Preparation of TiO2 photocatalyst anchored on activated carbon fibers and its photodegradation of methylene blue--颗粒学报PARTICUOLOGY

Fu, P., Luan, Y., & Dai, X. (2004). Preparation of TiO2 photocatalyst anchored on activated carbon fibers and its photodegradation of methylene blue. China Particuology, 2(2), 76-80. https://doi.org/10.1016/S1672-2515(07)60027-X

Preparation of TiO₂ photocatalyst anchored on activated carbon fibers and its photodegradation of methylene blue

Pingfeng Fu ^*, Yong Luan, Xuegang Dai

Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100080, P. R. China

10.1016/S1672-2515(07)60027-X

Volume 2, Issue 2, April 2004, Pages 76-80

Received 25 December 2003, Accepted 5 February 2004, Available online 27 November 2007.

E-mail: fupingfeng@home.ipe.ac.cn

Highlights

Abstract

TiO₂ particulate photocatalyst anchored on activated carbon fibers (ACFs) was prepared by a molecular adsorption-deposition method. The TiO₂ particles deposited on the carbon fibers formed a coating of about 100 nm in thickness. The photocatalyst prepared was characterized by means of SEM, EDS, XRD and UV-vis adsorption spectroscopy. Anatase-type TiO₂ was uniquely developed, and the micrographic structure of ACFs was not damaged during preparation. The roomy space between adjacent carbon fibers could allow UV-light to penetrate into the felt-form photocatalyst to a certain depth, so that a three dimensional environment was formed for the photocatalytic reaction. Such TiO₂/ACFs photocatalyst exhibited its photocatalytic reactivity in photodegradation of concentrated methylene blue (MB) solutions. The MB molecules in the bulk solutions was supposed to be condensed around TiO₂ particles by adsorption by ACFs. Therefore, the photocatalyst possesses the combined effect of adsorption by activated carbon fibers and photocatalytic reactivity of anatase-type TiO₂ on MB photodegradation.

Graphical abstract

Keywords

titanium dioxide; photocatalyst; activated carbon fibers; preparation; methylene blue; photodegradation

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