标题: Urea Electrosynthesis in Microbial Electrolysis Cells Using Low-cost Fe-N-C for Simultaneous N-2 and CO2 Reduction

作者: Huang, Y (Huang, Yu); Luo, K (Luo, Kun); Yang, WL (Yang, Wulin); Chen, XF (Chen, Xiaofei); Wang, ML (Wang, Mingliang); Shi, L (Shi, Lin); Zhu, LD (Zhu, Liandong); Mao, XH (Mao, Xuhui); Ji, XY (Ji, Xiaoyu); Xu, T (Xu, Tao); Zhu, H (Zhu, Hua); Wang, X (Wang, Xu)

来源出版物: INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH  DOI: 10.1021/acs.iecr.3c01916  提前访问日期: AUG 2023  

摘要: The electrocatalytic synthesis of urea significantlyreduces energyconsumption compared with that of the traditional Haber-Boschprocess. However, few studies regarding suitable electrochemical reactorshave been conducted. In this study, we conducted electrolysis in adual-chamber microbial electrolysis cell with low energy consumptionto simultaneously degrade organic matter in wastewater and directlyutilize the generated urea in agricultural applications. Detailedoptimization and evaluation of low-cost Fe-N-C electrocatalystsprepared via a two-step annealing were conducted. Electroreductionsof N-2 and CO2 on the bifunctional catalystsgenerated a favorable amount of urea (0.156 mmol g(-1) h(-1)), and the Faradaic efficiency reached a highlevel of 2.13%. The gas diffusion electrode significantly enhancedmass transfer between the gaseous reactants and cathode compared withthat over the carbon paper electrode. This study provides a promisingstrategy with low economic and environmental costs for the practicalapplication of urea electrosynthesis in rural areas.

KeyWords Plus: GAS-DIFFUSION ELECTRODES; OXYGEN REDUCTION; HYDROGEN-PRODUCTION; CATHODE CATALYSTS; DOPED GRAPHENE; ATOM CATALYSTS; METAL; ELECTROCATALYSTS; IDENTIFICATION; RECOVERY

地址: [Huang, Yu; Zhu, Liandong; Mao, Xuhui; Ji, Xiaoyu; Xu, Tao; Zhu, Hua; Wang, Xu] Wuhan Univ, Sch Resources & Environm Sci, Hubei Int Sci & Technol Cooperat Base Sustainable, Wuhan 430079, Peoples R China.

[Luo, Kun] Changjiang Survey Planning Design & Res Co Ltd, Wuhan 430010, Peoples R China.

[Yang, Wulin] Peking Univ, Coll Environm Sci & Engn, Beijing 100871, Peoples R China.

[Chen, Xiaofei] Hubei Prov Acad Ecoenvironm Sci, Wuhan 430079, Peoples R China.

[Wang, Mingliang] China Commun Construct Co Ltd, Beijing 100088, Peoples R China.

[Shi, Lin] Wuhan Design & Res Inst Co Ltd, China Coal Technol & Engn Grp, Wuhan 430064, Peoples R China.

通讯作者地址: Zhu, LD; Wang, X (通讯作者)，Wuhan Univ, Sch Resources & Environm Sci, Hubei Int Sci & Technol Cooperat Base Sustainable, Wuhan 430079, Peoples R China.

电子邮件地址: ldzhu@whu.edu.cn; xu.wang@whu.edu.cn

影响因子：4.2