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首页> 外文期刊>Applied Surface Science >Design of H_3PW_(12)O_(40)TiO_2 nano-photocatalyst for efficient photocatalysis under simulated sunlight irradiation
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Design of H_3PW_(12)O_(40)TiO_2 nano-photocatalyst for efficient photocatalysis under simulated sunlight irradiation

机译：模拟太阳光下H_3PW_（12）O_（40）TiO_2纳米光催化剂的有效光催化设计

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摘要

(H_3PW_(12)O_(40)TiO_2) nano-photocatalyst was successfully synthesized through a modified sol-gel-hydrothermal method. The X-ray diffraction (XRD) patterns, Fourier transform infrared (FT-IR) spectra, UV-vis diffuse reflectance spectrum (UV-vis DRS), and N_2 adsorption-desorption isotherms were characterized respectively to investigate the physical and chemical properties of prepared catalysts. Under simulated sunlight (320nm<λ<780nm) irradiation, the degradation of fuchsin acid, malachite green and p-nitrophenol (PNP) were carried out to evaluate the photocatalytic activity of PW_(12)/TiO_2. The results showed that the pollutants degradation followed first-order kinetics, and the kinetic constants of photocatalytic degradation of fuchsin acid, malachite green and PNP were 2.82,4.66, and 3.48 times as great as that using pristine TiO_2, respectively. The high pollutants degradation efficiency was ascribed to the synergistic effect between H_3PW_(12)O_(40) and TiO_2, which resulted in enhanced quantum efficiency and high light harvesting efficiency. We believe this work could provide new insights into the fabrication of photocatalyst with high photocatalytic performance and facilitate their practical application in environmental issues.
机译：通过改进的溶胶-凝胶-水热法成功合成了（H_3PW_（12）O_（40）TiO_2）纳米光催化剂。通过X射线衍射（XRD）图谱，傅立叶变换红外（FT-IR）光谱，紫外可见漫反射光谱（紫外可见DRS）和N_2吸附-解吸等温线进行表征，考察了甲醇的理化性质。制备的催化剂。在320nm <λ<780nm的模拟太阳光下，进行了品红酸，孔雀石绿和对硝基苯酚（PNP）的降解，评价了PW_（12）/ TiO_2的光催化活性。结果表明，污染物降解遵循一级动力学规律，品红酸，孔雀石绿和PNP的光催化降解动力学常数分别为纯TiO_2的2.82倍，4.66倍和3.48倍。 H_3PW_（12）O_（40）和TiO_2之间的协同作用归因于污染物的高降解效率，从而提高了量子效率和光捕获效率。我们相信这项工作可以为具有高光催化性能的光催化剂的制备提供新的见解，并促进其在环境问题中的实际应用。

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  • 来源
    《Applied Surface Science》 |2013年第ptab期|616-624|共9页
  • 作者

    Kun Zhao; Ying Lu; Nan Lu; Yahui Zhao; Xing Yuan; Hao Zhang; Lianghui Teng; Fu Li;

  • 作者单位

    State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun, 130024, China;

    State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun, 130024, China;

    State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun, 130024, China;

    State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun, 130024, China;

    State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun, 130024, China;

    State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun, 130024, China;

    State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun, 130024, China;

    College of Science, Jiamusi University, Jiamusi, 154007, China;

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  • 正文语种 eng
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  • 关键词

    H_3PW_(12)O_(40)/TiO_2 nano-photocatalyst; Fuchsin acid; Malachite green; Quantum efficiency; Light harvesting efficiency; Photocatalytic activity;

    机译：H_3PW_（12）O_（40）/ TiO_2纳米光催化剂;品红酸;孔雀石绿;量子效率;采光效率;光催化活性;

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