DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Young Eun | ko |
dc.contributor.author | Kim, Beomil | ko |
dc.contributor.author | Lee, Wonhee | ko |
dc.contributor.author | Ko, You Na | ko |
dc.contributor.author | Youn, Min Hye | ko |
dc.contributor.author | Jeong, Soon Kwan | ko |
dc.contributor.author | Park, Ki Tae | ko |
dc.contributor.author | Oh, Jihun | ko |
dc.date.accessioned | 2021-05-11T02:30:12Z | - |
dc.date.available | 2021-05-11T02:30:12Z | - |
dc.date.created | 2021-05-11 | - |
dc.date.created | 2021-05-11 | - |
dc.date.created | 2021-05-11 | - |
dc.date.issued | 2021-06 | - |
dc.identifier.citation | CHEMICAL ENGINEERING JOURNAL, v.413 | - |
dc.identifier.issn | 1385-8947 | - |
dc.identifier.uri | http://hdl.handle.net/10203/282871 | - |
dc.description.abstract | The direct conversion of CO2 to syngas with controllable H-2/CO ratio has been investigated using electrochemical reduction of CO2 in aqueous media. Despite considerable progress on electrocatalytic syngas production, it remains challenging to generate a stable H-2/CO ratio over a wide range of applied potentials. In this study, we investigated Ag/TiO2 catalysts, by which we achieved a stable H-2/CO ratio with high Faradaic efficiency (93-100%) and partial current densities (similar to 164 mA center dot cm(-2)) for syngas production in a flow cell. The H-2/CO ratio was controlled by changing the catalyst properties resulting from oxygen vacancies and phase difference of TiO2. The H-2/CO ratio of Ag/TiO2 catalysts was increased by introducing oxygen vacancy defects in the bulk and on the surface of TiO2 anatase. Furthermore, the H-2/CO ratio was also increased by changing the TiO2 phases from anatase to rutile, even if the rutile phase possessed fewer oxygen vacancies. The 40 wt% Ag/TiO2 catalysts calcined in different gases (Ag/TiO2 anatase-air, Ag/TiO2 anatase-H-2/Ar, and Ag/TiO2 rutile-air) exhibited H-2/ CO ratios of 0.1-0.3, 0.5-1.1, and 0.5-1.5, respectively, within the range of potential from 0.35 to 0.65 V (vs. RHE). | - |
dc.language | English | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.title | Highly tunable syngas production by electrocatalytic reduction of CO2 using Ag/TiO2 catalysts | - |
dc.type | Article | - |
dc.identifier.wosid | 000638225400002 | - |
dc.identifier.scopusid | 2-s2.0-85094571925 | - |
dc.type.rims | ART | - |
dc.citation.volume | 413 | - |
dc.citation.publicationname | CHEMICAL ENGINEERING JOURNAL | - |
dc.identifier.doi | 10.1016/j.cej.2020.127448 | - |
dc.contributor.localauthor | Oh, Jihun | - |
dc.contributor.nonIdAuthor | Lee, Wonhee | - |
dc.contributor.nonIdAuthor | Ko, You Na | - |
dc.contributor.nonIdAuthor | Youn, Min Hye | - |
dc.contributor.nonIdAuthor | Jeong, Soon Kwan | - |
dc.contributor.nonIdAuthor | Park, Ki Tae | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | CO2 electroreduction | - |
dc.subject.keywordAuthor | Syngas production | - |
dc.subject.keywordAuthor | Gas diffusion electrode | - |
dc.subject.keywordAuthor | Silver | - |
dc.subject.keywordAuthor | Titanium oxide | - |
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