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Stimulation of soil microbial functioning by elevated CO2 may surpass effects mediated by irrigation in a semiarid grassland
Yu, Hao; Deng, Ye; He, Zhili; Pendall, Elise; Carrillo, Yolima; Wang, Shang; Jin, Decai; Wu, Liyou; Wang, Aijie; Xu, Ying; Liu, Baoyong; Tai, Xin; Zhou, Jizhong
2021-11-01
Source PublicationGEODERMA
ISSN0378-7753
Volume514Pages:-
AbstractElectrode materials capable of increasing the electricigens loading and accelerating the extracellular electron transfer (EET) are urgently required for microbial electrocatalytic technologies. In this work, a monolithic electrode (MDC800AM) based on three-dimensional (3D) interconnected N-doped carbon microtubes (NCMTs) derived from nanostructured polyaniline (PANI)-coated cotton fibers is prepared by a facile and scalable method. The PANI-coating layer and subsequent manganese (Mn)-catalyzed graphitization is helpful in doping the surface with nitrogen atoms and improving its graphitization degree, which contributes significantly to the hydrophilicity, biocompatibility and electronic conductivity of the electrode. Because of the hollow structure and large inner diameter of NCMTs, the MDC800AM is able to buffer the electrolyte facilitating well-localized electron shuttles (ES) within the electrode region as well as increase the surface area for electricigens to inhabit. Based on these advantages, the as-prepared MDC800AM exhibits enhanced microbial electrocatalytic activity and stability such as to outperform its counterpart made up of solid carbon fibers. This work not only provides a monolithic electrode manifesting greatly accelerated activity toward microbial electrocatalysis, but also a proof-of-concept demonstration of boosting the microbial fuel cell (MFC) performance via localized high ES concentration.
Department中国科学院环境生物技术重点实验室
KeywordMicrobial fuel cells Microbial electrocatalysis Hollow structures Electron shuttles Graphitization
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/46899
Collection中国科学院环境生物技术重点实验室
Affiliation1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, CAS Key Lab Environm Biotechnol, Beijing 100085, Peoples R China
2.Liaoning Tech Univ, Coll Environm Sci & Engn, Fuxing 123000, Peoples R China
3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
4.Shandong Univ, Inst Marine Sci & Technol, Qingdao 266237, Peoples R China
5.Sun Yat Sen Univ, Environm Microbiome Res Ctr, Sch Environm Sci & Engn, Guangzhou 510006, Peoples R China
6.[Pendall, Elise
7.Carrillo, Yolima
8.Western Sydney Univ, Hawkesbury Inst Environm, Penrith, NSW 2751, Australia
9.Univ Wyoming, Dept Bot & Program Ecol, Laramie, WY 82071 USA
10.Univ Oklahoma, Inst Environm Genom, Dept Microbiol & Plant Biol, Norman, OK 73019 USA
Recommended Citation
GB/T 7714
Yu, Hao,Deng, Ye,He, Zhili,et al. Stimulation of soil microbial functioning by elevated CO2 may surpass effects mediated by irrigation in a semiarid grassland[J]. GEODERMA,2021,514:-.
APA Yu, Hao.,Deng, Ye.,He, Zhili.,Pendall, Elise.,Carrillo, Yolima.,...&Zhou, Jizhong.(2021).Stimulation of soil microbial functioning by elevated CO2 may surpass effects mediated by irrigation in a semiarid grassland.GEODERMA,514,-.
MLA Yu, Hao,et al."Stimulation of soil microbial functioning by elevated CO2 may surpass effects mediated by irrigation in a semiarid grassland".GEODERMA 514(2021):-.
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