中文版 | English
Title

Efficient Electroreduction of Nitrate into Ammonia at Ultralow Concentrations Via an Enrichment Effect

Author
Corresponding AuthorGeng,Zhigang
Publication Years
2022
DOI
Source Title
ISSN
0935-9648
EISSN
1521-4095
Volume34
Abstract
The electroreduction of nitrate (NO) pollutants to ammonia (NH) offers an alternative approach for both wastewater treatment and NH synthesis. Numerous electrocatalysts have been reported for the electroreduction of NO to NH, but most of them demonstrate poor performance at ultralow NO concentrations. In this study, a Cu-based catalyst for electroreduction of NO at ultralow concentrations is developed by encapsulating Cu nanoparticles in a porous carbon framework (Cu@C). At −0.3 V vs reversible hydrogen electrode (RHE), Cu@C achieves Faradaic efficiency for NH of 72.0% with 1 × 10 m NO, which is 3.6 times higher than that of Cu nanoparticles. Notably, at −0.9 V vs RHE, the yield rate of NH for Cu@C is 469.5 µg h cm, which is the highest value reported for electrocatalysts with 1 × 10 m NO. An investigation of the mechanism reveals that NO can be concentrated owing to the enrichment effect of the porous carbon framework in Cu@C, thereby facilitating the mass transfer of NO for efficient electroreduction into NH at ultralow concentrations.
Keywords
URL[Source Record]
Indexed By
SCI ; EI
Language
English
Important Publications
NI Journal Papers
SUSTech Authorship
Others
Funding Project
National Natural Science Foundation of China["92061111","U1932146","U19A2015"] ; National Science Fund for Distinguished Young Scholars[21925204] ; National Key Research and Development Program of China["2021YFA1500500","2019YFA0405600"] ; China Postdoctoral Program for Innovative Talents[BX20200324] ; Provincial Key Research and Development Program of Anhui[202004a05020074] ; CAS project for young scientists in basic research[YSBR-022] ; K. C. Wong Education[GJTD-2020-15] ; DNL Cooperation Fund, CAS[DNL202003]
WOS Research Area
Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS Subject
Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS Accession No
WOS:000837009100001
Publisher
EI Accession Number
20223212551218
EI Keywords
Ammonia ; Carbon ; Copper ; Electrolysis ; Electrolytic reduction ; Mass transfer ; Nanoparticles ; Nitrates ; Porous materials ; Wastewater treatment
ESI Classification Code
Industrial Wastes Treatment and Disposal:452.4 ; Ore Treatment:533.1 ; Copper:544.1 ; Mass Transfer:641.3 ; Nanotechnology:761 ; Electrochemistry:801.4.1 ; Chemical Reactions:802.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Inorganic Compounds:804.2 ; Solid State Physics:933 ; Materials Science:951
ESI Research Field
MATERIALS SCIENCE
Scopus EID
2-s2.0-85135509064
Data Source
Scopus
Citation statistics
Cited Times [WOS]:7
Document TypeJournal Article
Identifierhttp://kc.sustech.edu.cn/handle/2SGJ60CL/375652
DepartmentDepartment of Chemistry
Affiliation
1.Hefei National Research Center for Physical Sciences at the Microscale,Key Laboratory of Strongly-Coupled Quantum Matter Physics of Chinese Academy of Sciences,Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education Institutes,Department of Chemical Physics,University of Science and Technology of China,Hefei,Anhui,230026,China
2.Department of Chemistry,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China
First Author AffilicationDepartment of Chemistry
Recommended Citation
GB/T 7714
Song,Zhimin,Liu,Yan,Zhong,Yongzhi,et al. Efficient Electroreduction of Nitrate into Ammonia at Ultralow Concentrations Via an Enrichment Effect[J]. ADVANCED MATERIALS,2022,34.
APA
Song,Zhimin,Liu,Yan,Zhong,Yongzhi,Guo,Qing,Zeng,Jie,&Geng,Zhigang.(2022).Efficient Electroreduction of Nitrate into Ammonia at Ultralow Concentrations Via an Enrichment Effect.ADVANCED MATERIALS,34.
MLA
Song,Zhimin,et al."Efficient Electroreduction of Nitrate into Ammonia at Ultralow Concentrations Via an Enrichment Effect".ADVANCED MATERIALS 34(2022).
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