Journal
ELECTROCHIMICA ACTA
Volume 222, Issue -, Pages 123-132Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2016.10.164
Keywords
Products generation; TiO2 nanotubes; Photoelectrocatalysis; Glucose conversion
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Funding
- Brazilian research funding agency FAPESP [2008/10449-7, 2015/18109-4]
- Brazilian research funding agency CAPES
- Brazilian research funding agency CNPq
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [15/18109-4] Funding Source: FAPESP
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The present work describes an alternative process for glucose oxidation via photoelectrocatalytic technique using Ti/TiO2 nanotubes as photoanodes. Under optimum experimental conditions, which entailed 10.0 mM glucose in 0.1 M Na2SO4, pH 6.60, E-app = 1.5 V and UV irradiation we were able to convert 78% of glucose following 180 min of photoelectrocatalysis. Out of that, only 28% was in effect, converted to CO2 as detected by total organic carbon removal. During the course of the process, a large part of this glucose was found to be transformed into products among them including Arabinose, Arabinitol, 4-ketoglicose, glucohexodialdose, Glucone-delta-Lactone, 6-deoxiglucose and Gluconic Acid, where this detection was aided by ion-exchange chromatography with amperometric detection and gas chromatography-mass spectra. The results thus essentially demonstrate that photoelectrocatalys can be considered a suitable alternative in fostering glucose conversion, in aqueous medium, to high added value products using a relatively simple and economic method. (C) 2016 Elsevier Ltd. All rights reserved.
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