DC Field | Value | Language |
---|---|---|
dc.contributor.author | Han, Zishan | ko |
dc.contributor.author | Choi, Changhyeok | ko |
dc.contributor.author | Hong, Song | ko |
dc.contributor.author | Wu, Tai-Sing | ko |
dc.contributor.author | Soo, Yun-Liang | ko |
dc.contributor.author | Jung, Yousung | ko |
dc.contributor.author | Qiu, Jieshan | ko |
dc.contributor.author | Sun, Zhenyu | ko |
dc.date.accessioned | 2019-09-03T03:20:02Z | - |
dc.date.available | 2019-09-03T03:20:02Z | - |
dc.date.created | 2019-09-02 | - |
dc.date.created | 2019-09-02 | - |
dc.date.issued | 2019-11 | - |
dc.identifier.citation | APPLIED CATALYSIS B-ENVIRONMENTAL, v.257 | - |
dc.identifier.issn | 0926-3373 | - |
dc.identifier.uri | http://hdl.handle.net/10203/266595 | - |
dc.description.abstract | Renewable energy-driven electrochemical N-2 reduction reaction (NRR) provides a green and sustainable route for NH3 synthesis under ambient conditions but is plagued by a high reaction barrier and low selectivity. To promote NRR, modification of the catalyst surface to increase N-2 adsorption and activation is key. Here, we show that engineering surface oxygen vacancies of TiO2 permits significantly enhanced NRR activity with an NH3 yield rate of about 3.0 mu g(NH3)h(-)(1 )mg(cat.)(-1) and a faradaic efficiency (FE) of 6.5% at -0.12 V (vs. the reversible hydrogen electrode, RHE). Efficient conversion of N-2 to NH3 is achieved in a wide applied potential range from -0.07 to -0.22 V (vs. RHE) with NH3 production rates >= 2.0 RgNH(3 )mu g(NH3)h(-)(1 )mg(cat.)(-1) and NH3 FEs >= 4.9%, respec- tively. An NH3 FE as high as 9.8% is obtained at a low overpotential of 80 mV. Density functional theory calculations reveal that the surface oxygen vacancies in TiO2 play a vital role in facilitating electrochemical N-2 reduction by activating the first protonation step and also increasing N-2 chemisorption (relative to *H). | - |
dc.language | English | - |
dc.publisher | ELSEVIER | - |
dc.title | Activated TiO2 with tuned vacancy for efficient electrochemical nitrogen reduction | - |
dc.type | Article | - |
dc.identifier.wosid | 000480669500038 | - |
dc.identifier.scopusid | 2-s2.0-85068864597 | - |
dc.type.rims | ART | - |
dc.citation.volume | 257 | - |
dc.citation.publicationname | APPLIED CATALYSIS B-ENVIRONMENTAL | - |
dc.identifier.doi | 10.1016/j.apcatb.2019.117896 | - |
dc.contributor.localauthor | Jung, Yousung | - |
dc.contributor.nonIdAuthor | Han, Zishan | - |
dc.contributor.nonIdAuthor | Choi, Changhyeok | - |
dc.contributor.nonIdAuthor | Hong, Song | - |
dc.contributor.nonIdAuthor | Wu, Tai-Sing | - |
dc.contributor.nonIdAuthor | Soo, Yun-Liang | - |
dc.contributor.nonIdAuthor | Qiu, Jieshan | - |
dc.contributor.nonIdAuthor | Sun, Zhenyu | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Ammonia | - |
dc.subject.keywordAuthor | Electrochemistry | - |
dc.subject.keywordAuthor | N-2 reduction | - |
dc.subject.keywordAuthor | Oxygen vacancy | - |
dc.subject.keywordAuthor | TiO2 | - |
dc.subject.keywordPlus | ELECTROCATALYTIC N-2 REDUCTION | - |
dc.subject.keywordPlus | CARBON NITRIDE NANOSHEETS | - |
dc.subject.keywordPlus | OXYGEN VACANCIES | - |
dc.subject.keywordPlus | PHOTOCATALYTIC REDUCTION | - |
dc.subject.keywordPlus | ATMOSPHERIC-PRESSURE | - |
dc.subject.keywordPlus | AMBIENT CONDITIONS | - |
dc.subject.keywordPlus | AMMONIA | - |
dc.subject.keywordPlus | DINITROGEN | - |
dc.subject.keywordPlus | FIXATION | - |
dc.subject.keywordPlus | WATER | - |
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