XPS Investigation on Nano-TiO2 Modified by Titanate Coupling Agent

Abstract:

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Nano-TiO2 was modified with a titanate coupling agent, LICA38 [neopentyl (dially) oxy, tri (-dioctyl) pyrophosphate titanate]. X-ray photoelectron spectroscopy (XPS) was used to evaluate the surface characteristics of the bare and the modified nano-TiO2. It was demonstrated that the carbon content of the bare TiO2 is 37.9 atm. %, and that of the modified TiO2 is 47.2 atm. %. Moreover, the density of the -C-H (-C-C) and -C-O groups increases due to modification, and the atomic percentage of C=O and -OH groups reduces. These results indicate that the -C-H (-C-C) and -C-O groups from LICA38 have been introduced to the surface of nano-TiO2 by coupling reaction with the hydroxyl groups.

Info:

Periodical:

Key Engineering Materials (Volumes 368-372)

Edited by:

Wei Pan and Jianghong Gong

Pages:

1477-1479

DOI:

10.4028/www.scientific.net/KEM.368-372.1477

Citation:

D. M. Zhang et al., "XPS Investigation on Nano-TiO2 Modified by Titanate Coupling Agent", Key Engineering Materials, Vols. 368-372, pp. 1477-1479, 2008

Online since:

February 2008

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$35.00

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