分级介孔结构组成的ZnO微球及光催化性能

doi:10.3724/SP.J.1077.2013.12623

无机材料学报 ›› 2013, Vol. 28 ›› Issue (8): 875-879.DOI: 10.3724/SP.J.1077.2013.12623 CSTR: 32189.14.SP.J.1077.2013.12623

分级介孔结构组成的ZnO微球及光催化性能

刘文魁¹, 周伟昌², 张清林¹, 潘安练¹, 庄秀娟¹, 万强¹

(1. 湖南大学微纳结构物理与应用技术湖南省重点实验室, 长沙 410082; 2. 湖南师范大学物理与信息科学学院, 长沙 410006)

收稿日期:2012-10-18 修回日期:2012-12-17 出版日期:2013-08-20 网络出版日期:2013-07-15
作者简介:刘文魁(1984–), 女, 硕士研究生. E-mail: kuikuiliu@126.com
基金资助:
国家自然科学基金(20903038, 90923014, 10974050)

Preparation and Photocatalytic Property of the Hierarchical Mesoporous ZnO Microspheres

LIU Wen-Kui¹, ZHOU Wei-Chang², ZHANG Qing-Lin¹, PAN An-Lian¹, ZHUANG Xiu-Juan¹, WAN Qiang¹

(1. Key Lab for Micro-Nano Physics and Technologies of Hunan Province, Hunan University, Changsha 410082, China; 2. Instifute of Physics and Information Science, Hunan Normal University, Changsha 410006, China)

Received:2012-10-18 Revised:2012-12-17 Published:2013-08-20 Online:2013-07-15
About author:LIU Wen-Kui. E-mail: kuikuiliu@126.com
Supported by:
National Natural Science Foundation of China(20903038, 90923014, 10974050)

摘要/Abstract

摘要： 以硝酸锌、脲素及酒石酸为反应物, 采用水热法制备碱式碳酸锌前驱体微球, 通过煅烧前驱体制备了介孔氧化锌微球。通过扫描电子显微镜(SEM)可以观察到, 氧化锌微球的直径约为2~4 μm, 由大量厚度约为10 nm的介孔纳米片组装而成。X 射线衍射(XRD)和透射电镜(TEM)结果表明: ZnO微球为六方纤锌矿结构, 并结晶较好。比表面积测试(BET)表明ZnO微球为介孔材料, 孔径为20~50 nm, ZnO微球比表面积约为29.8 m²/g。以亚甲基蓝为目标降解物, 对介孔氧化锌微球进行了光催化降解实验。实验结果表明, 所合成的介孔ZnO微球对亚甲基蓝的光催化性能较好。

关键词: ZnO微球, 介孔, 水热合成, 分级结构, 光催化

Abstract: The zinc hydroxide carbonate (ZHC) precursor was synthesized by hydrothermal method in a autoclave using zinc nitrate hexahydrate, urea and tartaric acid as the source materials. Hierarchical porous ZnO microspheres have been successfully synthesized by calcining the microspheric ZHC. The result of scanning electron microscope (SEM) shows that the as-prepared ZnO microspheres with a diameter between 2-4 μm. The microspheres are assembled by numerous porous nanosheets which have the uniform thickness about 10 nm. The hierarchical ZnO microspheres were further charactered by X-ray diffraction (XRD) and transmission electron microscope (TEM), the results clearly show that the ZnO microspheres exhibit a typical wurtzite structure and are well crystallized. Brunauer-Emmett-Teller(BET) confirms that the ZnO microspheres are hierarchical mesoporous structures, the diameter of mesoporous on the nanosheets are in the range of 20-50 nm. The specific surface area of the ZnO microshperes is about 29.8 m2/g. The photocatalytic activity of the ZnO microspheres was evaluated by photode-gradation reaction of methylene blue (MB). The results show that the hierarchical porous ZnO microspheres exhibit high photocatalytic activity.

Key words: ZnO microsphere, mesoporous, hydrothermal method, hierarchical structure, photocatalytic

中图分类号:

TB383

刘文魁, 周伟昌, 张清林, 潘安练, 庄秀娟, 万强. 分级介孔结构组成的ZnO微球及光催化性能[J]. 无机材料学报, 2013, 28(8): 875-879.

LIU Wen-Kui, ZHOU Wei-Chang, ZHANG Qing-Lin, PAN An-Lian, ZHUANG Xiu-Juan, WAN Qiang. Preparation and Photocatalytic Property of the Hierarchical Mesoporous ZnO Microspheres[J]. Journal of Inorganic Materials, 2013, 28(8): 875-879.

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分级介孔结构组成的ZnO微球及光催化性能

Preparation and Photocatalytic Property of the Hierarchical Mesoporous ZnO Microspheres

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