...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Crystal growth & design >Controllable Tuning Various Ratios of ZnO Polar Facets by Crystal Seed-Assisted Growth and Their Photocatalytic Activity
【24h】

Controllable Tuning Various Ratios of ZnO Polar Facets by Crystal Seed-Assisted Growth and Their Photocatalytic Activity

机译：晶种辅助生长可控调节ZnO极性小面的比例及其光催化活性

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 this paper, Bi_2WO_6 was, for the first time, utilized as crystal seeds to fine control the ratio of ZnO polar facets under a mild condition. The structure and photocatalytic properties of the ZnO were investigated by powder X-ray diffraction, Raman scattering measurements, X-ray photoelectron spectroscopy, field emission scanning electron microscopy, transmission electron microscopy, UV?vis diffuse reflectance spectroscopy, total organic C analyzer, Brunauer?Emmett?Teller surface areas, and electrochemical workstation. It was found that ZnO architectures were gradually changed from nanorods to nanosheets after adding a certain amount of Bi_2WO_6 crystal seeds, which led to the change of the ratio of ZnO polar facets. The formation mechanism for this ZnO and the effect of ZnO polar facets on the photocatalytic activity are explored in detail. We find that the nucleation and growth rates of ZnO are controlled by adjusting the quantity of the crystal seeds. Besides, photocatalytic activity of the samples tuned by Bi_2WO_6 crystal seeds was compared. The ratio of ZnO polar facets is the main factor influencing the photocatalytic activity. The results clearly demonstrate that the sample with a higher proportion of Zn-terminated (0001) and Oterminated (00011) polar facets is beneficial to enhance photocatalytic activity.
机译：本文首次将Bi_2WO_6用作晶种，以在温和条件下精细控制ZnO极性小面的比例。通过粉末X射线衍射，拉曼散射测量，X射线光电子能谱，场发射扫描电子显微镜，透射电子显微镜，紫外可见漫反射光谱，总有机碳分析仪，布鲁瑙尔研究了ZnO的结构和光催化性能。埃米特（Emmett）压平机表面积和电化学工作站。发现添加一定数量的Bi_2WO_6晶种后，ZnO的结构逐渐从纳米棒变成了纳米片，这导致了ZnO极性晶面比例的改变。详细探讨了这种ZnO的形成机理以及ZnO极性小面对光催化活性的影响。我们发现通过调节晶种的数量来控制ZnO的成核和生长速率。此外，比较了Bi_2WO_6晶种对样品的光催化活性。 ZnO极性小面的比例是影响光催化活性的主要因素。结果清楚地表明，具有较高比例的锌末端（0001）和末端（00011）极性小面的样品有利于增强光催化活性。

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