Synthesis and Characterization of ZnS Quantum Dots on MnS2 Nanoparticles for Photo-assisted Electrochemical Degradation of Drug Compound
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Herein, ZnS quantum dots on MnS2 (ZnS/MnS2) nanoparticles. Was prepared via the facile and simple method. The ZnS/MnS2 nanocomposites were characterized into attained optical, morphological, structural, and surface attributes using different analytical routs. The average crystallite size of MnS2 and ZnS/MnS2 nanocomposites are 27.2 and 14.8 nm via calculated from Scherrer’s equation. Subsequent, the photo-catalytic and -electrochemical attributes of synthesized ZnS/MnS2 nanocomposites were as well as presented. The ZnS/MnS2 nanocomposites electrode represented a potential influence on the decomposition of acetaminophen, which was higher than that of MnS2 nanoparticles electrode. The high amount of ZnS QDs in MnS2 samples has a high decomposition efficiency of acetaminophen due to the conduction band position and valence band position of ZnS QDs are higher than that of MnS2. Influencing major factors on the decomposition of acetaminophen were evaluated and the removal of acetaminophen was performed at pH:3, 60 mA cm− 2, and 0.1 M NaCl concentration. The prepared electrode represented great stability and indicated the highest possible for treatment technology of wastewater. Comparison of the performances of the photo-assisted electrochemical (PAEC) electrochemical (EC) and photo-catalytic indicated that the hybrid process (PAEC) has high efficiency for acetaminophen degradation.
KeywordsZnS Quantum dots Photo-catalysis Photo-electrochemical
The authors are grateful for the support of this research by the Islamic Azad University of Central Tehran.