Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/9062
Title: Encapsulation of a living bioelectrode by a hydrogel for bioelectrochemical systems in alkaline media
Authors: Chen, S
Yang, F
Li, C
Zheng, S
Zhang, H
Li, M
Yao, H 
Zhao, F
Hou, H
Issue Date: 2015
Publisher: Royal Society of Chemistry
Source: Journal of materials chemistry B, 2015, v. 3, no. 23, p. 4641-4646 How to cite?
Journal: Journal of materials chemistry B 
Abstract: The electroactive biofilms in the bioelectrodes of traditional bioelectrochemical systems (BES) directly interact with the aqueous solution and usually require a mild aqueous solution environment (e.g. 20 mM acetate and pH = 7.0) to exert their optimum bioelectrocatalytic activity. In this communication, we present a concept of encapsulation of a bioelectrode by a hydrogel for a BES in an alkaline solution environment. A hydrogel-bioelectrode (HBE) was prepared by encapsulating a living electroactive biofilm pre-grown in the bioelectrode with a poly(vinyl alcohol) hydrogel through a freezing/thawing process. Under the protection of the hydrogel, the HBE could keep a high bioelectrocatalytic activity in an alkaline feeding solution with an acetate concentration of over 80 mM and a pH value of 11.0. Moreover it was very stable and tolerated low-frequency ultrasonic vibration. These results imply the extended applications of BESs in the area of high-strength wastewater treatment, portable and implantable devices.
URI: http://hdl.handle.net/10397/9062
ISSN: 2050-750X
EISSN: 2050-7518
DOI: 10.1039/c5tb00563a
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