20.500.12556/DiRROS-25343 Ferroelectric ▫$KNbO_3$▫ nanoplatelets for thermally driven pyrocatalytic hydrogen evolution and dye degradation Day and night shift-induced thermal cycling offers a promising route toward free energy for green hydrogen production and dye degradation. Pyroelectric materials make this possible by converting temperature fluctuations into electrical charges that drive water splitting catalytic reactions and produce hydrogen fuel. Herein, we demonstrate an efficient pyrocatalytic hydrogen evolution reaction and Rhodamine B (RhB) degradation using ferroelectric potassium niobate (KNbO3) perovskite nanoplatelets (KN-np) with an orthorhombic phase. Under thermal cycling between 20 and 50 °C, KN-np produced a high hydrogen yield of 680 μmol·g–1 over 30 thermal cycles, with an average hydrogen generation rate of approximately 22.67 μmol g–1 per thermal cycle. Besides, KN-np pyrocatalytic activity enabled efficient degradation of the RhB dye up to 84 % after only 16 cycles with a high kinetic rate constant of 0.11 per thermal cycle. Our findings show that the excellent pyroelectric properties of KN-np are at the origin of the catalytic activity enhancement. This work lays the foundation for the future design of pyroelectric materials for clean energy production and environmental remediation. pyrocatalysis nanoplatelets clean energy production dye degradation pirokataliza proizvodnja čiste energije true false true Elsevier Nizozemska Angleški jezik Slovenski jezik © 2025 The Author(s). Neznano 2026-01-16 12:03:45 2026-01-16 12:03:45 2026-01-17 04:06:08 0000-00-00 00:00:00 2026 0 0 Nasl. z nasl. zaslona; Soavtorji: Nejc Suban, Hana Uršič, Zdravko Kutnjak, Brigita Rožič; Opis vira z dne 9. 9. 2025; str. 1-13 pt. C, [article no.] 136705 Vol. 405 Feb. 2026 0000-00-00 Zaloznikova Objavljeno NiDoloceno 2025-04-30 2025-09-01 2025-09-05 544.5/.6 1873-7153 10.1016/j.fuel.2025.136705 248246531 https://www.sciencedirect.com/science/article/pii/S0016236125024305?via%3Dihub 1 08e22a08-f2cb-11f0-a15d-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=38344 RAZ_Touili_Salma_2026.pdf RAZ_Touili_Salma_2026.pdf 1 2E1032C4592333F13F5732597A9B30A0 c40159b6d74cbbe1f93a60f4e49fa3c80cd3a37c472259e63f37899b09f8516e 7a4c2c18-f2cb-11f0-a15d-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=38345 Institut Jožef Stefan 0 0 0