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Catalysts 2016, 6(8), 123; doi:10.3390/catal6080123

Specifically Grafting Hematin on MPTS-Coated Carbon Nanotubes for Catalyzing the Oxidation of Aniline

Department of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, China
These authors contributed equally to this work.
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Author to whom correspondence should be addressed.
Academic Editor: Keith Hohn
Received: 26 June 2016 / Revised: 24 July 2016 / Accepted: 1 August 2016 / Published: 16 August 2016
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Abstract

Catalysts supported on nanomaterials have been widely investigated for the treatment of hazardous materials. This work has developed a novel method for grafting hematin on nanomaterials for catalyzing the oxidation of aniline in order to remove aniline from wastewater. Magnetic multi-walled carbon nanotubes (M-MWCNTs) were coated with a layer formed through the hydrolysis and condensation of 3-mercaptopropyltriethoxysilane (MPTS). Hematin was specifically grafted on the MPTS-coated M-MWCNTs through thiol-alkene reaction. Hematin-MPTS-M-MWCNTs were used to catalyze the oxidation of aniline, and a high efficiency has been obtained. Consecutive use of the conjugate of hematin-MPTS-M-MWCNTs has been investigated, and the activity has been retained to a significant extent after five reaction/cleaning cycles. The result demonstrates that hematin-MPTS-M-MWCNTs are efficient for catalyzing the oxidation of aniline. The methodology for the specific grafting of hematin is of general utility, it is an easy-to-operate method and can be extended to other supports. Potentially, hematin-MPTS-based conjugates have a widespread application in catalyzing the removal of aniline from wastewater. View Full-Text
Keywords: hematin; aniline; polyaniline; wastewater; carbon nanotubes hematin; aniline; polyaniline; wastewater; carbon nanotubes
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Zheng, K.; Li, P.; Wu, H.; Du, M.; Ji, P. Specifically Grafting Hematin on MPTS-Coated Carbon Nanotubes for Catalyzing the Oxidation of Aniline. Catalysts 2016, 6, 123.

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