...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Magnetic composite photocatalyst ZnFe_2O_4/BiVO 4: Synthesis, characterization, and visible-light photocatalytic activity
【24h】

Magnetic composite photocatalyst ZnFe_2O_4/BiVO 4: Synthesis, characterization, and visible-light photocatalytic activity

机译：磁性复合光催化剂ZnFe_2O_4 / BiVO 4的合成，表征及可见光催化活性

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

Magnetic composite ZnFe_2O_4/BiVO_4 was successfully synthesized by the one-step chemical coprecipitation method. The photocatalytic activity of BiVO_4 was improved by doping ZnFe _2O_4 that possessed a narrow band gap, which enabled the ZnFe_2O_4/BiVO_4 composite to show increased visible-light absorption and further generate more photo-produced electrons than pure BiVO_4. The experimental results showed that the photocatalytic ability of the composite was better than that of pure BiVO_4 under visible light irradiation. The n-type ZnFe_2O_4 nanoparticles were uniformly distributed on the surface of n-type BiVO _4, leading to the formation of n-n-type heterogeneous structures in the composite system. Since CB and VB potentials of ZnFe_2O _4 and BiVO_4 were differential, the photo-produced electrons and holes would migrate to a position at a relatively positive potential and a relatively negative potential, respectively, which enhanced the separation efficiency between photo-produced electrons and holes and thus further contributed to the enhancement of photocatalytic activity.
机译：通过一步化学共沉淀法成功合成了磁性复合材料ZnFe_2O_4 / BiVO_4。通过掺杂具有窄带隙的ZnFe _2O_4可以提高BiVO_4的光催化活性，这使得ZnFe_2O_4 / BiVO_4复合材料显示出比纯BiVO_4更高的可见光吸收并进一步产生更多的光生电子。实验结果表明，在可见光照射下，复合材料的光催化性能优于纯BiVO_4。 n型ZnFe_2O_4纳米颗粒均匀分布在n型BiVO _4的表面上，导致在复合体系中形成n-n型异质结构。由于ZnFe_2O _4和BiVO_4的CB和VB电位不同，因此光生电子和空穴将分别迁移到相对正电势和相对负电势的位置，从而提高了光生电子与空穴之间的分离效率因此进一步有助于增强光催化活性。

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