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Journal of Nanostructures، جلد ۱۱، شماره ۴، صفحات ۷۹۰-۸۰۱
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عنوان انگلیسی CQDs/BiOCl Photocatalysts for the Efficient Treatment of Congo Red Aqueous Solution under Visible Light
چکیده انگلیسی مقاله The surface of BiOCl nanosheets, prepared by a simple hydrothermal method, was decorated by carbon quantum dots (CQDs) through a microwave-assisted procedure. According to Diffuse Reflectance spectroscopy (DRS), light-harvesting properties improved significantly, which was explainable based on the bandgap of the final photocatalyst, 1.15 eV. Elemental analysis results coupled with scanning electron microscopy (SEM) images proved changes in the morphological characteristics after adding CQDs to the support; While in powder X-ray diffraction (XRD) patterns, there was no indication of further crystalline phases on the surface of BiOCl nanosheets. The photocatalytic performance of the nanostructures was evaluated by Congo red dye removal under visible light at room temperature. The photoreaction obeyed first-order kinetics with the rate constant of 0.011 min-1. According to the experiments, photodegradation was noticeably affected by catalyst dosage, dye concentration, and pH, which were all optimized. The photocatalytic performance of the prepared nanostructure was mechanistically discussed, considering the desirable role of CQDs towards reaching superior photoactivity.
کلیدواژه‌های انگلیسی مقاله BiOCl, CQDs, Congo red, Photodegradation, Visible-light photocatalysis
نویسندگان مقاله Mohsen Padervand |
Dept. Chemistry, U Maragheh

Mojtaba Mazloum |
Department of Chemistry, Faculty of Science, University of Maragheh, Maragheh, Iran

Alireza Bargahi |
Department of Chemistry, Faculty of Science, University of Maragheh, Maragheh, Iran

Nasser Arsalani |
Research Laboratory of Polymer, Department of Organic and Biochemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran

نشانی اینترنتی https://jns.kashanu.ac.ir/article_111963_9a504857ff397ef5ba9aa5bb918fc43d.pdf
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