Photocatalytic heterojunction of CeCoO۳/CdS for conversion of organicdyes

  • سال انتشار: 1402
  • محل انتشار: بیست و دومین کنفرانس شیمی معدنی ایران
  • کد COI اختصاصی: IICC22_232
  • زبان مقاله: انگلیسی
  • تعداد مشاهده: 113
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نویسندگان

Farshad Marefatyan

Department of Chemistry, Faculty of Science, University of Kurdistan, Sanandaj, Iran

Mahdieh Ghobadifard

Department of Chemistry, Faculty of Science, University of Kurdistan, Sanandaj, Iran

Sajjad Mohebbi

Department of Chemistry, Faculty of Science, University of Kurdistan, Sanandaj, Iran

چکیده

Recently, oxide perovskites with the general formula ABO۳ have attracted the attention ofmany scientists [۱]. Cerium cobalt oxide perovskite, represented by CeCoO۳, exhibits promisingcapabilities as a nanophotocatalyst in the conversion of organic dyes [۱]. Additionally, Cobalt(II)sulfide (CdS), a semiconductor, shows high performance in light absorption due to its suitableband gap energy [۲,۳]. The CeCoO۳/CdS photocatalysis was synthesized using the hydrothermalmethod. The prepared heterojunction structure was characterized using various techniques andapplied to the decolorization of methylene blue under visible light irradiation. FT-IR, FE-SEM,EDS, PL, and DRS analyses were employed to identify the properties of CeCoO۳/CdSphotocatalysis. The FE-SEM images demonstrated the successful deposition of CdS on the surfaceof CeCoO۳ perovskite. The effect of catalyst amount, temperature, pH, and electron acceptor wasinvestigated. In the presence of the CeCoO۳/CdS photocatalyst, the decolorization rate ofmethylene blue reached ۹۹% within ۱۵ minutes, whereas no significant conversion of methyleneblue was observed with the perovskite alone. The higher photoactivity of CeCoO۳/CdS isattributed to its lower charge recombination compared to pure perovskite. Additionally, thephotocatalytic mechanism and recycling tests of CeCoO۳/CdS are discussed in detail.

کلیدواژه ها

Conversion of Dyes,Perovskite,Photocatalyst

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