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Highly ordered Nb2O5 nanochannel film with rich oxygen vacancies for electrocatalytic N-2 reduction: Inactivation and regeneration of electrode

文献类型：期刊论文

作者Wang, Jialu1,2; Kang, Shenghong2; Zhu, Xiaoguang2; Wang, Guozhong2; Zhang, Haimin2
刊名CHINESE CHEMICAL LETTERS
出版日期2021-09-01
卷号32
关键词Niobium oxide (Nb2O5) Nitrogen (N-2) reduction reaction (NRR) Electrochromism Oxygen vacancies Phase transformation
ISSN号1001-8417
DOI10.1016/j.cclet.2021.01.020
通讯作者Kang, Shenghong(shkang@issp.ac.cn) ; Zhang, Haimin(zhanghm@issp.ac.cn)
英文摘要We report the fabrication of highly ordered Nb2O5 nanochannel film (Nb2O5-NCF) onto niobium foil by an anodization method. After thermal treatment, the obtained Nb2O5-NCF with rich oxygen vacancies exhibits electrochemical N-2 reduction reaction (NRR) activity with an NH3 yield rate of 2.52 x 10(-10) mol Cm(-2)s(-1) and a faradaic efficiency of 9.81% at -0.4 V (vs. RHE) in 0.1 mol/L Na2SO4 electrolyte (pH 3.2). During electrocatalytic NRR, the Nb2O5-NCF takes place electrochromism (EC), along with a crystalline phase transformation from pseudo hexagonal phase to hexagonal phase owing to H+ insertion. This results in the reduced NRR activity due to the decrease of oxygen vacancies of hexagonal phase Nb2O5, which can be readily regenerated by low-temperature thermal treatment or applying an anodic potential, showing superior recycling reproducibility. (C) 2021 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.
WOS关键词ATMOSPHERIC-PRESSURE ; AMMONIA ; NITROGEN ; WATER ; CARBON ; NH3 ; ELECTROSYNTHESIS ; TEMPERATURE ; CHEMISTRY ; FIXATION
资助项目National Key Research and Development Program of China[2017YFA0207203] ; Natural Science Foundation of China[51872292]
WOS研究方向Chemistry
语种英语
WOS记录号WOS:000735948800015
出版者ELSEVIER SCIENCE INC
资助机构National Key Research and Development Program of China ; Natural Science Foundation of China
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/127185]  
专题中国科学院合肥物质科学研究院
通讯作者Kang, Shenghong; Zhang, Haimin
作者单位1.Univ Sci & Technol China, Hefei 230026, Peoples R China
2.Chinese Acad Sci, Key Lab Mat Phys, Ctr Environm & Energy Nanomat, Anhui Key Lab Nanomat & Nanotechnol,Inst Solid St, Hefei 230031, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Jialu,Kang, Shenghong,Zhu, Xiaoguang,et al. Highly ordered Nb2O5 nanochannel film with rich oxygen vacancies for electrocatalytic N-2 reduction: Inactivation and regeneration of electrode[J]. CHINESE CHEMICAL LETTERS,2021,32.
APA Wang, Jialu,Kang, Shenghong,Zhu, Xiaoguang,Wang, Guozhong,&Zhang, Haimin.(2021).Highly ordered Nb2O5 nanochannel film with rich oxygen vacancies for electrocatalytic N-2 reduction: Inactivation and regeneration of electrode.CHINESE CHEMICAL LETTERS,32.
MLA Wang, Jialu,et al."Highly ordered Nb2O5 nanochannel film with rich oxygen vacancies for electrocatalytic N-2 reduction: Inactivation and regeneration of electrode".CHINESE CHEMICAL LETTERS 32(2021).

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来源：合肥物质科学研究院

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