• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Plasmonic photocatalyst Ag@AgCl/ZnSn(OH)(6): synthesis, characterization and enhanced visible-light photocatalytic activity in the decomposition of dyes and phenol
【24h】

Plasmonic photocatalyst Ag@AgCl/ZnSn(OH)(6): synthesis, characterization and enhanced visible-light photocatalytic activity in the decomposition of dyes and phenol

机译：等离子体光催化剂AG @ AGCL / ZnSN（OH）（6）：在染料和苯酚分解中的合成，表征和增强的可见光光催化活性

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

An efficient visible-light-driven photocatalyst Ag@AgCl/ZnSn(OH)(6) (Ag@AgCl/ZSH) was successfully fabricated by an ultrasonic assisted precipitation-photoreduction method at room temperature. The photophysical properties of the as-prepared samples were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDX), UV-vis diffuse reflectance spectroscopy (DRS), X-ray photoelectron spectroscopy (XPS), and photoluminescence emission spectra (PL) analysis. The photocatalytic activities of the as-prepared samples were evaluated by the photodegradation of rhodamine B (RhB), crystal violet (CV) and phenol aqueous solution. The Ag@AgCl (8 wt%)/ZSH-20 composite exhibited the optimal photocatalytic performance, and the corresponding degradation rates for RhB, CV and phenol solution were as high as 22/3.6, 15/4 and 16/3.6 times those of pure ZSH and the conventional visible-light photocatalyst N-TiO2, respectively. The effect of photoreduction time on the photocatalytic properties of the Ag@AgCl/ZSH composites was systematically investigated. Moreover, a possible degradation mechanism was proposed based on reaction equations and a simulated scheme on the basis of active species trapping experiments and band energy analysis. The dramatically enhanced photocatalytic performance of Ag@AgCl/ZSH should be ascribed to the surface plasmon resonance (SPR) effect from Ag@AgCl nanoparticles and high separation of photogenerated electron-hole pairs in the photocatalytic process, leading to low recombination rates of the photoinduced electron-hole pairs. High degradation efficiencies and physicochemical features were maintained after five recycling experiments, indicating that the photocatalysts were relatively durable and stable. It is expected that the plasmonic photocatalyst Ag@AgCl/ZSH is a promising candidate material for the photodegradation of organic pollutants in wastewater.
机译：通过在室温下通过超声波辅助沉淀光电方法成功制造了一种高效的可见光光催化剂Ag @ AgCl / ZnSn（OH）（6）（Ag @ AgCl / Zsh）。通过X射线衍射（XRD），傅立叶变换红外光谱（FTIR），扫描电子显微镜（SEM），透射电子显微镜（TEM），能量分散X射线光谱（EDX）的表征如制备的样品的表征。（EDX ），UV-VI扩散反射光谱（DRS），X射线光电子能谱（XPS）和光致发光发射光谱（PL）分析。通过罗丹明B（RHB），晶体紫（CV）和酚类水溶液的光降解来评价AS制备样品的光催化活性。 Ag @ AgCl（8wt％）/ ZSH-20复合材料表现出最佳的光催化性能，并且RHB，CV和酚溶液的相应降解速率高达22 / 3.6,15 / 4和16 / 3.6倍纯ZSH和常规的可见光光催化剂N-TiO2分别。系统研究了光电催化时间对Ag @ AgCl / ZSH复合材料的光催化性能的影响。此外，基于反应方程提出了一种可能的降解机制，基于活性物种诱捕实验和带能量分析。 Ag @ AgCl / Zsh的显着增强的光催化性能应归因于Ag @ AgCl纳米颗粒的表面等离子体共振（SPR）效应，并在光催化过程中的光生电子空穴对的高分分离，导致光致强的低重组率电子孔对。在五次再循环实验后保持高降解效率和物理化学特征，表明光催化剂相对耐用且稳定。预期，等离子体光催化剂Ag @ Agcl / Zsh是一种有希望的候选材料，用于污水中有机污染物的光降解。

著录项

  • 来源
    《RSC Advances》 |2015年第78期|共13页
  • 作者

    Chen Fei; Yang Qi; Niu Chenggang; Li Xiaoming; Zhangab Chang; Zengab Guangming;

  • 作者单位

    Hunan Univ Coll Environm Sci &

    Engn Changsha 410082 Hunan Peoples R China;

    Hunan Univ Coll Environm Sci &

    Engn Changsha 410082 Hunan Peoples R China;

    Hunan Univ Coll Environm Sci &

    Engn Changsha 410082 Hunan Peoples R China;

    Hunan Univ Coll Environm Sci &

    Engn Changsha 410082 Hunan Peoples R China;

    Hunan Univ Coll Environm Sci &

    Engn Changsha 410082 Hunan Peoples R China;

    Hunan Univ Coll Environm Sci &

    Engn Changsha 410082 Hunan Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号