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首页> 外文期刊>RSC Advances >Preparation of S-N co-doped CoFe2O4@rGO@TiO2 nanoparticles and their superior UV-Vis light photocatalytic activities
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Preparation of S-N co-doped CoFe2O4@rGO@TiO2 nanoparticles and their superior UV-Vis light photocatalytic activities

机译：S-N共掺杂CoFe2O4 @ rgo @ TiO2纳米粒子的制备及其高级紫外线光光催化活性

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摘要

A S-N co-doped CoFe2O4@ rGO@ TiO2 (CFGT-S/N) nanocomposite was successfully synthesized via a facile vapor-thermal method. XRD, XPS, FT-IR and FETEM results confirmed that N and S were codoped into the lattice of TiO2. Photocatalytic tests indicated that CFGT-S/N exhibited excellent UV-Vis photocatalytic activity for decompositions of different organic dyes, including methyl orange (MO), rhodamine B (RhB) and methylene blue (MB). Particularly, the photocatalytic degradation rate of MO was about 33% higher than that when using P25 under visible light irradiation. The higher UV-Vis light photocatalytic activity of CFGT-S/N can be attributed to the synergetic effects of the strong absorption of visible light, the narrow band gap, improved separation of photo-generated electron/hole pairs, and the enhancement of the enrichment of pollutant dye molecules by S, N co-doping, CoFe2O4 and rGO. Moreover, this photocatalyst was superparamagnetic, which enables it to be easily recovered by an external magnetic field, and maintained stable photocatalytic efficiency over five cycles. Hence, CFGT-S/N with its highly efficient, recoverable and stable photocatalytic properties shows great potential for environmental treatment.
机译：A S-N共掺杂铁酸钴@ RGO @二氧化钛（CFGT-S / N）纳米复合材料成功地合成通过一个浅显蒸气热法。 XRD，XPS，FT-IR和FETEM结果证实，N和S被共掺杂到TiO 2的晶格中。光催化试验表明，CFGT-S / N表现出优异的紫外 - 可见光的光催化活性为不同的有机染料，包括甲基橙（MO），若丹明B（罗丹明B）和亚甲基蓝（MB）的分解。特别地，MO的光催化降解速率为约比可见光照射下使用P25时，较高的33％。较高紫外 - 可见的CFGT-S / N的光催化活性可以归因于可见光时，窄的带隙，改进的光生电子/空穴对分离的强吸收的协同效应，以及增强的通过S，N共掺杂，铁酸钴和RGO污染物染料分子的富集。此外，该光催化剂是超顺磁性的，这使得它能够通过一个外部磁场能够容易地回收，并且保持稳定的光催化效率超过五个周期。因此，与环境处理其高效，可采且稳定的光催化性能显示出巨大的潜力CFGT-S / N。

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  • 来源
    《RSC Advances》 |2019年第11期|共11页
  • 作者

    Wei Fengyu; Wang Hui; Ran Wei; Liu Tao; Liu Xueting;

  • 作者单位

    Hefei Univ Technol Sch Chem &

    Chem Engn Anhui Prov Key Lab Adv Catalyt Mat &

    React Engn Hefei 230009 Anhui Peoples R China;

    Hefei Univ Technol Sch Chem &

    Chem Engn Anhui Prov Key Lab Adv Catalyt Mat &

    React Engn Hefei 230009 Anhui Peoples R China;

    Hefei Univ Technol Sch Chem &

    Chem Engn Anhui Prov Key Lab Adv Catalyt Mat &

    React Engn Hefei 230009 Anhui Peoples R China;

    Hefei Univ Technol Sch Chem &

    Chem Engn Anhui Prov Key Lab Adv Catalyt Mat &

    React Engn Hefei 230009 Anhui Peoples R China;

    Hefei Univ Technol Sch Chem &

    Chem Engn Anhui Prov Key Lab Adv Catalyt Mat &

    React Engn Hefei 230009 Anhui Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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