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Growth of carbon nanotube on micro-sized Al2O3 particle and its application to adsorption of metal ions

Published online by Cambridge University Press:  01 May 2006

Shu-Huei Hsieh*
Affiliation:
Graduate School of Engineering Science and Technology, National Yunlin University of Science and Technology, Douliou, Yulin, Taiwan 604;and Department of Materials Science and Engineering, National Formosa University, Douliou, Yunlin, Taiwan 640
Jao-Jia Horng
Affiliation:
Department of Safety, Health, and Environmental Engineering, National Yunlin University of Science and Technology, Douliou, Yunlin, Taiwan 640
Cheng-Kuo Tsai
Affiliation:
Department of Safety, Health, and Environmental Engineering, National Yunlin University of Science and Technology, Douliou, Yunlin, Taiwan 640
*
a) Address all correspondence to this author. e-mail: [email protected]
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Abstract

Carbon nanotubes (CNTs) were grown on micron-sized Al2O3 particles in an atmosphere of methane and hydrogen at 700 °C under the catalysis of Fe–Ni nanoparticles that had been deposited on the surface of Al2O3 particles by an electroless plating technique. The individual and competitive adsorption capacities of Pb2+, Cu2+, and Cd2+ from aqueous solution by CNTs on Al2O3 particles were studied. The results showed that the adsorption behavior of these metal ions by as-grown CNTs on Al2O3 particles is in good agreement with the Langmuir adsorption model. The maximum individual adsorption capacities of Pb2+, Cu2+, and Cd2+ from water by as-grown CNTs on Al2O3 particles are 62.50, 27.03, and 9.30 mg/g, respectively. The CNTs on Al2O3 particles have promising potential applications in removing soluble heavy metals from aqueous solutions.

Type
Articles
Copyright
Copyright © Materials Research Society 2006

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