DOI: 10.1016/j.jcou.2018.04.014
Scopus记录号: 2-s2.0-85046133557
论文题名: Enhanced electrocatalytic reduction of oxygen at CO2-derived Fe-N-B-doped porous carbon
作者: Byeon A. ; Baik S. ; Lee J.W.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2018
卷: 26 起始页码: 28
结束页码: 35
语种: 英语
英文关键词: Amorphous carbon
; Carbon dioxide
; Fe-N-B-C catalyst
; Flue gas conversion
; Oxygen reduction reaction catalyst
Scopus关键词: Carbon dioxide
; Catalyst activity
; Electrolytes
; Electrolytic reduction
; Extended X ray absorption fine structure spectroscopy
; Flue gases
; Flues
; Gases
; Iron
; Nitrogen
; Oxygen
; Porous materials
; Sodium Borohydride
; Sodium hydroxide
; X ray absorption
; X ray photoelectron spectroscopy
; Alkaline electrolytes
; Cyclic voltammetric
; Electrocatalytic reduction of oxygens
; Extended x-ray absorption fine structure analysis
; Gas conversion
; Long term durability
; Oxygen reduction reaction
; Platinum catalysts
; Amorphous carbon
英文摘要: Fe-N-B doped carbon catalysts are synthesized directly from flue gas containing CO2. They showed enhanced activity for oxygen reduction reaction in an alkaline electrolyte (1 M NaOH), which is comparable activity of commercial platinum catalysts. The amorphous carbon contains nitrogen species derived from nitrogen gas in flue gas and boron atoms which were originated from the reducing agent of sodium borohydride for the flue gas conversion. The amounts of iron species was controlled from 5% to 55% of synthesized amorphous carbon from flue gas. The sample with 33% of Fe precursor species shows the highest oxygen reduction reaction activity. This is due to the existence of pyridinic nitrogen doping and Fe-N bonding in the carbon network verified by X-ray photoelectron spectroscopy (XPS) and extended X-ray absorption fine structure (EXAFS) analyses. Also, from the microscopic images, the degradation of oxygen reduction reaction activity comes from agglomeration of Fe species. The Fe-N-B-C catalyst shows the promise of stability in acidic conditions and long-term durability for 10,000 cyclic voltammetric cycles. © 2018 Elsevier Ltd. All rights reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111881
Appears in Collections: 气候减缓与适应
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作者单位: Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, South Korea
Recommended Citation:
Byeon A.,Baik S.,Lee J.W.. Enhanced electrocatalytic reduction of oxygen at CO2-derived Fe-N-B-doped porous carbon[J]. Journal of CO2 Utilization,2018-01-01,26