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首页> 外文期刊>Journal of Materials Research >Hydrothermal synthesis of 3D Ba_5Ta_4O_(15) flower-like microsphere photocatalyst with high photocatalytic properties
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Hydrothermal synthesis of 3D Ba_5Ta_4O_(15) flower-like microsphere photocatalyst with high photocatalytic properties

机译：水热合成高光催化性能的3D Ba_5Ta_4O_（15）花状微球光催化剂

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摘要

A novel and efficient photocatalyst of three dimensional (3D) Ba_5Ta_4O_(15) flower-like microsphere was synthesized via an alkaline etch under hydrothermal condition. The influence of reaction temperature, reaction time, and alkaline concentration on the morphology were investigated for the 3D Ba_5Ta_4O_(15) flower-like microsphere photocatalyst. The morphology and structure of the 3D Ba_5Ta_4O_(15) were characterized using x-ray diffraction, scanning electron microscope, transmission electron microscope, and high-resolution transmission electron microscopy. The results show that the elegant flower-like structure was composed of Ba_5Ta_4O_(15) nanosheets. The 3D Ba_5Ta_4O_(15) flower-like microspheres show a higher photocatalytic activity in the degradation of methylene blue under ultraviolet light than the bulk Ba_5Ta_4O_(15) microcrystal by the solid-state-reacted synthesized. The UV-vis diffuse reflectance spectra, photoluminescence spectra, volumetric adsorption method, and photocurrent response of the Ba_5Ta_4O_(15) photocatalyst were characterized indicated that the higher photocatalytic activity of flower-like Ba_5Ta_4O_(15) microspheres was due to the high crystallinity, large surface area and the effective charge separation.
机译：在水热条件下，通过碱蚀法合成了新型高效的三维（3D）Ba_5Ta_4O_（15）花状微球光催化剂。研究了3D Ba_5Ta_4O_（15）花状微球光催化剂的反应温度，反应时间和碱浓度对形态的影响。使用X射线衍射，扫描电子显微镜，透射电子显微镜和高分辨率透射电子显微镜对3D Ba_5Ta_4O_（15）的形貌和结构进行了表征。结果表明，优雅的花状结构由Ba_5Ta_4O_（15）纳米片组成。 3D Ba_5Ta_4O_（15）花状微球在固态光合成下比紫外团簇Ba_5Ta_4O_（15）微晶在紫外光下对亚甲基蓝的降解具有更高的光催化活性。对Ba_5Ta_4O_（15）光催化剂的紫外可见漫反射光谱，光致发光光谱，体积吸附方法和光电流响应进行了表征，表明花状Ba_5Ta_4O_（15）微球的较高光催化活性是由于其高结晶度，大表面积和有效电荷分离。

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  • 来源
    《Journal of Materials Research》 |2016年第17期|2640-2648|共9页
  • 作者

    Dongbo Xu; Weidong Shi; Chao Xu; Songbo Yang; Hongye Bai; Chengjie Song; Biyi Chen;

  • 作者单位

    School of Energy and Power Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China;

    School of Energy and Power Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China;

    School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China;

    School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China;

    School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China;

    School of Environmental and Safety Engineering, Changzhou University, Changzhou, 213164, People's Republic of China;

    School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of 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);
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