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.
A b s t r a c tIn recently years one-dimensional (1D) nanostructures (wires, rods, tubes) have received much attention because of two-dimensional quantum confinement effect and their potential application in optoelectronics devices, such as photovoltaic solar cells or light emitting diodes. In this context one of the most important is zinc sulfide (ZnS) nanocrystal materials.ZnS is a large band gap II-VI group compound, which has two structural polymorphs: cubic zinc blende (3.72 eV) or hexagonal wurtzite (3.77 eV). Typically one-dimensional ZnS nanocrystals are characterized by wurtzite structure. ZnS has been targeted as an efficient semiconductor host to dope different transition metal ions such as Mn or Cu. ZnS doped with Mn is a luminescent material well known for its photoluminescence, electroluminescence and cathodoluminescence. In this article we present the microwave solvothermal synthesis of 1D ZnS:Mn nanocrystalline and their surface modification for polymer application.
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