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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
chemical engineering
Functionalization of tungsten oxide into MWCNT and its application for sunlight-induced degradation of rhodamine B
Journal of Colloid and Interface Science, Volume 362, No. 2, Year 2011
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Description
A composite of multi-walled carbon nanotube/tungsten oxide (MWCNT/WO 3) has been successfully synthesized. The prepared composite was characterized by X-ray diffraction (XRD), field emission scanning electron microscope (FESEM), high-resolution transmission electron microscopy (HRTEM) and Fourier transform infrared spectroscopy (FTIR). The catalytic activity was investigated by rhodamine B degradation under solar irradiation. The influence of various degradation parameters such as solar illumination time, initial dye concentration, dosage and pH was investigated. It was found that the composite exhibits an enhanced photocatalytic activity as compared with WO 3 and a mechanical mixture of MWCNTs and WO 3. The enhancement in photocatalytic performance of the MWCNT/WO 3 composite has been explained based on adsorption ability and electron transportation as a result of a strong interaction between WO 3 and MWCNTs. Besides, MWCNTs acts as dispersing agent preventing WO 3 from agglomerating during the catalytic process, providing a high active surface area of the catalyst. A reasonable mechanism for the enhanced reactivity was proposed. © 2011 Elsevier Inc.
Authors & Co-Authors
Saleh, Tawfik A.
Saudi Arabia, Dhahran
King Fahd University of Petroleum and Minerals
Gupta, Vinod Kumar
Saudi Arabia, Dhahran
King Fahd University of Petroleum and Minerals
India, Roorkee
Indian Institute of Technology Roorkee
Statistics
Citations: 528
Authors: 2
Affiliations: 2
Identifiers
Doi:
10.1016/j.jcis.2011.06.081
ISSN:
00219797
e-ISSN:
10957103
Research Areas
Environmental