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首页> 外文期刊>ACS Sustainable Chemistry & Engineering >Glucose-Induced Formation of Oxygen Vacancy and Bi-Metal Comodified Bi5O7Br Nanotubes for Efficient Performance Photocatalysis
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Glucose-Induced Formation of Oxygen Vacancy and Bi-Metal Comodified Bi5O7Br Nanotubes for Efficient Performance Photocatalysis

机译：葡萄糖诱导的氧空位和双金属分配BI507BR纳米管的形成，用于高效性能光催化

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摘要

Here, we prepared Bi-metal modified defective Bi5O7Br nanotubes (Bi/Bi5O7Br-OV) by hydrothermal synthesis to be an efficient photocatalyst. Density function theory (DFT) revealed that oxygen vacancies in Bi5O7Br could form an intermediate level, which could allow electron transfer to a new intermediate level, and finally move to the conduction band. The Bi/Bi5O7Br-OV nanotubes demonstrate superior photocatalytic degradation of phenol, showing 3 times higher than that of pristine Bi5O7Br. The defects and Bi endow Bi5O7Br nanotubes with abundant active sites and improve the solar absorption. The increased and more dispersed charge density allow enhanced electronic conductivity and the separation of photogenerated carriers. Furthermore, more (OH)-O-center dot radicals are generated during photochemical reaction, which is beneficial in improving the photocatalytic performance. This work will play significant roles and create opportunities in modifying Bi-based materials for promoting photocatalysis.
机译：这里，我们通过水热合成制备双金属改性缺陷Bi507br纳米管（Bi / Bi5O7Br-OV），是有效的光催化剂。密度函数理论（DFT）揭示了Bi5O7BR中的氧空位可以形成中间水平，这可以允许电子转移到新的中间水平，并且最终移动到导带。 BI / BI5O7BR-OV纳米管呈现出优异的光催化降解苯酚，显示出比原始BI507BR高的3倍。具有丰富活性位点的缺陷和BI赋予BI507BR纳米管，提高太阳能吸收。增加和更多分散的电荷密度允许增强的电子电导率和光生载体的分离。此外，在光化学反应期间产生更多（OH）-O-中心点基团，这是有利于改善光催化性能的有益。这项工作将发挥重要作用，并在修改基于BI的材料中的促进光催化来创造机会。

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  • 作者

    Xu Huimin; Hu Yuwen; Huang Duan; Lin Ying; Zhao Wenxia; Huang Yongchao; Zhang Shanqing; Tong Yexiang;

  • 作者单位

    Sun Yat Sen Univ Sch Chem Key Lab Low Carbon Chem &

    Energy Conservat Guangd MOE Lab Bioinorgan &

    Synthet Chem 135 Xinggangxi Rd Guangzhou 510275 Guangdong Peoples R China;

    Sun Yat Sen Univ Sch Chem Key Lab Low Carbon Chem &

    Energy Conservat Guangd MOE Lab Bioinorgan &

    Synthet Chem 135 Xinggangxi Rd Guangzhou 510275 Guangdong Peoples R China;

    Sun Yat Sen Univ Sch Chem Key Lab Low Carbon Chem &

    Energy Conservat Guangd MOE Lab Bioinorgan &

    Synthet Chem 135 Xinggangxi Rd Guangzhou 510275 Guangdong Peoples R China;

    Sun Yat Sen Univ Sch Chem Key Lab Low Carbon Chem &

    Energy Conservat Guangd MOE Lab Bioinorgan &

    Synthet Chem 135 Xinggangxi Rd Guangzhou 510275 Guangdong Peoples R China;

    Sun Yat Sen Univ Instrument Anal &

    Res Ctr 135 Xinggangxi Rd Guangzhou 510275 Guangdong Peoples R China;

    Guangzhou Univ Key Lab Water Qual &

    Conservat Pearl River Delta Guangzhou Higher Educ Mega Ctr Inst Environm Res Greater Bay Minist Educ Outer Ring Rd 230 Guangzhou 510006 Guangdong Peoples R China;

    Griffith Univ Ctr Clean Environm &

    Energy Gold Coast Campus Southport Qld 4215 Australia;

    Sun Yat Sen Univ Sch Chem Key Lab Low Carbon Chem &

    Energy Conservat Guangd MOE Lab Bioinorgan &

    Synthet Chem 135 Xinggangxi Rd Guangzhou 510275 Guangdong Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学工业;
  • 关键词

    Bismuth oxybromide; Photodegradation; Visible light irradiation; Water treatment;

    机译：氟铋氧杂物;光降解;可见光辐照;水处理;

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