• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Applied Surface Science >Hierarchical Bi2WO6 architectures decorated with Pd nanoparticles for enhanced visible-light-driven photocatalytic activities
【24h】

Hierarchical Bi2WO6 architectures decorated with Pd nanoparticles for enhanced visible-light-driven photocatalytic activities

机译：钯纳米颗粒装饰的Bi2WO6分层体系结构，增强了可见光驱动的光催化活性

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

A new kind of hierarchical Pd-Bi2WO6 architecture decorated with different molar ratios of Pd to Bi, has been fabricated by a hydrothermal process, followed by a chemical deposition method. The photo catalytic activities of the pure Bi2WO6 and Pd-Bi2WO6 nanocatalyst were examined in the degradation of Rhodamine B (RhB) dyes and phenol under visible light. The photocatalytic results showed that the Pd-Bi2WO6 nanocomposites possessed observably enhanced photocatalytic activities. Particularly, the 2.0% Pd loaded Bi2WO6 had the highest photocatalytic activity, exhibiting a nearly complete degradation of 30 mg/L RhB and 10 mg/L phenol within only 50 and 60 min, respectively. In addition, the trapping experiment results indicated that the photo-generated holes (hi) and center dot O-2(-) played a crucial role in the degradation of RhB. According to the experimental results, the photocatalytic degradation mechanism of Pd-Bi2WO6 was also proposed. The enhanced photocatalytic activities were ascribed to the combined effects of the highly efficient separation of electrons and holes, improved visible light utilization and increased BET specific surface areas of the Pd-Bi2WO6 nanocomposites. (C) 2017 Elsevier B.V. All rights reserved.
机译：通过水热法，然后化学沉积法，制备了一种新型的分层Pd-Bi2WO6结构，装饰有不同的Pd与Bi摩尔比。在可见光下，考察了若丹明B（RhB）染料和苯酚的降解情况，研究了纯Bi2WO6和Pd-Bi2WO6纳米催化剂的光催化活性。光催化结果表明，Pd-Bi2WO6纳米复合材料具有显着增强的光催化活性。特别是，负载2.0％Pd的Bi2WO6具有最高的光催化活性，分别在50分钟和60分钟内几乎完全降解了30 mg / L RhB和10 mg / L苯酚。此外，捕获实验结果表明，光生空穴（hi）和中心点O-2（-）在RhB的降解中起着关键作用。根据实验结果，提出了Pd-Bi2WO6的光催化降解机理。增强的光催化活性归因于电子和空穴的高效分离，改善的可见光利用率和Pd-Bi2WO6纳米复合材料的BET比表面积增加的综合作用。 （C）2017 Elsevier B.V.保留所有权利。

著录项

  • 来源
    《Applied Surface Science》 |2017年第may15期|282-290|共9页
  • 作者

    Zhang Jinniu; Chen Tianhua; Lu Hongbing; Yang Zhibo; Yin Feng; Gao Jianzhi; Liu Qianru; Tu Yafang;

  • 作者单位

    Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710062, Peoples R China;

    Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710062, Peoples R China;

    Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710062, Peoples R China;

    Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710062, Peoples R China;

    Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710062, Peoples R China;

    Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710062, Peoples R China;

    Shaanxi Normal Univ, Sch Phys & Informat Technol, Xian 710062, Peoples R China;

    Jianghan Univ, Inst Interdisciplinary Res, Dept Phys, Wuhan 430056, Peoples R China;

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

    Bi2WO6; Pd; Nanocomposites; Photocatalytic activity;

    机译：Bi2WO6;Pd;纳米复合材料;光催化活性;

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