Effect of peptisation on nanosized TiO₂ particles prepared by hydrolysis from metatitanic acid

Authors: Zhang, R.B.; Gao, L.

Source: British Ceramic Transactions, Volume 100, Number 5, May 2001 , pp. 214-217(4)

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Abstract:

Nanocrystalline TiO₂ particles were prepared by three methods: direct hydrolysis from metatitanic acid dissolved in the presence of concentrated sulphuric acid; hydrolysis of titanium sulphate (TiSO₄); and from powders obtained by peptising precipitates with hydrochloric acid and tetraethylammonium hydroxide to form crystal phases at lower temperatures. Samples were characterised by transmission electron microscopy, X-ray diffractometry, and Brunauer–Emmitt–Teller surface area analysis. In the photodegradation of anionic sodium dodecylbenzenesulphonate surfactant, nanosized TiO₂ with mixed anatase and rutile phases was found to show improved photocatalytic properties over commercial P-25 titania powder.

Document Type: Regular Paper

DOI: http://dx.doi.org/10.1179/096797801681486

Affiliations: The State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China. (liangaoc@online.sh.cn)

Publication date: 2001-05-01

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