2026-04-29T17:51:27Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/38542021-11-10T09:38:17Zcom_10259_3844com_10259_5086com_10259_2604col_10259_3845

Fernández Blanco, Ana Cristina 169 500 Ibáñez Martínez, David 290 500 Colina, Álvaro 122 500 Ruiz Fernández, Virginia 70e4e36c-40f1-4708-9fc9-83b1bef77e32 500 Heras, Aránzazu 273 500 2015-09-29T09:29:32Z 2015-09-29T09:29:32Z 2014-11 0013-4686 http://hdl.handle.net/10259/3854 10.1016/j.electacta.2014.08.004 UV-Visible, NIR and Raman spectroelectrochemistry techniques have been used for the in-situ study of Pt nanoparticles (PtNPs) electrosynthesis on an electrochemically generated poly(3,4-ethylenedioxythiophene) film. Two electrochemical steps have been used to obtain in a reproducible way PtNPs with catalytic properties towards methanol oxidation: 1) deposition of Pt nuclei on the polymer modified electrode, 2) growth of these nuclei to form nanoparticles yielding drastic changes in the spectroscopic signal and a significant increase of the amount of Pt. A two steps procedure facilitates an interfacial growth mechanism of the nuclei over a diffusion controlled growth. Evolution of UV-Visible and NIR spectra during these two PtNPs synthesis steps helps to understand and explain the mechanism of generation of these nanoparticles. Besides, Energy Dispersive X-Ray analysis and Scanning Electron Microscopy images registered of the composite after each step of synthesis confirm the conclusions extracted from spectroelectrochemistry data Ministerio de Ciencia y Tecnologia (CTQ2010-17127, V.R. Programa Ramon y Cajal), Junta de Castilla y Leon (GR71, BU349-U13), and Academy of Finland (V.R., Academy Research Fellow) is gratefully acknowledged. C. F-B. thanks Ministerio de Educacion, Cultura y Deporte for a predoctoral FPU fellowship. D.I. is grateful for his FPI-MICINN agreement of the Ministerio de Economia y Competitividad. ICTS of Complutense University of Madrid (Spain) and PCT-UBU of Burgos University (Spain) are also acknowledged for SEM images and EDX analysis, respectively. application/pdf eng Elsevier Electrochimica Acta. 2014, V. 145, p. 139–147 http://dx.doi.org/10.1016/j.electacta.2014.08.004 info:eu-repo/grantAgreement/JCyL/GR71 info:eu-repo/grantAgreement/JCyL/BU349-U13 info:eu-repo/grantAgreement/MINCYT/CTQ2010-17127 Conducting polymers PEDOT Platinum nanoparticles Electrochemistry Spectroelectrochemistry Química analítica Chemistry, Analytic Spectroelectrochemical study of the electrosynthesis of Pt nanoparticles/poly(3,4-(ethylenedioxythiophene) composite info:eu-repo/semantics/article info:eu-repo/semantics/submittedVersion info:eu-repo/semantics/openAccess TEXT