Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 장진호 | - |
dc.date.accessioned | 2019-11-20T07:38:24Z | - |
dc.date.available | 2019-11-20T07:38:24Z | - |
dc.date.issued | 2017-02 | - |
dc.identifier.citation | ACS OMEGA, v. 2, no. 2, page. 432-442 | en_US |
dc.identifier.issn | 2470-1343 | - |
dc.identifier.uri | https://pubs.acs.org/doi/10.1021/acsomega.6b00448 | - |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/112625 | - |
dc.description.abstract | Water oxidation electrocatalyzed by Ni2+ under neutral conditions was investigated using various electrochemical analyses. The addition of Ni2+ in a phosphatebuffered solution catalyzed the oxidation of water, as confirmed by the detection of oxygen generation via scanning electrochemical microscopy. A combination of cyclic voltammetry, coulometric titration, and electrochemical quartz microbalance measurements identified the catalysis as heterogeneous and the catalyst as a Ni-based ultrathin (< 4 nm) layer ("Ni-Pi"). Analysis of the potential-and pHdependency of the titrated amount of charge revealed that the catalyst was deposited only under anodic polarization conditions and was removed under unpolarized conditions; the catalyst may be Ni( III) oxide, and its formation and oxidation appeared to be chemically irreversible. The diffusion-limited nature of water oxidation catalyzed by Ni2+ was closely related to the phosphate ions involved in the catalyst formation and the accompanying catalysis. Although the catalytic performance of Ni2+ alone was not remarkable, it exhibited a synergetic effect with BiVO4 for photoelectrochemical water oxidation, which can compete with Co-Pidecorated BiVO4. | en_US |
dc.description.sponsorship | The authors would like to thank Prof. Allen J. Bard (UT-ution) for helpful discussions and experimental support. This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT &amp; Future Planning (NRF-2015R1C1A1A02037791). | en_US |
dc.language.iso | en_US | en_US |
dc.publisher | AMER CHEMICAL SOC | en_US |
dc.subject | OXYGEN-EVOLVING CATALYST | en_US |
dc.subject | THIN-FILMS | en_US |
dc.subject | IN-SITU | en_US |
dc.subject | ARTIFICIAL PHOTOSYNTHESIS | en_US |
dc.subject | HETEROGENEOUS CATALYSIS | en_US |
dc.subject | NICKEL HYDROXIDES | en_US |
dc.subject | COBALT | en_US |
dc.subject | EVOLUTION | en_US |
dc.subject | ELECTROCATALYSTS | en_US |
dc.subject | FE | en_US |
dc.title | Electrochemically Identified Ultrathin Water-Oxidation Catalyst in Neutral pH Solution Containing Ni2+ and Its Combination with Photoelectrode | en_US |
dc.type | Article | en_US |
dc.identifier.doi | 10.1021/acsomega.6b00448 | - |
dc.relation.journal | ACS OMEGA | - |
dc.contributor.googleauthor | Cho, Sung Ki | - |
dc.contributor.googleauthor | Chang, Jinho | - |
dc.relation.code | 2011233381 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF NATURAL SCIENCES[S] | - |
dc.sector.department | DEPARTMENT OF CHEMISTRY | - |
dc.identifier.pid | jhcechem | - |
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