20.500.12556/RUL-182045 Titanium oxynitride-supported Ru nanoparticles as exceptional electrocatalysts for alkaline hydrogen evolution reaction We present a novel and highly efficient catalyst for the hydrogen evolution reaction (HER) consisting of low-loaded Ru nanoparticles dispersed on a titanium oxynitride-graphene oxide (Ru/TiON-C) support. Ru/TiON-C with a Ru loading of only 6 wt% is significantly more active for HER in alkaline media than the Ru/C analog. More importantly, Ru/TiON-C outperforms the Pt/C benchmark both intrinsically (2.5 times higher turnover frequency) and in terms of metal utilization (4.5 times higher mass activity). The exceptional HER activity of Ru/TiON-C is related to the metal–support interaction (MSI) induced by TiON, which was experimentally evidenced by X-ray photoelectron spectroscopy and further investigated by density functional theory calculations. It can be proposed that MSI enhances water dissociation properties and tunes hydrogen adsorption energy at Ru active sites, while stability is provided by the strong anchoring of the Ru nanoparticles on the TiON. The presented strategy to develop advanced electrocatalytic composites can be extended to other metallic active sites and electrochemical reactions. hydrogen evolution reaction alkaline electrolyte ruthenium titanium oxynitride metal–support interaction DFT kemijska tehnologija reakcije izločanja vodika HER kovine elektrokemija true false true Angleški jezik Slovenski jezik Članek v reviji 2026-04-23 08:48:09 2026-04-23 08:48:09 2026-04-24 04:55:20 0000-00-00 00:00:00 2025 0 0 15 str. art. 164204 Vol. 517 1 Aug. 2025 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 66 1873-3212 10.1016/j.cej.2025.164204 241180419 1-s2.0-S1385894725050399-main.pdf 1-s2.0-S1385894725050399-main.pdf 1 FDC11565FC82148A79ED1BC6B88DE7A9 3a824fccb1c7444ffd44f12e13bb11269dc1b16e1c5d80f254f14a827f2761b7 cc7d9c24-3ee0-11f1-b0ab-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=232971 https://www.sciencedirect.com/science/article/pii/S1385894725050399 1 26694385-3ee0-11f1-b0ab-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=232970 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0