Fabrication of a Multi-Walled Nanotube MWNT Ionic Liquid Electrode and Its Application for Sensing Phenolics in Red WinesReportar como inadecuado




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Department of Chemistry, Hannam University, Daejeon 305-811, Republic of Korea;





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Abstract A multi-walled nanotube MWNT ionic liquid was prepared by the immobilization of 1-butylimidazole bromide onto an epoxy group on a polyglycidyl methacrylate-grafted MWNT, which was synthesized by radiation-induced graft polymerization of glycidyl methacrylate onto MWNT in an aqueous solution. Subsequently, a MWNT ionic liquid electrode was fabricated by hand-casting MWNT ionic liquid, tyrosinase, and chitosan solution as a binder on indium tin oxide ITO glass. The sensing ranges of the MWNT ionic liquid electrode with immobilized tyrosinase was in the range of 0.01-0.08 mM in a phosphate buffer solution. The optimal conditions such as pH, temperature, and effects of different phenolic compounds were determined. The total phenolic compounds of three commercial red wines were also determined on the tyrosinase-immobilized biosensor. View Full-Text

Keywords: MWNT ion liquid electrode; glycidyl methacrylate; radiation-induced graft polymerization; phenolics; red wines MWNT ion liquid electrode; glycidyl methacrylate; radiation-induced graft polymerization; phenolics; red wines





Autor: Kyo-Il Kim, Hee-Young Kang, Jae-Chan Lee and Seong-Ho Choi *

Fuente: http://mdpi.com/



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