Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 김도균 | - |
dc.date.accessioned | 2019-05-23T04:36:00Z | - |
dc.date.available | 2019-05-23T04:36:00Z | - |
dc.date.issued | 2017-11 | - |
dc.identifier.citation | ACS SUSTAINABLE CHEMISTRY & ENGINEERING, v. 5, No. 11, Page. 10986-10995 | en_US |
dc.identifier.issn | 2168-0485 | - |
dc.identifier.uri | https://pubs.acs.org/doi/abs/10.1021/acssuschemeng.7b02890 | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/105866 | - |
dc.description.abstract | The electrochemical synthesis of NH3 by the nitrogen reduction reaction (NRR) at low temperature (<65 degrees C) and atmospheric pressure using nanosized gamma-Fe2O3 electrocatalysts were demonstrated. The activity and selectivity of the catalyst was investigated both in a 0.1 M KOH electrolyte and when incorporated into an anion-exchange membrane electrode assembly (MEA). In a half-reaction experiment conducted in a KOH electrolyte, the gamma-Fe2O3 electrode presented a faradaic efficiency of 1.9% and a weight-normalized activity of 12.5 nmol h(-1) mg(-1) at 0.0 V. However, the selectivity toward N-2 reduction decreased at more negative potentials owing to the competing proton reduction reaction. When the gamma-Fe2O3 nanoparticles were coated onto porous carbon paper to form an electrode for a MEA, their weight-normalized activity for N-2 reduction was found to increase dramatically to 55.9 nmol h(-1) mg(-1). However, the weight- and area-normalized N-2 reduction activities of gamma-Fe2O3 decreased progressively from 35.9 to 14.8 nmol h(-1) mg(-1) and from 0.105 to 0.043 nmol h(-1) Cm-2 (act)) respectively, during a 25 h MEA durability test. In summary, a study of the fundamental behavior and catalytic activity of gamma-Fe2O3 nanoparticles in the electrochemical synthesis of NH3 under low temperature and pressure is presented. | en_US |
dc.description.sponsorship | This research was supported by a grant from the National Research Foundation of Korea (2016M3D1A1021142) funded by the Ministry of Science, ICT & Future Planning of Korea, and the Korea Institute of Science and Technology (KIST) through the institutional project. | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | AMER CHEMICAL SOC | en_US |
dc.subject | Electrochemical ammonia synthesis | en_US |
dc.subject | Electrocatalyst | en_US |
dc.subject | Iron oxide | en_US |
dc.subject | Membrane electrode assembly | en_US |
dc.title | Electrochemical synthesis of NH3 at low temperature and atmospheric pressure using a γ-Fe2O3 Catalyst | en_US |
dc.type | Article | en_US |
dc.identifier.doi | 10.1021/acssuschemeng.7b02890 | - |
dc.relation.journal | ACS SUSTAINABLE CHEMISTRY & ENGINEERING | - |
dc.contributor.googleauthor | Kong, J. | - |
dc.contributor.googleauthor | Lim, A. | - |
dc.contributor.googleauthor | Yoon, C. | - |
dc.contributor.googleauthor | Jang, J.H. | - |
dc.contributor.googleauthor | Ham, H.C. | - |
dc.contributor.googleauthor | Han, J | - |
dc.contributor.googleauthor | Nam, S. | - |
dc.contributor.googleauthor | Kim, D | - |
dc.contributor.googleauthor | Sung, Y.-E. | - |
dc.contributor.googleauthor | Choi, J. | - |
dc.contributor.googleauthor | Park, H.S. | - |
dc.relation.code | 2017010432 | - |
dc.sector.campus | E | - |
dc.sector.daehak | COLLEGE OF ENGINEERING SCIENCES[E] | - |
dc.sector.department | DEPARTMENT OF BIONANO ENGINEERING | - |
dc.identifier.pid | kimdk | - |
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