首页> 外文期刊>Chemical Physics Letters >EPR study on paramagnetic species in nitrogen-doped ZnO powders prepared by a mechanochemical method
【24h】

EPR study on paramagnetic species in nitrogen-doped ZnO powders prepared by a mechanochemical method

机译:机械化学法制备氮掺杂ZnO粉体中顺磁性物质的EPR研究

获取原文
获取原文并翻译 | 示例
           

摘要

Paramagnetic species in nitrogen-doped ZnO (N-ZnO) powders, visible light sensitive photocatalysts exhibiting antibacterial activity, have been investigated using EPR spectroscopy. The N-ZnO photocatalysts showed two kinds of EPR signals due to a singly ionized nitrogen (N-2(-)) and a shallow donor. Visible light irradiation to the N-ZnO particles shows reversible response of reduction of EPR signal of the N-2(-) radical site and increase,of that due to shallow donor. The results indicate that the N-2(-) is converted to a diamagnetic neutral molecular nitrogen acceptor (N-2(0)) by visible light and photoinduced electrons are trapped to the shallow donor sites. (c) 2007 Elsevier B.V. All rights reserved.
机译:使用EPR光谱研究了氮掺杂ZnO(N-ZnO)粉末中的顺磁性物质,这是一种具有抗菌活性的可见光敏感型光催化剂。由于单离子氮(N-2(-))和浅施主,N-ZnO光催化剂显示出两种EPR信号。可见光照射到N-ZnO颗粒上显示出N-2(-)自由基位点的EPR信号减少和增加的可逆响应,这归因于浅的施主。结果表明,N-2(-)通过可见光转化为反磁性中性分子氮受体(N-2(0)),光诱导电子被俘获到较浅的供体位置。 (c)2007 Elsevier B.V.保留所有权利。

著录项

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