期刊
ELECTROCHIMICA ACTA
卷 303, 期 -, 页码 268-274出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2019.02.099
关键词
Self-supported; Carbon aerogel; Bioelectrocatalytic; Extracellular electron transfer; Hydrogen evolution
资金
- National Natural Science Foundations of China (NSFC) [21477085, 21537003]
- China Postdoctoral Science Foundation [2017M620169]
- Science AMP
- Technology Commission of Shanghai Municipality [14DZ2261100]
Hydrogen production by microbial electrolysis cells (MECs) is an attractive and promising technology for sustainable energy. The bioelectrocatalytic activity of bioanode plays an essential role in improving the supply of electrons to cathode. Herein, a self-supported three-dimensional (3D) porous carbon aerogel (CA) bioanode was successfully applied in a MEC system for efficient hydrogen production. The 3D porous structure of CA greatly increased the bacterial incubation, then favored the extracellular electron transfer (EET) owing to its high specific surface area, excellent electrical conductivity and enhanced interaction with microbial. As a result, the hydrogen production of Bio-CAjjPt (0.37 mmol cm(-2) h(-1)) was 5 times higher than that of bio-carbon fiber (Bio-CF)parallel to Pt (0.007 mmol cm(-2).h(-1)) at the bias voltage of 0.3 V. Such a MEC with self-supported 3D porous microbial CA bioanode as a promising biotechnology will be further investigated for pollutant degradation and hydrogen production. (c) 2019 Published by Elsevier Ltd.
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