• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Seeding-induced construction of N-doped TiO2-bronze@g-C3N4 two-dimensional binary nanojunctions with enhanced photocatalytic activity
【24h】

Seeding-induced construction of N-doped TiO2-bronze@g-C3N4 two-dimensional binary nanojunctions with enhanced photocatalytic activity

机译：增强光催化活性的播种诱导的N掺杂TiO2-铜@ G-C3N4二维二元纳入的构建

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

Nitrogen-doped TiO2-bronze@g-C3N4 (TiO2 (B)@g-C3N4) two-dimensional binary heterojunctions were constructed based on seeding-induced growth through a microwave-assisted solvothermal process and subsequent thermal treatment in a vacuum. The morphology of the TiO2 (B) nanosheets could be controlled by tuning the concentration of the Ti precursor, which determined the enhanced photoelectron activity. The optimal photocatalytic activity for the degradation of methyl orange (MO) under low-intensity visible-light illumination was obtained at a TiO2 (B)/g-C3N4 molar ratio of 1 : 1, which was 12.7 and 7.9 times higher than that of pure g-C3N4 and P25, respectively. The photocatalytic activity was further enhanced by about 7.7% after in situ N-doping. The improvement in photocatalytic activity of N-doped TiO2 (B)@g-C3N4 hetero-nanojunctions was attributable to the strong absorption in the visible-light region and better separation of photogenerated electron-hole pairs at the nanojunction interface, a result due to the large contact area between N-doped TiO2 (B) and g-C3N4 nanosheets. We have explained the photocatalytic degradation of MO molecules largely in terms of the direct oxidation by the photogenerated holes and partly by the contribution of the superoxide radicals.
机译：基于通过微波辅助的溶剂热法和随后的真空热处理，基于播种诱导的生长和随后的真空热处理构建氮掺杂TiO2-Bronze @ G-C3N4（TiO 2（B）@ G-C3N4）二维二元杂疾病。可以通过调节Ti前体的浓度来控制TiO2（B）纳米片的形态，该浓度确定了增强的光电子活性。在低强度可见光照射下，以1：1的TiO 2（b）/ g-c3n4摩尔比获得甲基橙（Mo）降解的最佳光催化活性为12.7％，比纯G-C3N4和P25分别。在原位n掺杂后，光催化活性将进一步提高约7.7％。 n掺杂TiO2（b）的光催化活性的改善是可归因于可见光区域中的强吸收，并且在纳米结界面处更好地分离光生电子 - 空穴对，因此n掺杂TiO2（b）和g-c3n4纳米片之间的大接触区域。我们已经在光催化孔的直接氧化方面已经解释了Mo分子的光催化降解，部分通过超氧化物自由基的贡献。

著录项

  • 来源
    《RSC Advances》 |2015年第63期|共10页
  • 作者

    Yang Yilong; Li Yongli; Wang Jinshu; Zhang Yan; He Di; Wua Junshu; Dai Hongxing;

  • 作者单位

    Beijing Univ Technol Sch Mat Sci &

    Engn Key Lab Adv Funct Mat Beijing 100124 Peoples R China;

    Beijing Univ Technol Sch Mat Sci &

    Engn Key Lab Adv Funct Mat Beijing 100124 Peoples R China;

    Beijing Univ Technol Sch Mat Sci &

    Engn Key Lab Adv Funct Mat Beijing 100124 Peoples R China;

    Beijing Univ Technol Sch Mat Sci &

    Engn Key Lab Adv Funct Mat Beijing 100124 Peoples R China;

    Beijing Univ Technol Sch Mat Sci &

    Engn Key Lab Adv Funct Mat Beijing 100124 Peoples R China;

    Beijing Univ Technol Sch Mat Sci &

    Engn Key Lab Adv Funct Mat Beijing 100124 Peoples R China;

    Beijing Univ Technol Lab Green Catalysis &

    Separat Key Lab Beijing Reg Air Pollut Control Beijing 100124 Peoples R China;

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

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