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首页> 外文期刊>Environmental research >Ternary Zn_(1-x)Ni_xSe nanostructures as efficient photocatalysts for detoxification of hazardous Congo red, methyl orange, and chrome yellow dyes in wastewater sources
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Ternary Zn_(1-x)Ni_xSe nanostructures as efficient photocatalysts for detoxification of hazardous Congo red, methyl orange, and chrome yellow dyes in wastewater sources

机译：三元Zn_（1-X）Ni_xse纳米结构作为危险刚果红，甲基橙和铬黄染料中有效的光催化剂在废水来源中的解毒

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摘要

Water contamination by hazardous organic pollutants poses an extreme threat to the environment and globally endangers aquatic life and human health. Hence, the removal of toxic organic effluents from water sources is necessary to ensure a healthy green environment. To this end, a new class of emerging, visible-light-driven Zn-and Ni-based ternary metal-selenide (Zn_(1-x)Ni_xSe) nanophotocatalysts, with tunable nanostructures via regulation of the stoichiometric ratios of Zn and Ni, were synthesized for efficient water purification by a facile one-pot hydrothermal process. These catalysts exhibit outstanding porous properties, with large surface areas and average particle sizes of around 80 ± 10 nm. The as-prepared ternary Zn_(1-x)Ni_xSe catalysts enable improved optical properties, intrinsic conductivity, bandgap reductions, and large numbers of active sites compared with pristine materials, thereby exhibiting outstanding degradation properties against various dye molecules, including Congo red, methyl orange, and chrome-IV upon visible light irradiation. The improved photo-degradation capabilities of the Zn_(1-x)Ni_xSe catalysts may be attributed to the synergistic combinations of Zn and Ni selenides, which in turn minimize the recombination rates of the photogenerated carriers compared to their individual constituents. These findings clearly demonstrate that the proposed ternary Zn_(1-x)Ni_xSe catalysts could be potentially used to remove toxic organic contaminants from industrial wastewater.
机译：危险有机污染物的水污染对环境和全球危及水生生活和人类健康构成极大的威胁。因此，需要从水源中去除有毒有机污水，以确保健康的绿色环境。为此，通过调节Zn和Ni的化学计量比率，通过调节Zn和Ni的化学计量比（合成以通过容易的单壶水热法纯化有效净化。这些催化剂具有出色的多孔性质，表面积大，平均粒度约为80±10nm。与原始材料相比，制备的AS制备的三元Zn_（1-X）Ni_xSE催化剂使得具有改善的光学性质，内在电导率，带隙还原和大量活性位点，从而对各种染料分子表现出突出的降解性质，包括刚果红色，甲基可见光照射时橙色和铬-4。 Zn_（1-x）Ni_xSE催化剂的改善的光降解能力可以归因于Zn和Ni硒化族的协同组合，其又最小化了与其各自的组分相比的光发生载体的重组率。这些发现清楚地表明，所提出的三元Zn_（1-X）Ni_xSE催化剂可能用于除去工业废水中的有毒有机污染物。

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  • 来源
    《Environmental research》 |2021年第10期|111587.1-111587.12|共12页
  • 作者

    K. Karuppasamy; Dhanasekaran Vikraman; Tassawar Hussain; Sajjad Hussain; Ranjith Bose; Periyasamy Sivakumar; Arun Prasad Murthy; Akram Alfantazi; Hyun-Seok Kim;

  • 作者单位

    Division of Electronics and Electrical Engineering Dongguk University-Seoul Seoul 04620 Republic of Korea;

    Division of Electronics and Electrical Engineering Dongguk University-Seoul Seoul 04620 Republic of Korea;

    Department of Nanotechnology and Advanced Materials Engineering Sejong University Seoul 05006 Republic of Korea;

    Department of Nanotechnology and Advanced Materials Engineering Sejong University Seoul 05006 Republic of Korea;

    Department of Chemical Engineering Khalifa University Abu Dhabi 127788 United Arab Emirates;

    Department of Chemistry Dongguk University-Seoul Seoul 04620 Republic of Korea;

    Department of Chemistry School of Advanced Sciences Vellore Institute of Technology Vellore Tamil Nadu 632014 India;

    Department of Chemical Engineering Khalifa University Abu Dhabi 127788 United Arab Emirates;

    Division of Electronics and Electrical Engineering Dongguk University-Seoul Seoul 04620 Republic of Korea;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Wastewater treatment; Zinc-nickel selenide; Organic dye molecules; Photodegradation; Nanoporous;

    机译：废水处理;锌镍硒代;有机染料分子;光降解;纳米多孔;

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