Hierarchical WO_3 Hollow Shells: Dendrite, Sphere, Dumbbell, and Their Photocatalytic Properties

Di Chen; Jinhua Ye

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Hierarchical WO_3 Hollow Shells: Dendrite, Sphere, Dumbbell, and Their Photocatalytic Properties

机译：分层WO_3空心壳：树突，球体，哑铃及其光催化性能

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In this work, hierarchical WO_3 hollow shells: dendrites, spheres and dumbbells have been successfully synthesized by simply calcining the acid-treated PbWO_4 and SrWO_4 as precursors at 500 ℃ for 2 h. These hollow structures were characterized using X-ray diffraction, scanning and transmission electron microscopies, Brunauer-Emmet-Teller surface area and diffuse reflectance spectroscopy, respectively. Possible formation mechanisms for hollow WO_3 shells consisted of tiny nanoplatelets were investigated in detail. Comparing with commercial WO_3 particles, all the obtained hollow shells with larger BET surface areas showed enhanced photocatalytic activities for the degradation of organic contaminants under visible light irradiation.

机译：在这项工作中，通过简单地将酸处理过的PbWO_4和SrWO_4作为前体在500℃下煅烧2 h，成功地合成了WO_3空心壳：树枝状晶体，球形和哑铃形。这些中空结构分别使用X射线衍射，扫描电子显微镜和透射电子显微镜，Brunauer-Emmet-Teller表面积和漫反射光谱进行了表征。详细研究了由微小纳米片组成的中空WO_3壳的可能形成机理。与商业WO_3颗粒相比，所有获得的具有较大BET表面积的中空壳在可见光照射下均表现出增强的光催化活性，用于降解有机污染物。

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来源
《Advanced Functional Materials》 |2008年第13期|p.1922-1928|共7页
作者
Di Chen; Jinhua Ye;
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International Center for Materials Nanoarchitectonic, Photocatalytic Materials Center, National Institute for Materials Science 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047 (Japan);

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中图分类无线电电子学、电信技术;
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Hierarchical WO_3 Hollow Shells: Dendrite, Sphere, Dumbbell, and Their Photocatalytic Properties

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