• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Applied Surface Science >Effective photoinduced charge separation and photocatalytic activity of hierarchical microsphere-like C_(60)/BiOCl
【24h】

Effective photoinduced charge separation and photocatalytic activity of hierarchical microsphere-like C_(60)/BiOCl

机译：有效的光诱导电荷分离和类似的微球状C_（60）/ BiOCl的光催化活性

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

In order to further improve the photocatalytic performance of BiOCl, C60 modified BiOCl photocatalysts with enhanced photocatalytic activity were prepared in-situ through a typical hydrothermal method (453 K, 24 h). The morphology of the 1.0% C-60/BiOCl is completely different from that of the bare BiOCl, suggesting that C-60 significantly influences the growth of the C-60/BiOCl microsphere. The results of XRD, XPS and Raman demonstrate a strong chemical interaction exists between C-60 and BiOCl. C-60 modified BiOCl photocatalysts exhibit excellent photocatalytic activity and stability toward degradation of phenol and rhodamine (RhB) under simulated solar irradiation in comparison with the bare BiOCl. The 1.0% (wt%) C-60/BiOCl displays the best photocatalytic activity, the first-order kinetics degradation rate constants of phenol and RhB over the 1.0% C-60/BiOCl are 3 and 9 times of that over the bare BiOCl, respectively. The reactive free species were detected by trapping and electron spin resonance (ESR) experiments under simulated sunlight irradiation, the results reveal that superoxide free radical (O-2(center dot-)) and hole (h(+)) are the major active free radicals, furthermore the 1.0% C-60/BiOCl produces more active free radicals. On account of all the observations, the high separation rate of photogenerated electrons and holes is in favor of the relative high photocatalytic activity of C-60/BiOCl, originating from the intense chemical interaction between BiOCl and C-60.
机译：为了进一步改善BiOCl的光催化性能，通过典型的水热法（453 K，24 h）原位制备了具有增强的光催化活性的C60改性的BiOCl光催化剂。 1.0％C-60 / BiOCl的形态与裸BiOCl的形态完全不同，表明C-60显着影响C-60 / BiOCl微球的生长。 XRD，XPS和Raman的结果证明C-60与BiOCl之间存在强化学相互作用。与裸BiOCl相比，C-60改性的BiOCl光催化剂在模拟的太阳辐射下表现出出色的光催化活性和对苯酚和若丹明（RhB）降解的稳定性。 1.0％（wt％）的C-60 / BiOCl表现出最好的光催化活性，相对于1.0％C-60 / BiOCl，苯酚和RhB的一级动力学降解速率常数是裸BiOCl的3和9倍。 ， 分别。通过捕获和电子自旋共振（ESR）实验在模拟的阳光照射下检测到反应性自由基，结果表明，超氧自由基（O-2（中心点-））和空穴（h（+））是主要的活性物质。自由基，此外1.0％C-60 / BiOCl会产生更多的活性自由基。由于所有观察，光生电子和空穴的高分离速率有利于C-60 / BiOCl相对较高的光催化活性，这是由于BiOCl和C-60之间的强烈化学相互作用所致。

著录项

  • 来源
    《Applied Surface Science》 |2019年第28期|249-258|共10页
  • 作者

    Ma Dongmei; Zhong Junbo; Peng Rufang; Li Jianzhang; Duan Ran;

  • 作者单位

    Sichuan Univ Sci & Engn, Coll Chem & Environm Engn, Key Lab Green Catalysis, Higher Educ Inst Sichuan, Zigong 643000, Peoples R China;

    Sichuan Univ Sci & Engn, Coll Chem & Environm Engn, Key Lab Green Catalysis, Higher Educ Inst Sichuan, Zigong 643000, Peoples R China;

    China Acad Engn Phys, Res Ctr Laser Fus, Mianyang 621010, Peoples R China;

    Sichuan Univ Sci & Engn, Coll Chem & Environm Engn, Key Lab Green Catalysis, Higher Educ Inst Sichuan, Zigong 643000, Peoples R China;

    Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Key Lab Photochem, Beijing 100190, Peoples R China;

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

    Photocatalysis; C-60; BiOCl; Surface modification; O-2(center dot-);

    机译：光催化;C-60;BiOCl;表面改性;O-2（中心点）;

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