Full metadata record
DC Field | Value | Language |
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dc.contributor.author | 황성주 | - |
dc.contributor.author | Gunjakar Jayavant Laxman | - |
dc.date.accessioned | 2016-08-28T12:08:20Z | - |
dc.date.available | 2016-08-28T12:08:20Z | - |
dc.date.issued | 2011 | - |
dc.identifier.issn | 0002-7863 | - |
dc.identifier.other | OAK-8035 | - |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/221999 | - |
dc.description.abstract | Mesoporous layer-by-layer ordered nanohybrids highly active for visible light-induced O 2 generation are synthesized by self-assembly between oppositely charged 2D nanosheets of Zn-Cr-layered double hydroxide (Zn-Cr-LDH) and layered titanium oxide. The layer-by-layer ordering of two kinds of 2D nanosheets is evidenced by powder X-ray diffraction and cross-sectional high resolution-transmission electron microscopy. Upon the interstratification process, the original in-plane atomic arrangements and electronic structures of the component nanosheets remain intact. The obtained heterolayered nanohybrids show a strong absorption of visible light and a remarkably depressed photoluminescence signal, indicating an effective electronic coupling between the two component nanosheets. The self-assembly between 2D inorganic nanosheets leads to the formation of highly porous stacking structure, whose porosity is controllable by changing the ratio of layered titanate/Zn-Cr-LDH. The resultant heterolayered nanohybrids are fairly active for visible light-induced O 2 generation with a rate of ∼1.18 mmol h -1 g -1, which is higher than the O 2 production rate (∼0.67 mmol h -1 g -1) by the pristine Zn-Cr-LDH material, that is, one of the most effective visible light photocatalysts for O 2 production, under the same experimental condition. This result highlights an excellent functionality of the Zn-Cr-LDH-layered titanate nanohybrids as efficient visible light active photocatalysts. Of prime interest is that the chemical stability of the Zn-Cr-LDH is significantly improved upon the hybridization, a result of the protection of the LDH lattice by highly stable titanate layer. The present findings clearly demonstrate that the layer-by-layer-ordered assembly between inorganic 2D nanosheets is quite effective not only in improving the photocatalytic activity of the component semiconductors but also in synthesizing novel porous LDH-based hybrid materials with improved chemical stability. © 2011 American Chemical Society. | - |
dc.language | English | - |
dc.title | Mesoporous layer-by-layer ordered nanohybrids of layered double hydroxide and layered metal oxide: Highly active visible light photocatalysts with improved chemical stability | - |
dc.type | Article | - |
dc.relation.issue | 38 | - |
dc.relation.volume | 133 | - |
dc.relation.index | SCI | - |
dc.relation.index | SCIE | - |
dc.relation.index | SCOPUS | - |
dc.relation.startpage | 14998 | - |
dc.relation.lastpage | 15007 | - |
dc.relation.journaltitle | Journal of the American Chemical Society | - |
dc.identifier.doi | 10.1021/ja203388r | - |
dc.identifier.wosid | WOS:000295604400038 | - |
dc.identifier.scopusid | 2-s2.0-80053091102 | - |
dc.author.google | Gunjakar J.L. | - |
dc.author.google | Kim T.W. | - |
dc.author.google | Kim H.N. | - |
dc.author.google | Kim I.Y. | - |
dc.author.google | Hwang S.-J. | - |
dc.contributor.scopusid | 황성주(7404626171) | - |
dc.contributor.scopusid | Gunjakar Jayavant Laxman(23097941700) | - |
dc.date.modifydate | 20201102081004 | - |