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Surface-binding through polyfunction groups of Rhodamine B on composite surface and its high performance photodegradation

机译：罗丹明B的多官能团在复合材料表面的表面结合及其高性能光降解

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摘要

A kind of novel composite ZnS/In(OH)(3)/In2S3 is synthesized using zinc oxide nanoplates as zinc raw material during hydrothermal process. Although the obtained samples are composited of ZnS and In( OH)(3) and In2S3 phase, the samples possess different structure, morphology and optical absorption property depending on molar ratio of raw materials. Zeta potential analysis indicates different surface electrical property since various content and particle size of the phases. The equilibrium adsorption study confirms the composite ZnS/In(OH)(3)/In2S3 with surface negative charge is good adsorbent for Rhodamine B (Rh B) dye. In addition, the degradation of Rh B over the samples with surface negative charge under visible light > 420 nm) is more effective than the samples with surface positive charge. The samples before and after adsorbing Rh B molecule are examined by FTIR spectra and Zetasizer. It is found that the three function groups of Rh B molecule, especially carboxyl group anchors to surface of the sample through electrostatic adsorption, coordination and hydrogen-bond. It contributes to rapid transformation of photogenerated electron to conduction band of In( OH)(3) and suppresses the recombination of photogenerated carrier. The possible adsorption modes of Rh B are discussed on the basis of the experiment results. (C) 2016 Elsevier B.V. All rights reserved.
机译：以氧化锌纳米板为锌原料，在水热过程中合成了一种新型的复合ZnS / In（OH）（3）/ In2S3。尽管所获得的样品是由ZnS和In（OH）（3）和In2S3相组成的，但样品的结构，形态和吸光度取决于原料的摩尔比。 Zeta电势分析表明，相的含量和粒度各不相同，因此表面电性能不同。平衡吸附研究证实，具有表面负电荷的复合ZnS / In（OH）（3）/ In2S3对罗丹明B（Rh B）染料具有良好的吸附性。此外，在可见光> 420 nm的情况下，具有表面负电荷的样品上Rh Rh的降解比具有表面正电荷的样品更有效。通过FTIR光谱和Zetasizer检查吸附Rh B分子之前和之后的样品。发现Rh B分子的三个官能团，尤其是羧基通过静电吸附，配位和氢键键合固定在样品表面。它有助于将光生电子快速转变为In（OH）（3）的导带，并抑制光生载流子的重组。根据实验结果讨论了Rh B可能的吸附方式。 （C）2016 Elsevier B.V.保留所有权利。

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  • 来源
    《Applied Surface Science》 |2016年第15期|59-66|共8页
  • 作者

    Wan Yiqun; Wang Xiaofen; Gu Yun; Guo Lan; Xu Zhaodi;

  • 作者单位

    Nanchang Univ, Coll Chem, Nanchang 330031, Peoples R China|Nanchang Univ, Ctr Anal & Testing, Nanchang 330047, Peoples R China;

    Nanchang Univ, Coll Chem, Nanchang 330031, Peoples R China;

    Nanchang Univ, Coll Chem, Nanchang 330031, Peoples R China|Nanchang Univ, Ctr Anal & Testing, Nanchang 330047, Peoples R China;

    Nanchang Univ, Coll Chem, Nanchang 330031, Peoples R China|Nanchang Univ, Ctr Anal & Testing, Nanchang 330047, Peoples R China;

    Nanchang Univ, Ctr Anal & Testing, Nanchang 330047, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Photocatalyst; Rh B; Adsorption; Waste water; Dye; Degradation;

    机译：光催化剂;Rh B;吸附;废水;染料;降解;

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