Surface characteristics and photoactivity of silver-modified palygorskite clays coated with nanosized titanium dioxide particles
- Department of Materials and Engineering, Hefei University of Technology, Tunxi Road 193 Hefei, Anhui Province 230009 (China)
This paper presents the results of a study in which nanosized titanium dioxide (TiO{sub 2}) crystal particles were coated onto the surface of palygorskite fibrous clay which had been modified by silver ions using titanium tetrachloride as a precursor. Coated TiO{sub 2} particles with the anatase structure were formed after calcining at 400 deg. C for 2 h in air. Various analytical techniques were used to characterize the surface properties of titanium dioxide particles on the palygorskite. Transmission electron microscopy (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) analyses showed that TiO{sub 2} particles were supported on the surface of the palygorskite clays and their size was in the range of 3-6 nm. The titanium oxide coatings were found to be very active for the photocatalytic decomposition of methylene blue.
- OSTI ID:
- 21003538
- Journal Information:
- Materials Characterization, Vol. 58, Issue 3; Other Information: DOI: 10.1016/j.matchar.2006.04.024; PII: S1044-5803(06)00124-0; Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved; Country of input: International Atomic Energy Agency (IAEA); ISSN 1044-5803
- Country of Publication:
- United States
- Language:
- English
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