Preparation, characterization, and photocatalytic applications of MWCNTs/TiO₂ composite

authored by

A.M. Kamil, F.H. Hussein, A.F. Halbus, D.W. Bahnemann

Abstract

The multiwall carbon nanotubes (MWCNTs)/titanium dioxide (P25) composite in different ratios was prepared using simple evaporation and drying process. The composite was characterized by Raman spectroscopy, X-ray diffraction (XRD), UV-visible diffuse reflectance spectroscopy, and scanning electron microscopy (SEM). The photocatalytic activity of this composite was investigated using degradation of the Bismarck brown R dye (BBR). An optimal MWCNTs/TiO

₂ ratio of 0.5% (w/w) was found to achieve the maximum rate of BBR degradation. It was observed that the composite exhibits enhanced photocatalytic activity compared with TiO

₂. The enhancement in photocatalytic activity performance of the MWCNTs/P25 composite is explained in terms of recombination of photogenerated electron-hole pairs. In addition, MWCNTs act as a dispersing support to control the morphology of TiO

₂ particles in the MWCNTs/TiO

₂ composite.

Organisation(s)

Institute of Technical Chemistry

Type

Article

Journal

International Journal of Photoenergy

Volume

2014

ISSN

1110-662X

Publication date

28.08.2014

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

General Chemistry, Atomic and Molecular Physics, and Optics, General Materials Science, Renewable Energy, Sustainability and the Environment

Sustainable Development Goals

SDG 7 - Affordable and Clean Energy

Electronic version(s)

https://doi.org/10.1155/2014/475713 (Access: Open)