Preparation of Nanocrystalline ZnO on the Surface of Kaolinite by Microwave Heating and Mechanism Analyses for Its Formation

Chem. J. Chinese Universities

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Preparation of Nanocrystalline ZnO on the Surface of Kaolinite by Microwave Heating and Mechanism Analyses for Its Formation

ZHANG Xian-Ru, GU Xiao-Wen, SUN Jia, XU Zheng

Research Institute of Microelectronic Materials, School of Material Science and Engineering, Tongji University, Shanghai 200092, China

Received:2005-09-21 Revised:1900-01-01 Online:2006-08-10 Published:2006-08-10
Contact: XU Zheng

Abstract

Abstract: ZnO nano-powders was prepared on the surface of exfoliated kaolinite(with the precursor solution of ZnAc₂·2H₂O and ammonia) via microwave heating hydrolysis method, the nanocrystalline ZnO was characterized by using XRD, FTIR, TEM and their formation mechanism was proposed. The results indicate that the products are composed of hexagonal-phased ZnO. The morphology of ZnO is rod-like without exfoliated kaolinite(length is 100—200 nm, diameter is 50—80 nm) as well as is cluster whisker-like in the presence of exfoliated kaolinite(length is 200—350 nm, diameter is 40—60 nm). The infrared absorption of the latter was enhanced apparently. The formation mechanism of the nanocrystalline ZnO synthesized by this method was also suggested.

Key words: Microwave, Kaolinite, ZnO, Cluster whisker

CLC Number:

O643
TB383

TrendMD:

ZHANG Xian-Ru, GU Xiao-Wen, SUN Jia, XU Zheng. Preparation of Nanocrystalline ZnO on the Surface of Kaolinite by Microwave Heating and Mechanism Analyses for Its Formation[J]. Chem. J. Chinese Universities, doi: .

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Preparation of Nanocrystalline ZnO on the Surface of Kaolinite by Microwave Heating and Mechanism Analyses for Its Formation

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