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Pt-Coated Lipid Nanotubes for Glucose Oxidation in a Neutral Medium

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journal contribution
posted on 2023-10-23, 15:15 authored by Hanqun Wang, Ju Hwan Kim, Jeon Kim, Chong Seung Yoon
Lipid nanotubes (LNTs) produced by the polymerization of 1,2-bis(10,12-tricosadiynoyl)-sn-glycero-3-phosphocholine were uniformly coated with a thin film (∼13 nm) of Pt through a two-step reduction of H2PtCl6. The Pt-coated LNTs exhibited a strong catalytic activity toward the oxidation of glucose in a phosphate buffer solution (PBS) at pH 7.4. The Pt-coated LNTs can be used as an electrochemical sensor for measuring the glucose concentrations in physiological fluids and also as an anode for biocompatible glucose fuel cells (GFCs). A membrane-less GFC based on the proposed Pt-coated LNT anode and Fe–Co/carbon cathode produced a high power density of 62 μW/cm2 in a PBS solution with 5 mM glucose with an open circuit voltage of 0.3 V.

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