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Photocatalytic performance of Cu_3SnS_4 (CTS)/reduced graphene oxide (rGO) composite prepared via ball milling and solvothermal approach

机译:Cu_3SNS_4(CTS)/氧化石墨氧化物(RGO)复合材料的光催化性能通过球磨和溶剂热方法制备

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摘要

A visible light-driven Cu_3SnS_4/rGO (CTS/rGO) composite photocatalyst was prepared using ball milling (B) and solvothermal (S) method. CTS prepared by both the methods was preferentially oriented along the (112) plane exhibiting a tetragonal structure. The SEM image indicates an irregular structure and flower-like appearance in the morphology of CTS samples prepared by ball milling and solvothermal process, respectively. The impact on the morphological structure of CTS by incorporating rGO in both the methods of preparation has been analysed. UV-vis-DRS shows that the incorporation of rGO effectively influences the light response performance of the composite material in visible light. The photoluminescence (PL) spectra reveal that the composite photocatalyst can either effectually detach the electron-hole pairs and curtail their recombination or enhance the recombination based on the method of preparation owing to the phase purity of the prepared sample. Degradation of the model pollutant methylene blue (MB) was used to study the photocatalytic activity of the samples. The influence of rGO incorporation on the functioning of CTS as a photocatalyst has been studied. The species trapping experiments depicted the prominent role of h~+ active species in the photocatalytic degradation of MB. The mechanism of photocatalysis in the presence of CTS/rGO has been discussed in detail.
机译:使用球磨(B)和溶剂热法制备可见光驱动的Cu_3SNS_4 / RGO(CTS / RGO)复合光催化剂。通过两种方法制备的CTS优先沿着表现出四方结构的(112)平面。 SEM图像分别表示通过球磨和溶剂热处理制备的CTS样品形态的不规则结构和花样外观。分析了通过在两种准备方法中掺入RGO对CTS形态结构的影响。 UV-Vis-DRS表明,Rgo的掺入有效地影响了可见光中复合材料的光响应性能。光致发光(PL)光谱揭示了复合光催化剂可以有效地拆下电子 - 空穴对并基于制备样品的相纯度制备方法来缩减它们的重组或增强重组。模型污染物亚甲基蓝(MB)的降解用于研究样品的光催化活性。研究了RGO掺入对CTS作为光催化剂功能的影响。物种诱捕实验描绘了H〜+活性物种在MB的光催化降解中的突出作用。已经详细讨论了CTS / Rgo存在下的光催化机制。

著录项

  • 来源
    《Journal of materials science》 |2020年第23期|21408-21418|共11页
  • 作者单位

    Department of Physics Karunya Institute of Technology and Sciences Coimbatore 641 114 India;

    Department of Physics Karunya Institute of Technology and Sciences Coimbatore 641 114 India Shaanxi Key Laboratory for Theoretical Physics Frontiers Institute of Modern Physics Northwest University Xian 710069 People's Republic of China;

    Department of Chemistry Karunya Institute of Technology and Sciences Coimbatore 641 114 India;

    Department of Physics Karunya Institute of Technology and Sciences Coimbatore 641 114 India Centre for Nanoscience and Genomics Karunya Institute of Technology and Sciences Coimbatore 641 114 India;

    Department of Physics Karunya Institute of Technology and Sciences Coimbatore 641 114 India;

    Shaanxi Key Laboratory for Theoretical Physics Frontiers Institute of Modern Physics Northwest University Xian 710069 People's Republic of China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
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