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Two-step fabrication of nanoporous copper films with tunable morphology for SERS application

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dc.contributor.author Diao, Fangyuan
dc.contributor.author Xiao, Xinxin
dc.contributor.author Luo, Bing
dc.contributor.author Sun, Hui
dc.contributor.author Ding, Fei
dc.contributor.author Ci, Lijie
dc.contributor.author Si, Pengchao
dc.date.accessioned 2017-11-06T11:16:08Z
dc.date.issued 2017
dc.identifier.uri http://hdl.handle.net/10344/6232
dc.description peer-reviewed en_US
dc.description.abstract It is important to design and fabricate nanoporous metals (NPMs) with optimized microstructures for specific applications. In this contribution, nanoporous coppers (NPCs) with controllable thicknesses and pore sizes were fabricated via the combination of a co-sputtering of Cu/Ti with a subsequent dealloying process. The effect of dealloying time on porous morphology and the corresponding surface enhanced Raman scattering (SERS) behaviors were systematically investigated. Transmission electron microscopy (TEM) identified the presences of the gaps formed between ligaments and also the nanobumps on the nanoparticle-aggregated ligament surface, which were likely to contribute as the “hot spots” for electromagnetic enhancement. The optimal NPC film exhibited excellent SERS performance towards Rhodamine 6G (R6G) with a low limiting detection (10−9 M), along with good uniformity and reproducibility. The calculated enhancement factor of ca. 4.71 × 107 was over Au substrates and comparable to Ag systems, promising the proposed NPC as a cheap candidate for high-performance SERS substrate. en_US
dc.language.iso eng en_US
dc.publisher Elsevier en_US
dc.relation.ispartofseries Applied Surface Science;427, Part A, pp. 1271-1279
dc.relation.uri http://dx.doi.org/10.1016/j.apsusc.2017.08.117
dc.rights This is the author’s version of a work that was accepted for publication in Applied Surface Science. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Applied Surface Science, 2017, 427, Part A, pp. 1271-1279, http://dx.doi.org/10.1016/j.apsusc.2017.08.117 en_US
dc.subject nanoporous copper en_US
dc.subject co-sputtering en_US
dc.subject dealloying en_US
dc.subject surface-enhanced Raman scattering en_US
dc.title Two-step fabrication of nanoporous copper films with tunable morphology for SERS application en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.identifier.doi 10.1016/j.apsusc.2017.08.117
dc.contributor.sponsor Shandong Provincial Science and Technology Major Project en_US
dc.contributor.sponsor Key Research Plan of Shandong Province en_US
dc.relation.projectid 2015ZDZX11008 en_US
dc.relation.projectid 2016JC005 en_US
dc.relation.projectid 2017JC042 en_US
dc.relation.projectid 2017JC010 en_US
dc.relation.projectid 2015GGE27286 en_US
dc.relation.projectid 2016GGX104001 en_US
dc.date.embargoEndDate 2019-08-25
dc.embargo.terms 2019-08-25 en_US
dc.rights.accessrights info:eu-repo/semantics/embargoedAccess en_US


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