Fernández-EA_2014.pdf.txt Fernández-EA_2014.pdf.txt Extracted text text/plain 0 https://riubu.ubu.es/bitstream/10259/3854/4/Fern%c3%a1ndez-EA_2014.pdf.txt d41d8cd98f00b204e9800998ecf8427e MD5 4 THUMBNAIL Fernández-EA_2014.pdf.jpg Fernández-EA_2014.pdf.jpg IM Thumbnail image/jpeg 4086 https://riubu.ubu.es/bitstream/10259/3854/3/Fern%c3%a1ndez-EA_2014.pdf.jpg 8127eed8fbfe2f4164970974ece8fe59 MD5 3 ORIGINAL Fernández-EA_2014.pdf Fernández-EA_2014.pdf application/pdf 632451 https://riubu.ubu.es/bitstream/10259/3854/1/Fern%c3%a1ndez-EA_2014.pdf f73e74574cd9e8ffdb6b93c2557993ad MD5 1 LICENSE license.txt license.txt text/plain; charset=utf-8 1362 https://riubu.ubu.es/bitstream/10259/3854/2/license.txt 5d013bfa6e473ff0db22cd82a4d71a70 MD5 2 10259/3854 oai:riubu.ubu.es:10259/3854 2021-11-10 10:38:17.865 Repositorio Institucional de la Universidad de Burgos bubrep@ubu.es RWwgYXV0b3IgY29tbyDDum5pY28gdGl0dWxhciBkZSBsb3MgZGVyZWNob3MgZGUgcHJvcGllZGFkIGludGVsZWN0dWFsIGRlIGxhIG9icmEsIG8gZGlzcG9uaWVuZG8gZGUgbG9zIGRlYmlkb3MgcGVybWlzb3MgZGUgbG9zIG90cm9zIHRpdHVsYXJlcywgc2kgbG9zIGh1YmllcmEsIHkgZW4gdmlydHVkIGRlIGxvcyBkZXJlY2hvcyBxdWUgbGUgY29uZmllcmUgbGEgbGVnaXNsYWNpw7NuIHZpZ2VudGUgc29icmUgcHJvcGllZGFkIGludGVsZWN0dWFsIHkgZGVyZWNob3MgZGUgYXV0b3IsIApBVVRPUklaQSBhIGxhIFVuaXZlcnNpZGFkIGRlIEJ1cmdvcyBhIGRpZnVuZGlyLCBkZSBtYW5lcmEgZ3JhdHVpdGEsIGVsIGNvbnRlbmlkbyBkZSBsb3MgYXJjaGl2b3MgZGlnaXRhbGVzIHF1ZSBjb3JyZXNwb25kZW4gYWwgZG9jdW1lbnRvIGRlc2NyaXRvIGFudGVyaW9ybWVudGUsIGNvbiBjYXLDoWN0ZXIgbm8gZXhjbHVzaXZvIHkgZGUgbWFuZXJhIHDDumJsaWNhIGVuIGFjY2VzbyBhYmllcnRvIGEgdHJhdsOpcyBkZSBJbnRlcm5ldCwgcGFyYSBsbyBxdWUgbGEgQmlibGlvdGVjYSBwcm9jZWRlcsOhIGEgYXJjaGl2YXJsb3MgZW4gZWwgUmVwb3NpdG9yaW8gSW5zdGl0dWNpb25hbC4gQXNpbWlzbW8gYXV0b3JpemEgYSBsYSBVbml2ZXJzaWRhZCBkZSBCdXJnb3MgYSByZWFsaXphciBsYXMgdHJhbnNmb3JtYWNpb25lcyBuZWNlc2FyaWFzIGRlIGZvcm1hdG8sIG5vIGRlIGNvbnRlbmlkbywgcGFyYSBnYXJhbnRpemFyIGxhIHByZXNlcnZhY2nDs24geSBlbCBhY2Nlc28gZW4gZWwgZnV0dXJvLgoKRWwgYXV0b3IgZGlzcG9uZSwgZW4gdG9kbyBjYXNvLCBkZWwgZGVyZWNobyBhIHJldm9jYXIgZXN0YSBhdXRvcml6YWNpw7NuLgoKTGEgY2VzacOzbiBkZSBkZXJlY2hvcyBkZSBlc3RhIG9icmEgc2UgZW5jdWVudHJhIHN1amV0YSBhIGxhIGxlZ2lzbGFjacOzbiB2aWdlbnRlIHNvYnJlIHByb3BpZWRhZCBpbnRlbGVjdHVhbCB5IGRlcmVjaG9zIGRlIGF1dG9yLiBTdSBkaWZ1c2nDs24gZW4gZWwgUmVwb3NpdG9yaW8gc2Vyw6EgYmFqbyBsYSBtb2RhbGlkYWQgZGUgbGljZW5jaWEgQ3JlYXRpdmUgQ29tbW9ucyBvIGVxdWl2YWxlbnRlOiByZWNvbm9jaW1pZW50byDigJMgdXNvIG5vIGNvbWVyY2lhbCDigJMgc2luIG9icmEgZGVyaXZhZGEsIHBvciBsYSBxdWUgc2UgcGVybWl0ZSBoYWNlciBjb3BpYSwgZGlzdHJpYnVpciB5IGNvbXVuaWNhciBww7pibGljYW1lbnRlIGxhIG9icmEgc2llbXByZSBxdWUgc2UgY2l0ZSBhbCBhdXRvciwgZWwgdXNvIHF1ZSBzZSBoYWdhIGRlIGVsbGEgc2VhIG5vIGNvbWVyY2lhbCB5IG5vIHNlIGNyZWVuIG9icmFzIGRlcml2YWRhcyBhIHBhcnRpciBkZSBsYSBvcmlnaW5hbC4K