Fabrication of a Multi-Walled Nanotube (MWNT) Ionic Liquid Electrode and Its Application for Sensing Phenolics in Red Wines

doi:10.3390/s90906701

This article is

freely available
re-usable

Sensors 2009, 9(9), 6701-6714; doi:10.3390/s90906701

Article

Fabrication of a Multi-Walled Nanotube (MWNT) Ionic Liquid Electrode and Its Application for Sensing Phenolics in Red Wines

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

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

* Author to whom correspondence should be addressed.

Received: 16 June 2009; in revised form: 14 July 2009 / Accepted: 18 August 2009 / Published: 26 August 2009

(This article belongs to the Section Chemical Sensors)

Download PDF Full-Text [889 KB, uploaded 25 August 2009 21:12 CET]

Abstract: A multi-walled nanotube (MWNT) ionic liquid was prepared by the immobilization of 1-butylimidazole bromide onto an epoxy group on a poly(glycidyl 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.

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

Article Statistics

Click here to load and display the download statistics.

Cite This Article

MDPI and ACS Style

Kim, K.-I.; Kang, H.-Y.; Lee, J.-C.; Choi, S.-H. Fabrication of a Multi-Walled Nanotube (MWNT) Ionic Liquid Electrode and Its Application for Sensing Phenolics in Red Wines. Sensors 2009, 9, 6701-6714.

AMA Style

Kim K.-I., Kang H.-Y., Lee J.-C., Choi S.-H. Fabrication of a Multi-Walled Nanotube (MWNT) Ionic Liquid Electrode and Its Application for Sensing Phenolics in Red Wines. Sensors. 2009; 9(9):6701-6714.

Chicago/Turabian Style

Kim, Kyo-Il; Kang, Hee-Young; Lee, Jae-Chan; Choi, Seong-Ho. 2009. "Fabrication of a Multi-Walled Nanotube (MWNT) Ionic Liquid Electrode and Its Application for Sensing Phenolics in Red Wines." Sensors 9, no. 9: 6701-6714.

Sensors EISSN 1424-8220 Published by MDPI Publishing, Basel, Switzerland RSS E-Mail Table of Contents Alert