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MECHANO-CHEMICAL PREPARATION OF POWDER QUARTZ/TiO2COMPOSITE PARTICLES

Author

Listed:
  • GAO-XIANG DU

    (School of Material Sciences and Technology, China University of Geosciences, Beijing 100083, P. R. China)

  • HAO HE

    (School of Material Sciences and Technology, China University of Geosciences, Beijing 100083, P. R. China)

  • LI-BING LIAO

    (School of Material Sciences and Technology, China University of Geosciences, Beijing 100083, P. R. China)

  • LI-JUAN WANG

    (School of Material Sciences and Technology, China University of Geosciences, Beijing 100083, P. R. China)

Abstract

Titanium dioxide pigment is a white pigment of high performance. However, its production could cause severe environmental and resource problems. In this paper, powder quartz/TiO2composite particles (PQ/TCP), a type of core (powder quartz)–shell(TiO2) composite powder, were prepared by a mechano-chemical method. The pigment properties of PQ/TCP and the mechanism of the mechano-chemical reaction between quartz andTiO2were investigated. Orthogonal analyses of experimental vairables showed optimal pigment characteristics of PQ/TCP under the following conditions: 4 h of activation for powder quartz, mixing/grinding at 1000 rpm for 1 h, with a mixing slurry made of 50% powder quartz and 0.4% dispersant. Powder quartz was evenly coated byTiO2and theSi–O–Tibond was formed between powder quartz andTiO2in PQ/TCP as revealed by FTIR analyses and confirmed by surface thermodynamic calculation.

Suggested Citation

  • Gao-Xiang Du & Hao He & Li-Bing Liao & Li-Juan Wang, 2013. "MECHANO-CHEMICAL PREPARATION OF POWDER QUARTZ/TiO2COMPOSITE PARTICLES," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 20(02), pages 1-7.
    • Handle: RePEc:wsi:srlxxx:v:20:y:2013:i:02:n:s0218625x13500169
    DOI: 10.1142/S0218625X13500169
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