Full metadata record
DC Field | Value | Language |
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dc.contributor.author | 황성주 | - |
dc.date.accessioned | 2016-08-28T12:08:15Z | - |
dc.date.available | 2016-08-28T12:08:15Z | - |
dc.date.issued | 2011 | - |
dc.identifier.issn | 0947-6539 | - |
dc.identifier.other | OAK-7979 | - |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/221956 | - |
dc.description.abstract | Nanohybrids of CdS-polyoxotungstate with strongly coupled electronic structures and visible-light-active photofunctions can be synthesized by electrostatically derived self-assembly of very small CdS quantum dots, or QDs, (particle size ≈ 2.5 nm) and polyoxotungstate nanoclusters (cluster size ≈ 1 nm). The formation of CdS-polyoxotungstate nanohybrids is confirmed by high-resolution transmission electron microscopy, elemental mapping, and powder X-ray diffraction analysis. Due to the strong electronic coupling between two semiconductors, the CdS-polyoxotungstate nanohybrids show a narrow bandgap energy of around 1.9-2.7 eV, thus reflecting their ability to harvest visible light. Time-resolved photoluminescence experiments indicate that the self-assembly between nanosized CdS and polyoxotungstate is very effective in increasing the lifetime of holes and electrons, thus indicating an efficient electron transfer between two-component semiconductors. The hybridization results not only in a significant improvement in the photostability of CdS QD but also in the creation of visible-light-induced photochromism. Of particular importance is that the present nanohybrids show visible-light-driven photocatalytic activity to produce H 2 and O 2, which is superior to those of the unhybridized CdS and polyoxotungstate. The self-assembly of nanometer-level semiconductor clusters can provide a powerful way of optimizing the photoinduced functionalities of each component (i.e., visible-induced photochromism and photocatalysis) by means of strong electronic coupling. © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. | - |
dc.language | English | - |
dc.title | Self-assembly of nanosized 0D clusters: CdS quantum dot-polyoxotungstate nanohybrids with strongly coupled electronic structures and visible-light-active photofunctions | - |
dc.type | Article | - |
dc.relation.issue | 35 | - |
dc.relation.volume | 17 | - |
dc.relation.index | SCIE | - |
dc.relation.index | SCOPUS | - |
dc.relation.startpage | 9626 | - |
dc.relation.lastpage | 9633 | - |
dc.relation.journaltitle | Chemistry - A European Journal | - |
dc.identifier.doi | 10.1002/chem.201100583 | - |
dc.identifier.wosid | WOS:000295001100013 | - |
dc.identifier.scopusid | 2-s2.0-80051734991 | - |
dc.author.google | Kim H.N. | - |
dc.author.google | Kim T.W. | - |
dc.author.google | Choi K.-H. | - |
dc.author.google | Kim I.Y. | - |
dc.author.google | Kim Y.-R. | - |
dc.author.google | Hwang S.-J. | - |
dc.contributor.scopusid | 황성주(7404626171) | - |
dc.date.modifydate | 20190901081003 | - |