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首页> 外文期刊>Applied Surface Science >In situ loading of CuS nanoflowers on rutile TiO2 surface and their improved photocatalytic performance
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In situ loading of CuS nanoflowers on rutile TiO2 surface and their improved photocatalytic performance

机译：金红石型TiO2表面原位负载CuS纳米花及其改善的光催化性能

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摘要

CuS nanoflowers, fabricated by an element-direct-reaction route using copper and sulfur powder, were loaded on rutile TiO2 (CuS/TiO2) at low temperature. CuS/TiO2 composites were utilized as the photocatalysts for the degradation of Methylene Blue (MB) and 4-chlorophenol (4-CP). X-ray diffraction (XRD), UV Raman spectroscopy, transmission electron microscopy (TEM), XPS, and UV-visible diffuse reflectance spectra were used to characterize the crystalline phase, morphology, particle size, and the optical properties of CuS/TiO2 samples. It is found that CuS/TiO2 photocatalyst, which CuS are loaded on the surface of rutile TiO2, exhibited enhanced photocatalytic degradation of MB (or 4-CP) than TiO2 or CuS. This indicates that CuS can enhance effectively the photocatalytic activity of rutile TiO2 by forming heterojunction between CuS and rutile TiO2, which is confirmed by photoluminescence (PL) spectra and TEM. Moreover, CuS content has a significant influence on photocatalytic activity and 2 wt% CuS/TiO2 showed the maximum photocatalytic activity for degradation of MB. (C) 2016 Elsevier B.V. All rights reserved.
机译：将使用铜和硫粉通过元素直接反应路线制造的CuS纳米花在低温下加载到金红石TiO2（CuS / TiO2）上。 CuS / TiO2复合材料用作降解亚甲基蓝（MB）和4-氯苯酚（4-CP）的光催化剂。使用X射线衍射（XRD），紫外拉曼光谱，透射电子显微镜（TEM），XPS和紫外可见漫反射光谱来表征CuS / TiO2样品的晶相，形态，粒径和光学性质。发现将CuS负载在金红石TiO 2表面上的CuS / TiO 2光催化剂显示出比TiO 2或CuS增强的MB（或4-CP）光催化降解。这表明CuS可以通过在CuS和金红石TiO2之间形成异质结来有效增强金红石TiO2的光催化活性，这已通过光致发光（PL）光谱和TEM证实。此外，CuS含量对光催化活性有显着影响，2 wt％CuS / TiO2对MB的降解表现出最大的光催化活性。 （C）2016 Elsevier B.V.保留所有权利。

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  • 来源
    《Applied Surface Science》 |2016年第may1期|312-319|共8页
  • 作者

    Lu Y. Y.; Zhang Y. Y.; Zhang J.; Shi Y.; Li Z.; Feng Z. C.; Li C.;

  • 作者单位

    Liaoning Shihua Univ, Coll Chem Chem Engn & Environm Engn, Fushun 113001, Liaoning, Peoples R China;

    Liaoning Shihua Univ, Coll Chem Chem Engn & Environm Engn, Fushun 113001, Liaoning, Peoples R China;

    Liaoning Shihua Univ, Coll Chem Chem Engn & Environm Engn, Fushun 113001, Liaoning, Peoples R China;

    Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Photochem Convers & Optoelect Mat, Beijing 100190, Peoples R China;

    Chinese Acad Sci, Tech Inst Phys & Chem, Key Lab Photochem Convers & Optoelect Mat, Beijing 100190, Peoples R China;

    Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China;

    Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China;

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  • 正文语种 eng
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  • 关键词

    CuS; TiO2; Photocatalysis; Heterojunction; Methylene Blue; 4-Chlorophenol;

    机译：CuS;TiO2;光催化;异质结;亚甲基蓝;4-氯苯酚;

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