{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,28]],"date-time":"2026-02-28T04:28:59Z","timestamp":1772252939579,"version":"3.50.1"},"reference-count":61,"publisher":"MDPI AG","issue":"13","license":[{"start":{"date-parts":[[2024,7,8]],"date-time":"2024-07-08T00:00:00Z","timestamp":1720396800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Spanish National Research Council","award":["202480E088"],"award-info":[{"award-number":["202480E088"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Nanomaterials"],"abstract":"<jats:p>Bimetallic nanomaterials have generated significant interest across diverse scientific disciplines, due to their unique and tunable properties arising from the synergistic combination of two distinct metallic elements. This study presents a novel approach for synthesizing branched gold\u2013platinum nanoparticles by utilizing poly(allylamine hydrochloride) (PAH)-stabilized branched gold nanoparticles, with a localized surface plasmon resonance (LSPR) response of around 1000 nm, as a template for platinum deposition. This approach allows precise control over nanoparticle size, the LSPR band, and the branching degree at an ambient temperature, without the need for high temperatures or organic solvents. The resulting AuPt branched nanoparticles not only demonstrate optical activity but also enhanced catalytic properties. To evaluate their catalytic potential, we compared the enzymatic capabilities of gold and gold\u2013platinum nanoparticles by examining their peroxidase-like activity in the oxidation of 3,3\u2032,5,5\u2032-tetramethylbenzidine (TMB). Our findings revealed that the incorporation of platinum onto the gold surface substantially enhanced the catalytic efficiency, highlighting the potential of these bimetallic nanoparticles in catalytic applications.<\/jats:p>","DOI":"10.3390\/nano14131166","type":"journal-article","created":{"date-parts":[[2024,7,8]],"date-time":"2024-07-08T11:30:02Z","timestamp":1720438202000},"page":"1166","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Synthesis, Structural Analysis, and Peroxidase-Mimicking Activity of AuPt Branched Nanoparticles"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1420-6109","authenticated-orcid":false,"given":"Silvia","family":"Nuti","sequence":"first","affiliation":[{"name":"BIOSCOPE Research Group, LAQV-REQUIMTE, Chemistry Department, NOVA School of Science and Technology (FCT NOVA), Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8853-2631","authenticated-orcid":false,"given":"Javier","family":"Fern\u00e1ndez-Lodeiro","sequence":"additional","affiliation":[{"name":"BIOSCOPE Research Group, LAQV-REQUIMTE, Chemistry Department, NOVA School of Science and Technology (FCT NOVA), Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal"},{"name":"PROTEOMASS Scientific Society, Praceta Jer\u00f3nimo Dias, Num. 12, 2A, Sto Ant\u00f3nio de Caparica, 2825-466 Costa de Caparica, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6464-1216","authenticated-orcid":false,"given":"Jose M.","family":"Palomo","sequence":"additional","affiliation":[{"name":"Instituto de Catalisis y Petroleoquimica (ICP), Consejo Superior de Investigaciones Cient\u00edficas (CSIC) Marie Curie 2, 28049 Madrid, Spain"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6276-8507","authenticated-orcid":false,"given":"Jos\u00e9-Luis","family":"Capelo-Martinez","sequence":"additional","affiliation":[{"name":"BIOSCOPE Research Group, LAQV-REQUIMTE, Chemistry Department, NOVA School of Science and Technology (FCT NOVA), Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal"},{"name":"PROTEOMASS Scientific Society, Praceta Jer\u00f3nimo Dias, Num. 12, 2A, Sto Ant\u00f3nio de Caparica, 2825-466 Costa de Caparica, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5582-5446","authenticated-orcid":false,"given":"Carlos","family":"Lodeiro","sequence":"additional","affiliation":[{"name":"BIOSCOPE Research Group, LAQV-REQUIMTE, Chemistry Department, NOVA School of Science and Technology (FCT NOVA), Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal"},{"name":"PROTEOMASS Scientific Society, Praceta Jer\u00f3nimo Dias, Num. 12, 2A, Sto Ant\u00f3nio de Caparica, 2825-466 Costa de Caparica, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3742-1186","authenticated-orcid":false,"given":"Adri\u00e1n","family":"Fern\u00e1ndez-Lodeiro","sequence":"additional","affiliation":[{"name":"BIOSCOPE Research Group, LAQV-REQUIMTE, Chemistry Department, NOVA School of Science and Technology (FCT NOVA), Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal"},{"name":"PROTEOMASS Scientific Society, Praceta Jer\u00f3nimo Dias, Num. 12, 2A, Sto Ant\u00f3nio de Caparica, 2825-466 Costa de Caparica, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2024,7,8]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"18545","DOI":"10.1021\/acs.iecr.1c02681","article-title":"Catalytic Materials: Concepts to Understand the Pathway to Implementation","volume":"60","year":"2021","journal-title":"Ind. 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