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A special Ag/AgCl network-nanostructure for selective catalytic degradation of refractory chlorophenol contaminants

机译：一种特殊的Ag / AgCl Network-纳米结构，用于难治性氯酚污染物的选择性催化降解

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摘要

A special Ag/AgCl network-nanostructure was synthesized based on a Ag nanowire (NW) or nanosphere template through the element lithographic network construction process. The structure of obtained Ag/AgCl is a 3D nanoscale network-structure that consists of the network NWs with the average diameter of similar to 20 nm and porous channels with narrow macropore distribution from 50 to 100 nm. As-designed network-nanostructures not only provide firm frame support for the active sites, but also offer large surface areas and numerous reaction performance chambers, and consequently greatly facilitate reactant diffusion and transport. Employed as UV-driven plasmonic photocatalysts, the formulated Ag/AgCl nano-networks exhibit excellent performance and stability for the selective degradation of chlorophenol contaminants. Compared with the commercial P25-TiO2, the prepared Ag/AgCl network-nanostructures show considerably higher photocatalytic activity, in which the network-structured nanospheres are better than network-structured NWs toward the selective degradation of 4-chlorophenol with the reaction rate constant of 0.28 min(-1), suggesting good potential application for organic pollutant elimination.
机译：通过元素光刻网络施工过程基于Ag纳米线（NW）或纳米环模板来合成特殊的Ag / AgCl Network-Nanostructure。获得的Ag / AgCl的结构是3D纳米级网络结构，该结构由平均直径的网络NW组成，其平均直径与20nm和多孔通道具有窄的宏观分布从50至100nm。设计的网络 - 纳米结构不仅为有源部位提供了坚固的框架支撑，而且提供大的表面积和许多反应性能室，因此极大地促进了反应性扩散和运输。用作UV驱动的等离子体光催化剂，配制的Ag / AgCl纳米网络具有出色的性能和稳定性，用于氯酚污染物的选择性降解。与商业P25-TiO2相比，制备的Ag / AgCl Network-纳米结构显示出相当高的光催化活性，其中网络结构纳米球优于网络结构的NW，朝向4-氯蛋白选择的反应速度常数0.28分钟（-1），表明有机污染物消除的良好潜在应用。

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  • 来源
    《RSC Advances》 |2015年第16期|共7页
  • 作者

    Huang Zaidi; Wen Ming; Wu Dandan; Wu Qingsheng;

  • 作者单位

    Tongji Univ Dept Chem Lab Yangtze River Water Environm Minist Educ Shanghai 200092 Peoples R China;

    Tongji Univ Dept Chem Lab Yangtze River Water Environm Minist Educ Shanghai 200092 Peoples R China;

    Tongji Univ Dept Chem Lab Yangtze River Water Environm Minist Educ Shanghai 200092 Peoples R China;

    Tongji Univ Dept Chem Lab Yangtze River Water Environm Minist Educ Shanghai 200092 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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