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Abstract <p>Designing and constructing heterojunctions is an effective way to exert the synergistic effect of semiconductor photocatalysts. In this paper, a novel CuIn<sub>11</sub>S<sub>17</sub>/g-C<sub>3</sub>N<sub>4</sub> (CIS/CN) Z-scheme heterojunction photocatalyst was hydrothermally synthesized and systematically characterized. The photocatalytic performance was evaluated by degrading Rhodamine B under visible light irradiation. As expected, the optimized CIS/CN (0.75) sample showed superior photocatalytic activity, and the photocatalytic degradation efficiencies were 2.68 and 2.82 times those of pristine CuIn<sub>11</sub>S<sub>17</sub> (CIS) and g-C<sub>3</sub>N<sub>4</sub> (CN), respectively. The enhancement of photocatalytic activity is ascribed to the formation of a Z-scheme heterojunction between CIS and CN, which is conducive to the migration and separation of photogenerated carriers and enhances the light absorption capacity. Moreover, a photocatalytic mechanism involving <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11502_2025_3461_Article_IEq1.gif" Format="GIF" Height="20" Rendition="HTML" Resolution="72" Type="Linedraw" Width="25" /> </InlineMediaObject> <EquationSource Format="TEX">\({\text{O}}_{2}^{ - }\)</EquationSource> <!--InrgChem2460311Fang-m1--> </InlineEquation> and h<sup>+</sup> as major active species was proposed based on photoelectric properties and active species capture experiments. The present work provides a promising approach for the design and construction of highly efficient visible light-responsive photocatalysts for the treatment of persistent pollutants in wastewater.</p>

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Hydrothermal Construction and Visible-Light Driven Photodegradation Performance of CuIn11S17/g-C3N4 Heterojunction

  • 期刊论文

  • 发表日期：

    2025年2月12日

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  • Xiao-Qiang Feng,
  • Min Zhou,
  • Yan Du,
  • Jia-Yi Cai,
  • Jin-Yan Bi,
  • Jing-Yi Wang,
  • Yan-Dong Wang,
  • Xiao-Fang Li

摘要

Abstract

Designing and constructing heterojunctions is an effective way to exert the synergistic effect of semiconductor photocatalysts. In this paper, a novel CuIn11S17/g-C3N4 (CIS/CN) Z-scheme heterojunction photocatalyst was hydrothermally synthesized and systematically characterized. The photocatalytic performance was evaluated by degrading Rhodamine B under visible light irradiation. As expected, the optimized CIS/CN (0.75) sample showed superior photocatalytic activity, and the photocatalytic degradation efficiencies were 2.68 and 2.82 times those of pristine CuIn11S17 (CIS) and g-C3N4 (CN), respectively. The enhancement of photocatalytic activity is ascribed to the formation of a Z-scheme heterojunction between CIS and CN, which is conducive to the migration and separation of photogenerated carriers and enhances the light absorption capacity. Moreover, a photocatalytic mechanism involving \({\text{O}}_{2}^{ - }\) and h+ as major active species was proposed based on photoelectric properties and active species capture experiments. The present work provides a promising approach for the design and construction of highly efficient visible light-responsive photocatalysts for the treatment of persistent pollutants in wastewater.