globalchange  > 气候变化与战略
DOI: 10.1016/j.scib.2020.02.015
论文题名:
Nitrogen-doped iron for selective catalytic reduction of nitrate to dinitrogen
作者: Wang J.; Ling L.; Deng Z.; Zhang W.-X.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2020
卷: 65, 期:11
起始页码: 926
结束页码: 933
语种: 英语
中文关键词: Core-shell structure ; Electrocatalytic denitrification ; N2 selectivity ; Nitrogen-doped iron (FeN) ; nZVI
英文关键词: Ammonia ; Denitrification ; Doping (additives) ; Eutrophication ; Heavy metals ; Iron compounds ; Lake pollution ; Nanocatalysts ; Nanoparticles ; Nitrates ; Nitrogen ; Nitrogen removal ; Reservoirs (water) ; River pollution ; Selective catalytic reduction ; Waste treatment ; Wetlands ; Core shell structure ; Electrocatalytic ; Electrocatalytic performance ; Large specific surface areas ; Multiple electron transfer ; Nanoscale zero-valent iron ; Nitrogen-doped ; nZVI ; Chemicals removal (water treatment)
英文摘要: Nitrate is the leading cause of eutrophication worldwide and is one of the most challenging pollutants for restoration of polluted surface waters such as lakes, rivers and reservoirs. We report herein a new architecture of iron nanoparticles for high-efficiency denitrification by selective reduction of nitrate (NO3 −) to dinitrogen (N2). The iron nanoparticles are doped with nitrogen (FeN) and encapsulated within a thin layer of nitride-carbon (NC). The nanoparticles have high pyrrolic N content (17.4 at.%) and large specific surface area (2040 m2/g). Laboratory experiments demonstrated high N2 selectivity (91%) and nitrate removal capacity (6004 mg N/g Fe) for treatment of nitrate-containing water. This iron-based nanomaterial overcomes shortcomings of conventional catalysts by eliminating the use of precious and toxic heavy metals (e.g., Pd, Pt, Cu, Ni) and minimizing the generation of undesirable byproducts (e.g., ammonia) from the reactions with nanoscale zero-valent iron (nZVI). The multiple electron transfers process from NO3 − to N2 can be fine-tuned by adjusting the NC shell thickness. Superior electrocatalytic performance, low cost and minimal environmental impact of the iron-derived nanocatalyst offer promising prospects for water purification, waste treatment and environmental remediation. © 2020 Science China Press
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被引频次[WOS]:45   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170063
Appears in Collections:气候变化与战略

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作者单位: State Key Laboratory for Pollution Control, School of Environmental Science and Engineering, Shanghai Institute of Pollution Control and Ecological Security, Tongji University, Shanghai, 200092, China

Recommended Citation:
Wang J.,Ling L.,Deng Z.,et al. Nitrogen-doped iron for selective catalytic reduction of nitrate to dinitrogen[J]. Science Bulletin,2020-01-01,65(11)
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