...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Materials Research >Hydrothermal synthesis of star-shaped Bi_5O_7Br catalysts with strong visible light catalytic performance
【24h】

Hydrothermal synthesis of star-shaped Bi_5O_7Br catalysts with strong visible light catalytic performance

机译：具有强可见光催化性能的星状Bi_5O_7BR催化剂的水热合成

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

Micron star-shaped Bi_5O_7Br catalysts were synthesized, with Bi(NO_3)_3·5H_2O and cetyltrimethylammonium bromide (CTAB) as raw materials, by using a simple hydrothermal method. X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), and UV-visible diffuse reflectance spectroscopy (UV-vis DRS) were used to characterize the samples. It was found that tetragonal star-shaped Bi_5O_7Br crystals with high crystallinity could be obtained as pH value of the solution was about 9. Compared with flaky BiOBr particles, the star-shaped Bi_5O_7Br sample displayed red-shift in the UV-visible absorption edge, whereas the band gap was reduced to 2.57 eV and the specific surface area was increased. Among all samples, the star-shaped Bi_5O_7Br had the highest photocatalytic efficiency. After visible light irradiation for 10 min, the degradation rate of the rhodamine B (RhB) solution with a concentration of 10 mg·L~(-1) was almost 100％. Also, its photocatalytic activity was nearly unchanged after five cycles. It is believed that such Bi_5O_7Br could be used as stable and effective visible light catalysts.
机译：微米星形Bi_5O_7Br催化剂合成的Bi（NO_3）_3·5H_2O和十六烷基三甲基铵（CTAB）为原料，通过使用简单的水热法。 X射线衍射（XRD），扫描电子显微镜（SEM），高分辨率的透射电子显微镜（HRTEM），和紫外可见漫反射光谱（UV-VIS DRS）来表征样品。据发现，四方Bi_5O_7Br星形晶体具有高结晶可以作为溶液的pH值约为9。用片状BiOBr颗粒，Bi_5O_7Br星形样品显示在紫外 - 可见吸收边缘红移相比获得，而带隙降低到2.57 eV和比表面积增加。在所有样品中，星形Bi_5O_7Br具有最高的光催化效率。可见光照射10分钟后，用浓度为10mg若丹明B（罗丹明B）溶液的降解速率·L〜（-1）几乎为100％。此外，它的光催化活性是五个周期后，几乎没有变化。据认为，这种Bi_5O_7Br可以作为稳定和有效的可见光催化剂。

著录项

  • 来源
    《Journal of Materials Research》 |2021年第3期|628-636|共9页
  • 作者

    Ligang Zhu; Yuan Chen; Zhuohao Xiao; Huanggen Yang; Lingbing Kong;

  • 作者单位

    Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology College of Chemistry and Food Science Yulin Normal University Yulin 537000 Guangxi China;

    Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology College of Chemistry and Food Science Yulin Normal University Yulin 537000 Guangxi China;

    School of Materials Science and Engineering Jingdezhen Ceramic Institute Jingdezhen 333403 Jiangxi China;

    Guangxi Key Laboratory of Agricultural Resources Chemistry and Biotechnology College of Chemistry and Food Science Yulin Normal University Yulin 537000 Guangxi China;

    School of Materials Science and Engineering Jingdezhen Ceramic Institute Jingdezhen 333403 Jiangxi China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 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