Relation between Potential and Dispersity in the Preparation Processof Nano-scale ZnO

Abstract

Abstract: Nano-scale powders (about 10nm) of ZnO were prepared by chemical method. Also the relation between ζ potential and dispersity of zinc
carbonate hydroxide precursor in the procedure was studied. After being washed, the ζ potential of particles was specially examined. It was found that the ζ potential of particles decreased obviously and closed to its
isoelectric point after being washed by distilled water. This phenomenon certainly caused the aggregation of particles. So in washing process, the 0.1M ammonia was
used instead of distilled water to controll pH value and increase ζ potential. Finally the dispersity of powders was improved.

Key words: ZnO, nano-scale, ζ potential, aggregation, washing

CLC Number:

TF123

LI Qiang,GAO Lian,LUAN Wei-Ling,YAN Dong-Sheng. Relation between Potential and Dispersity in the Preparation Processof Nano-scale ZnO[J]. Journal of Inorganic Materials.

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Relation between Potential and Dispersity in the Preparation Processof Nano-scale ZnO

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