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Effect of the Acidity on the Morphology and Composition of Nano-TiO2/ Cu Particles

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Abstract:

Nano-TiO2/micro-Cu composite particles were prepared by peptization method using Ti(OBu)4 and SnCl2•2H2O as the raw materials. The effect of the content of HNO3 on the morphology and composition was investigated. The results showed that when the mole ratio of HNO3 and Ti(OBu)4 was 0.5:1, about 100nm TiO2 of amorphous phase grew on the surface of Cu forming strawberry like particles. When the mole ratio of HNO3 and Ti(OBu)4 was 1:1, Cu powders were coated with TiO2 crystals of several nanometers in size, meanwhile particles of several microns in size was absorbed on the Cu surface, which can be easily removed by water cleaning. The possible mechanism was discussed in the end.

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Periodical:

Advanced Materials Research (Volume 177)

Pages:

45-48

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.177.45

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Online since:

December 2010

Authors:

Shi Guo Du, Jun Yan, Bin Wang, Hai Ping Cui

Keywords:

Acidity, Composite Particle, Micro-Cu, Nano-TiO2

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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