| g-C_3N_4负载磷钨酸的表征及光催化性能 |
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| 作者单位： | ;1.新乡学院能源与燃料研究所;2.新乡学院生命科学技术学院;3.新乡学院化学化工学院 |
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| 摘 要： | 采用超声——浸渍法制备了磷钨酸/g-C_3N_4(PWCN)复合光催化剂,并利用XRD,IR及UV-Vis吸收光谱对其进行了表征.考察了其在紫外光和太阳光照射下催化降解甲基橙的性能,并对其重复使用性、降解动力学及光催化机理进行研究.结果表明:复合材料的光响应与PW相比发生红移,且吸光值增大.在接受紫外光和可见光照射2h条件下,该复合物光催化剂对甲基橙的光降解率分别达到96.81%和80.24%,同时具有良好的循环稳定性.PW对g-C_3N_4光生电子的捕获是提高复合物催化活性的主要原因.
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| 关 键 词： | 磷钨酸/g-C_3N_4 光催化 甲基橙 |
Characterization and Photocatalytic Performance of PW Loaded on g-C_3N_4 |
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| Affiliation: | ,Institute of Energy and Fuel,Xinxiang University,College of life science and technology,Xinxiang University,College of chemistry and chemical engineering,Xinxiang University |
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| Abstract: | Phosphotungstic acid(PW)loaded g-C_3N_4composite(PWCN)was prepared by ultrasonication-impregnation method and characterized by XRD、IR and UV-Vis absorption spectroscopy.Photocatalytic activity of the afforded material were investigated by photodegradation of methyl orange(MO)under UV and UV-vis irradiations.The photocatalysis reusability,photodegradation kinetics and photocatalytic mechanism were also studied.Results have shown that the light response range and the absorbance of the PWCN composite can be red-shifted and enhanced,respectively relative PW.Under irradiations of UV and UV-vis light for 2h,the photodegradation ratios of PWCN photocatalyst achieve 96.81 and 80.24%,respectively.Simultaneously,good photocatalytic stability can also be maintained.The capturing of photogenerated electrons of g-C_3N_4 by PW is the main reason responsible for the enhanced photocatalytic activity. |
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| Keywords: | PWCN photocatalysis methyl orange |
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