• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Chemistry: A European journal >Metal-Organic Framework Photosensitized TiO_2 Co-catalyst: A Facile Strategy to Achieve a High Efficiency Photocatalytic System
【24h】

Metal-Organic Framework Photosensitized TiO_2 Co-catalyst: A Facile Strategy to Achieve a High Efficiency Photocatalytic System

机译：金属有机框架光敏TiO_2助催化剂：达到高效光催化系统的容易策略

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

A 3D metal-organic framework (ADA-Cd= [Cd_2L_2(DMF)_2]·3H_2O where H_2L is (2E,2'E)-3,3'-(anthracene- 9,10-diyl)diacrylic acid) constructed from diacrylate substituted anthracene, sharing structural characteristics with some frequently employed anthraquinone-type dye sensitizers, was introduced as an effective sensitizer for anatase TiO_2 to achieve enhanced visible light photocatalytic performance. A facile mechanical mixing procedure was adopted to prepare the co-catalyst denoted as ADA-Cd/TiO_2, which showed enhanced photodegradation ability, as well as sustainability, towards several dyes under visible light irradiation. Mechanistic studies revealed that ADA-Cd acted as the antenna to harvest visible light energy, generating excited electrons, which were injected to the conduction band (CB) of TiO_2, facilitating the separation efficiency of charge carriers. As suggested by the results of control experiments, combined with the corresponding redox potential of possible oxidative species, ·O_2~-, generated from the oxygen of ambient air at the CB of TiO_2 was believed to play a dominant role over ·OH and h~+. UV/Vis and photoluminescence technologies were adopted to monitor the generation of ·O_2~- and ·OH, respectively. This work presents a facile strategy to achieve a visible light photocatalyst with enhanced catalytic activity and sustainability; the simplicity, efficiency, and stability of this strategy may provide a promising way to achieve environmental remediation.
机译：3D金属有机框架（ADA-CD = [CD_2L_2（DMF）_2]·3H_2O，其中H_2L是（2E，2'e）-3,3' - （蒽-9,10-二基）二烷酸）构成二丙烯酸酯取代的蒽，共用结构特征与一些经常使用的蒽醌型染料敏化剂，作为锐钛矿TiO_2的有效敏化剂，以实现增强的可见光光催化性能。采用容易机械混合过程制备表示为ADA-CD / TiO_2的助催化剂，其显示出在可见光照射下的几个染料中提高光降解能力，以及可持续性。机械研究表明，ADA-CD用作收获可见光能的天线，产生激发的电子，其注入TiO_2的导带（CB），便于电荷载体的分离效率。如通过对照实验的结果所提出的，结合可能的氧化物质的相应氧化还原电位，·O_2〜 - 从TiO_2的CB的氧气产生的氧气产生，据信过于·哦和H〜 +。采用UV / VI和光致发光技术监测·O_2〜 - 和·oh的产生。这项工作提出了一种容易策略，可以实现具有增强的催化活性和可持续性的可见光光催化剂;该策略的简单，效率和稳定性可能提供实现环境修复的有希望的方式。

著录项

  • 来源
    《Chemistry: A European journal》 |2017年第16期|共7页
  • 作者

    Ming-Hua Xie; Rong Shao; Xin-Guo Xi; Gui-Hua Hou; Rong-Feng Guan; Peng-Yu Dong; Qin-Fang Zhang; Xiu-Li Yang;

  • 作者单位

    Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province Yancheng Institute of Technology No. 211 Jianjun East Road Yancheng (P. R. China);

    Jiangsu Collaborative Innovation Center for Ecological Building Materials and Environmental Protection Equipments Yancheng Institute of Technology No. 1 Xiwang Avenue Yancheng (P. R. China);

    Jiangsu Collaborative Innovation Center for Ecological Building Materials and Environmental Protection Equipments Yancheng Institute of Technology No. 1 Xiwang Avenue Yancheng (P. R. China);

    Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province Yancheng Institute of Technology No. 211 Jianjun East Road Yancheng (P. R. China);

    Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province Yancheng Institute of Technology No. 211 Jianjun East Road Yancheng (P. R. China);

    Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province Yancheng Institute of Technology No. 211 Jianjun East Road Yancheng (P. R. China);

    Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province Yancheng Institute of Technology No. 211 Jianjun East Road Yancheng (P. R. China);

    Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province Yancheng Institute of Technology No. 211 Jianjun East Road Yancheng (P. R. China);

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

    charge transfer; mechanical mixing; metal- organic frameworks; photocatalysis; sensitization;

    机译：电荷转移;机械混合;金属 - 有机框架;光催化;致敏;

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