Issue 31, 2009

Preparation of TiO2/SiO2 composite fiber by thermal decomposition of polycarbosilane–tetrabutyl titanate hybrid precursor

Abstract

A hybrid polymer as the precursor for TiO2/SiO2 composite fibers was prepared by blending polycarbosilane (PCS) and tetrabutyl titanate, named as PCST, which contains unreacted organic tetrabutyl titanate compound. The PCST was characterized by FT-IR, TGA and NMR (1H, 13C and 29Si). The results showed that the PCST could be described as a part dispersion of Ti(OC4H9)4 groups in the PCS chain matrix. The TiO2/SiO2 composite fibers were manufactured by melt-spinning PCST, maturing and curing the resulting fibers in air, followed by a final pyrolysis at 1200 °C in air. Based on the XRD, EPMA, EDS, SEM and HRTEM measurements, the TiO2/SiO2 fibers were made up of anatase-TiO2 nanocrystallites with a mean size of ∼10 nm and in the amorphous silica phase.

Graphical abstract: Preparation of TiO2/SiO2 composite fiber by thermal decomposition of polycarbosilane–tetrabutyl titanate hybrid precursor

Article information

Article type
Paper
Submitted
24 Mar 2009
Accepted
14 May 2009
First published
22 Jun 2009

J. Mater. Chem., 2009,19, 5637-5642

Preparation of TiO2/SiO2 composite fiber by thermal decomposition of polycarbosilane–tetrabutyl titanate hybrid precursor

Y. Yu, Y. Guo, X. Cheng and Y. Zhang, J. Mater. Chem., 2009, 19, 5637 DOI: 10.1039/B905860E

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Spotlight

Advertisements