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首页> 外文期刊>Journal of Materials Engineering and Performance >Synthesis of Hierarchical Porous Zn-Doped SnO2 Spheres and Their Photocatalytic Properties
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Synthesis of Hierarchical Porous Zn-Doped SnO2 Spheres and Their Photocatalytic Properties

机译：Zn掺杂SnO2多孔球的合成及其光催化性能

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摘要

The undoped and Zn-doped SnO2 products have been synthesized by a solvothermal method. With the Zn doping concentration changing from 0 to 20 mol%, the SnO2 morphology evolved from aggregated nanoprisms into hierarchical porous spheres. The products were characterized by x-ray diffraction, Raman spectroscopy, field emission scanning electron microscopy, energy-dispersive spectroscopy, transmission electron microscopy, selected area electron diffraction, UV-Vis absorption spectra, and photoluminescence spectra analysis. The results showed that Zn doping concentration significantly influenced on the microstructure, size, morphology, and optical property of the SnO2 products. Furthermore, the influence of the doping effect on the photocatalytic performance of the as-prepared SnO2 products was compared. The results revealed that 20 mol% Zn-doped SnO2 with hierarchical porous spheres exhibited excellent efficiency of photocatalytic activity, which could be attributed to their abundant oxygen vacancies, large specific surface area, and porous structure.
机译：已通过溶剂热法合成了未掺杂和掺杂Zn的SnO2。随着Zn掺杂浓度从0到20 mol％的变化，SnO2的形态从聚集的纳米棱镜演变为分层的多孔球体。通过X射线衍射，拉曼光谱，场发射扫描电子显微镜，能量分散光谱，透射电子显微镜，选择区域电子衍射，UV-Vis吸收光谱和光致发光光谱分析来表征产物。结果表明，Zn掺杂浓度对SnO2产物的微观结构，尺寸，形貌和光学性能有显着影响。此外，比较了掺杂效应对所制备的SnO 2产物的光催化性能的影响。结果表明，具有分层多孔球的20 mol％Zn掺杂SnO2表现出优异的光催化活性效率，这可以归因于其丰富的氧空位，大的比表面积和多孔结构。

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