{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,4]],"date-time":"2026-10-04T15:02:53Z","timestamp":1791126173248,"version":"4.1.0"},"reference-count":60,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2026,4,21]],"date-time":"2026-04-21T00:00:00Z","timestamp":1776729600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Nanomaterials"],"abstract":"<jats:p>Water electrolysis has emerged as a strategically appealing route for the sustainable production of green hydrogen (H2) via the hydrogen evolution reaction (HER), though the sluggish kinetics of the oxygen evolution reaction (OER) remains a bottleneck hindering large-scale practical applications. In this regard, an attractive solution is offered by the integration of the ethanol oxidation reaction (EOR) into hybrid water-splitting systems, favorably reducing anodic overpotentials. Nonetheless, an open challenge is related to the fabrication of eco-friendly and economically viable catalysts free from noble metals, combining efficiency and stability. Herein, we explore nickel-oxide-based nanostructures grown onto porous Ni foam scaffolds by a scalable hydrothermal (HT) approach as EOR electrocatalysts. Material properties arising from modulation of the sole HT growth time are investigated by complementary structural, microscopic, and spectroscopic techniques. Electrochemical tests demonstrate good durability and very attractive EOR performances, mainly influenced by the morphology and the NiOOH surface content of the target systems. Overall, the present work advances an attractive route to transition-metal-based electrocatalysts for efficient alcohol-oxidation-assisted water electrolysis.<\/jats:p>","DOI":"10.3390\/nano16080496","type":"journal-article","created":{"date-parts":[[2026,4,22]],"date-time":"2026-04-22T09:01:24Z","timestamp":1776848484000},"page":"496","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Tailoring NiO-Based Nanostructures for the Electrochemical Valorization of Ethanol: Structure\u2013Property Insights"],"prefix":"10.3390","volume":"16","author":[{"given":"Ivan","family":"Blagojevic","sequence":"first","affiliation":[{"name":"Department of Chemical Sciences, Padova University and National Interuniversity Consortium of Materials Science and Technology (INSTM), 35131 Padova, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6368-5754","authenticated-orcid":false,"given":"Chiara","family":"Maccato","sequence":"additional","affiliation":[{"name":"Department of Chemical Sciences, Padova University and National Interuniversity Consortium of Materials Science and Technology (INSTM), 35131 Padova, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3302-6499","authenticated-orcid":false,"given":"Marta","family":"De Zotti","sequence":"additional","affiliation":[{"name":"Department of Chemical Sciences, Padova University and National Interuniversity Consortium of Materials Science and Technology (INSTM), 35131 Padova, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8779-3386","authenticated-orcid":false,"given":"Davide","family":"Barreca","sequence":"additional","affiliation":[{"name":"Institute of Condensed Matter Chemistry and Technologies for Energy (CNR-ICMATE) and INSTM, Department of Chemical Sciences, Padova University, 35131 Padova, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4626-651X","authenticated-orcid":false,"given":"Alberto","family":"Gasparotto","sequence":"additional","affiliation":[{"name":"Department of Chemical Sciences, Padova University and National Interuniversity Consortium of Materials Science and Technology (INSTM), 35131 Padova, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9965-2823","authenticated-orcid":false,"given":"Raffaella","family":"Signorini","sequence":"additional","affiliation":[{"name":"Department of Chemical Sciences, Padova University and National Interuniversity Consortium of Materials Science and Technology (INSTM), 35131 Padova, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5201-8104","authenticated-orcid":false,"given":"Gian Andrea","family":"Rizzi","sequence":"additional","affiliation":[{"name":"Department of Chemical Sciences, Padova University and National Interuniversity Consortium of Materials Science and Technology (INSTM), 35131 Padova, Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,4,21]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"6146","DOI":"10.1038\/s41467-021-26355-z","article-title":"Geophysical constraints on the reliability of solar and wind power worldwide","volume":"12","author":"Tong","year":"2021","journal-title":"Nat. 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