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首页> 外文期刊>Environmental Engineering Science >Magnetic Recoverable F-N Co-Doped ZnFe2O4/C/TiO2 Nanocomposites with UV-Vis Light Photocatalytic Activity
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Magnetic Recoverable F-N Co-Doped ZnFe2O4/C/TiO2 Nanocomposites with UV-Vis Light Photocatalytic Activity

机译：具有紫外可见光光催化活性的磁性可回收F-N共掺杂ZnFe2O4 / C / TiO2纳米复合材料

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摘要

F-N co-doped TiO2/C/ZnFe2O4 (ZCT-FN) catalyst with excellent UV-Vis photocatalytic activity and recyclable performance was successfully synthesized by the sol-gel method. X-ray power diffraction results showed that ZCT-FN was anatase titanium dioxide with good crystallinity. X-ray photoelectron spectroscopy and UV-Vis revealed that F and N were co-doped into the lattice of TiO2, and a red shift of the absorption edge was brought out owing to F and N co-doping. Comparing to undoped TiO2/C/ZnFe2O4 and TiO2/ZnFe2O4, ZCT-FN exhibited an excellent photocatalytic activity for degradation of methyl orange both under UV- and Vis-light irradiation. Visible light photocatalytic degradation activity of ZCT-FN is nearly 4.2 times higher compared with P25. The high activity of ZCT-FN can be attributed to the synergetic effects of strong absorption and narrow band gap induced by F, N co-doping and narrow band gap semiconductor ZnFe2O4. The carbon layer between outer layer TiO2 and ZnFe2O4 core can effectively suppress the photodissolution behavior of catalyst. Moreover, ZCT-FN can be easily separated after the photocatalytic reaction and remain as stable photocatalytic activity after five cycles. This work not only offers a controllable method for the fabrication of F-N co-doped TiO2/C/ZnFe2O4 core-shell structure hybrids but also provides an effective and conveniently recyclable photocatalyst for the practical application in the purification of wastewater.
机译：通过溶胶-凝胶法成功合成了具有优良的UV-Vis光催化活性和可回收性能的F-N共掺杂TiO2 / C / ZnFe2O4（ZCT-FN）催化剂。 X射线功率衍射结果表明，ZCT-FN为锐钛型二氧化钛，具有良好的结晶度。 X射线光电子能谱和UV-Vis分析表明，F和N共掺杂到TiO2晶格中，并且由于F和N共掺杂而引起吸收边缘的红移。与未掺杂的TiO2 / C / ZnFe2O4和TiO2 / ZnFe2O4相比，ZCT-FN在紫外和可见光照射下均具有优异的光催化降解甲基橙的活性。 ZCT-FN的可见光光催化降解活性是P25的近4.2倍。 ZCT-FN的高活性归因于F，N共掺杂和窄带隙半导体ZnFe2O4引起的强吸收和窄带隙的协同效应。外层TiO2与ZnFe2O4核之间的碳层可有效抑制催化剂的光溶解行为。而且，ZCT-FN在光催化反应后可以容易地分离并且在五个循环后仍保持稳定的光催化活性。这项工作不仅为制造F-N共掺杂的TiO2 / C / ZnFe2O4核-壳结构杂化体提供了一种可控的方法，而且为废水净化中的实际应用提供了一种有效且方便回收的光催化剂。

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  • 来源
    《Environmental Engineering Science》 |2018年第1期|37-45|共9页
  • 作者

    Wei Fengyu; Liu Tao; Zhou Fuzhi; Ran Wei; Yao Yunjin; Wang Hui; Wang Pinghua;

  • 作者单位

    Hefei Univ Technol, Sch Chem & Chem Engn, Hefei 230009, Anhui, Peoples R China;

    Hefei Univ Technol, Sch Chem & Chem Engn, Hefei 230009, Anhui, Peoples R China;

    Hefei Univ Technol, Sch Chem & Chem Engn, Hefei 230009, Anhui, Peoples R China;

    Hefei Univ Technol, Sch Chem & Chem Engn, Hefei 230009, Anhui, Peoples R China;

    Hefei Univ Technol, Sch Chem & Chem Engn, Hefei 230009, Anhui, Peoples R China;

    Hefei Univ Technol, Sch Chem & Chem Engn, Hefei 230009, Anhui, Peoples R China;

    Hefei Univ Technol, Sch Chem & Chem Engn, Hefei 230009, Anhui, Peoples R 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

    carbon layer; F-N co-doping TiO2; UV-Vis photodegradation; ZnFe2O4;

    机译：碳层;F-N共掺杂TiO2;紫外可见光降解;ZnFe2O4;

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