• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Nanotechnology >Photocatalytic activity of TiO 2 nanoparticles: Effect of thermal annealing under various gaseous atmospheres
【24h】

Photocatalytic activity of TiO 2 nanoparticles: Effect of thermal annealing under various gaseous atmospheres

机译：TiO 2纳米粒子的光催化活性：在各种气体气氛下热退火的影响

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

The structure, composition and photocatalytic activity of TiO 2 nanoparticles annealed in various gas atmospheres (N 2, NH 3 and H 2) were studied in this work. The effect of treatment on crystal structure, particle size, chemical composition and optical absorbance were assessed by means of x-ray diffraction, transmission electron microscopy, x-ray photoelectron spectroscopy and diffuse optical reflectance/transmittance measurements, respectively. Photocatalytic properties of the materials were evaluated by three different methods: degradation of methyl orange in water, killing of Staphylococcus aureus bacteria and photogeneration of radicals in the presence of 3-carboxy-2,2,5,5-tetramethyl pyrrolidine-1-oxyl (PCA) marker molecules. The results indicate that the correlation between pretreatment and the photocatalytic performance depends on the photocatalytic processes and cannot be generalized.
机译：本文研究了在各种气体气氛（N 2，NH 3和H 2）下退火的TiO 2纳米颗粒的结构，组成和光催化活性。分别通过X射线衍射，透射电子显微镜，X射线光电子能谱和漫射光反射率/透射率测量来评估处理对晶体结构，粒度，化学组成和吸光度的影响。通过三种不同的方法评估了该材料的光催化性能：甲基橙在水中的降解，金黄色葡萄球菌的杀灭以及在3-羧基-2,2,5,5-四甲基吡咯烷-1-氧基存在下自由基的光生化（PCA）标记分子。结果表明，预处理与光催化性能之间的相关性取决于光催化过程，不能一概而论。

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