完整後設資料紀錄
DC 欄位語言
dc.contributor.authorPu, Ying-Chihen_US
dc.contributor.authorChen, Wei-Taen_US
dc.contributor.authorFang, Mei-Jingen_US
dc.contributor.authorChen, Yu-Linen_US
dc.contributor.authorTsai, Kai-Anen_US
dc.contributor.authorLin, Wei-Haoen_US
dc.contributor.authorHsu, Yung-Jungen_US
dc.date.accessioned2019-04-02T05:59:50Z-
dc.date.available2019-04-02T05:59:50Z-
dc.date.issued2018-09-28en_US
dc.identifier.issn2050-7488en_US
dc.identifier.urihttp://dx.doi.org/10.1039/c8ta05539den_US
dc.identifier.urihttp://hdl.handle.net/11536/148355-
dc.description.abstractAu-Cd1-xZnxS core-shell nanocrystals (NCs) with controllable shell compositions (from x = 0 to x = 0.37) were synthesized by using the hot-injection method. By increasing the mole fraction of ZnS in the Cd1-xZnxS shell, the conduction band of Cd1-xZnxS can be cathodically shifted to cause an increase of energy difference between the conduction band level of the Cd1-xZnxS shell and the Fermi level of the Au core, thereby enlarging the driving force of interfacial electron transfer to enhance the photoelectrochemical (PEC) efficiency. The interfacial charge dynamics of the samples were examined by time-resolved photoluminescence (TRPL) spectroscopy. The results showed that the interfacial electron transfer rate constant (k(et)) from the Cd1-xZnxS shell to the Au core was increased by 2 orders of magnitude, from 2.41 x 10(7) to 4.91 x 10(9) s(-1) as the mole fraction of ZnS increased from 0 to 0.37. Furthermore, PEC characterization, including Mott-Schottky analysis and photovoltage decay measurements, illustrated that gradually introducing ZnS into the shell composition of Au-Cd1-xZnxS NCs can modify the band structure and enhance the effectiveness of interfacial ET for advancing the PEC properties. The practical use of Au-Cd1-xZnxS NCs in PEC methanol oxidation was also demonstrated, revealing their promising potential as viable photoelectrodes for various PEC applications. The present study delivers an alternative approach of modulating the interfacial ET dynamics of core-shell MSNs by means of shell composition adjustment. The illustrations provide an empirical guideline to the intelligent design of core-shell metal-semiconductor nanoheterostructures (MSNs) for the desired PEC applications.en_US
dc.language.isoen_USen_US
dc.titleAu-Cd1-xZnxS core-alloyed shell nanocrystals: boosting the interfacial charge dynamics by adjusting the shell compositionen_US
dc.typeArticleen_US
dc.identifier.doi10.1039/c8ta05539den_US
dc.identifier.journalJOURNAL OF MATERIALS CHEMISTRY Aen_US
dc.citation.volume6en_US
dc.citation.spage17503en_US
dc.citation.epage17513en_US
dc.contributor.department交大名義發表zh_TW
dc.contributor.department材料科學與工程學系zh_TW
dc.contributor.departmentNational Chiao Tung Universityen_US
dc.contributor.departmentDepartment of Materials Science and Engineeringen_US
dc.identifier.wosnumberWOS:000448147200027en_US
dc.citation.woscount1en_US
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