Surface activated natural wood biomass electrode for efficient microbial electrocatalysis: Performance and mechanism
文献类型： 外文期刊
作者： Xu, Zi-Ai 1 ; Ma, Xiao-Meng 1 ; Shi, Yu-Tong 1 ; Moradian, Jamile Mohammadi 1 ; Wang, Yan-Zhai 1 ; Sun, Guo-Feng 2 ; Du, Jing 2 ; Ye, Xiao-Mei 2 ; Yong, Yang-Chun 1 ;
作者机构： 1.Jiangsu Univ, Biofuels Inst, Sch Environm & Safety Engn, 301 Xuefu Rd, Zhenjiang 212013, Jiangsu, Peoples R China
2.Jiangsu Acad Agr Sci, Key Lab Crop & Anim Integrated Farming, Minist Agr & Rural Affairs, Nanjing, Peoples R China
关键词： extracellular electron transfer; microbial electrocatalysis; microbial fuel cells; surface activation; wood electrode
期刊名称：INTERNATIONAL JOURNAL OF ENERGY RESEARCH （ 影响因子：4.672； 五年影响因子：4.533 ）
ISSN： 0363-907X
年卷期： 2022 年 46 卷 6 期
页码：
收录情况： SCI
摘要： Microbial electrocatalysis showed great potential for waste energy harvesting and CO2 upgrading. The conventional electrodes with three-dimensional (3D) architectures hold promise for efficient microbial electrocatalysis, but they were designed as macroporous structure with microfibers in all three dimensions, which could not concurrently improve the mass transfer and microbes penetration. In this study, a high-performance 3D electrode assembled from bulk two-dimensional (2D) structures derived from natural wood was fabricated by hydrothermal treatment for surface activation and followed by pyrolysis. This 2D/3D hybrid structure guaranteed high surface area and multi-transportation-pathways, which endowed the wood electrode attracted more bacterial cells, facilitated the interfacial electron transfer between cells and electrode. As a result, the wood electrode delivered 8.3 times higher power output (483 vs 52 mW/m(2)) and 3.1 times higher formic acid production (3.3 vs 0.8 mM) than conventional carbon cloth electrode in microbial electrocatalysis system. This work provided new strategy for high-performance wood electrode fabrication and unveiled the mechanism of microbial electrocatalysis with natural biomass electrode.
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