“…[ 20 ] This may prevent Mn from being incorporated into the host layer as its concentration increases resulting in the formation of other peaks. [ 21 ]…”

“…[20] This may prevent Mn from being incorporated into the host layer as its concentration increases resulting in the formation of other peaks. [21] The a and c lattice parameters of the hexagonal structure of the synthesized LDH samples can be expressed as in the equation below: [22] 1…”

Photo‐excitable zinc sulfide nanoparticles: A theranostic nanotool for cancer management

“…The higher the bandgap energy, the more effective photocatalytic nanocrystallites. Therefore, among panels of quantum dots used for photodegradation of organic dyes, ZnS NPs are extensively studied (Kaur & Banur, 2017; Sunaina et al, 2021; Zaba et al, 2021).…”