{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,20]],"date-time":"2026-02-20T04:00:50Z","timestamp":1771560050700,"version":"3.50.1"},"reference-count":37,"publisher":"MDPI AG","issue":"23","license":[{"start":{"date-parts":[[2024,12,7]],"date-time":"2024-12-07T00:00:00Z","timestamp":1733529600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["21766009"],"award-info":[{"award-number":["21766009"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Molecules"],"abstract":"<jats:p>It is a great challenge to prepare efficient and stable electrocatalysts for hydrogen evolution (HER) using non-precious metals. In this study, a series of PtCo\/Ti3C2Tx-Y (Y: 16, 32, and 320, Y indicates the quality of Co(NO3)2) catalysts were synthesized by loading PtCo alloy on Ti3C2Tx. The PtCo\/Ti3C2Tx-32 catalyst showed the best HER performance, reaching a current density of 10 mA cm\u22122 with low overpotential (36 and 101 mV) and small Tafel slopes (66.37 and 105.17 mV dec\u22121) in 0.5 mol L\u22121 H2SO4 and 1 mol L\u22121 KOH solution. The excellent HER activity of PtCo\/Ti3C2Tx-32 can be attributed as follows: Ti3C2Tx has a unique two-dimensional structure, which can provide a large number of attachment sites for the PtCo alloy, hence exposing more active sites; on the other hand, it can also provide a fast and efficient conductive network for electron transport during electrocatalytic processes, thus enhancing the connectivity between electrolyte and catalyst. PtCo alloy makes the PtCo\/Ti3C2Tx catalyst more hydrophilic, accelerating the release rate of bubbles. The DFT calculation results showed that the energy barrier of HER is reduced because the charge around Pt is redistributed by Co after alloying Pt and Co, so that the PtCo\/Ti3C2Tx catalyst has a suitable \u0394GH* value. This study can be expected to provide some references for the design and synthesis of Ti3C2Tx-supported alloy electrocatalysts with high activity and stability for HER.<\/jats:p>","DOI":"10.3390\/molecules29235793","type":"journal-article","created":{"date-parts":[[2024,12,9]],"date-time":"2024-12-09T10:11:47Z","timestamp":1733739107000},"page":"5793","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["MXene Anchored with Platinum Cobalt Alloy as an Efficient and Stable Electrocatalyst for Hydrogen Evolution"],"prefix":"10.3390","volume":"29","author":[{"given":"Jing","family":"Xiao","sequence":"first","affiliation":[{"name":"School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Buxiang","family":"Wang","sequence":"additional","affiliation":[{"name":"School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7742-6374","authenticated-orcid":false,"given":"Qing","family":"Shu","sequence":"additional","affiliation":[{"name":"School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2024,12,7]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"1043","DOI":"10.1021\/acsenergylett.1c02591","article-title":"Solar-driven hydrogen production: Recent advances, challenges, and future perspectives","volume":"7","author":"Song","year":"2022","journal-title":"ACS Energy Lett."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"108718","DOI":"10.1016\/j.nanoen.2023.108718","article-title":"Electronic structure regulation in the design of low-cost efficient electrocatalysts: From theory to applications","volume":"115","author":"Cheng","year":"2023","journal-title":"Nano Energy"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"801","DOI":"10.1039\/C9CY02366F","article-title":"Tailored fabrication of iridium nanoparticle-sensitized titanium oxynitride nanotubes for solar-driven water splitting: Experimental insights on the photocatalytic\u2013activity\u2013defects relationship","volume":"10","author":"Eid","year":"2020","journal-title":"Catal. 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A"}],"container-title":["Molecules"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/1420-3049\/29\/23\/5793\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T16:49:28Z","timestamp":1760114968000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/1420-3049\/29\/23\/5793"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,12,7]]},"references-count":37,"journal-issue":{"issue":"23","published-online":{"date-parts":[[2024,12]]}},"alternative-id":["molecules29235793"],"URL":"https:\/\/doi.org\/10.3390\/molecules29235793","relation":{},"ISSN":["1420-3049"],"issn-type":[{"value":"1420-3049","type":"electronic"}],"subject":[],"published":{"date-parts":[[2024,12,7]]}}}