20.500.12556/RUL-185024 Photocatalytic degradation of PFOA : defluorination, toxicity assessment and catalyst regeneration research data underlying the article Per- and polyfluoroalkyl substances (PFAS) represent a large group of over 12000 variants of synthetic fluorine compounds widely used since the 1950s. Owing to their widespread use and the exceptional strength of the C−F bonds, these compounds have started to accumulate in the environment and resist conventional degradation processes. In this work, we investigate the chemical-free photocatalytic degradation and defluorination of perfluorooctanoic acid (PFOA) using platinum-modified titanium dioxide (Pt−TiO$_2$). The effects of various parameters (Pt modification, light intensity and initial PFOA concentration) on photocatalytic efficiency were investigated. The photocatalysts have been extensively characterized, including their structural, morphological, surface-chemical, thermal, and optical properties. LC-MS/MS analysis confirmed breakdown of PFOA molecules by chain-shortening. Although released fluoride ions may contribute to increase in toxicity, the tests show reduced overall toxicity during treatment, confirming environmental relevance. The synthesized Pt−TiO$_2$ demonstrated significantly higher photocatalytic activity under UV-A irradiation compared to commercial P25, achieving up to 99 % parent compound degradation and 50 % defluorination. Calcination of the catalyst removed the adsorbed fluoride species from its surface and restored its activity during reuse. PFOA photocatalysis defluorination toxicity degradation intermediates PFOA fotokataliza defluoriranje toksičnost vmesni produkti razgradnje true false false Angleški jezik Slovenski jezik Neznano 2026-07-21 10:00:00 2026-07-28 09:38:15 2026-07-29 04:03:37 0000-00-00 00:00:00 2026 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 README.txt README.txt README 1 20405166621FC650E44D7E9BC46E257E 76154516fbe5dc2cdc434e7b585aa10a31dc8c7681788cc6a5332d64fde1da88 b5f8df95-8985-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=243434 DRS.zip DRS.zip DRS 1 6B899972179E430883068E207D0712C9 b5382e9f86a50e8486fc5b99294d3c0a08aac325a4639c197b3f3febd0fd5ad7 cd549886-8983-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=243428 XRD.zip XRD.zip XRD 1 76B6DD42812A68485166E7057EFEEB09 652fee39d695e1f109c5d64cf262d57a3b2171d5522131c4150b3c0917889d8a cd6c99a7-8983-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=243429 BET.zip BET.zip BET 1 C4D682121BF1BA9701E6FEAD5E11AE77 e3ba8d09b44787a141f3ae3329d3382d50cf8c126d419589f91342fa2915e68e cd7d7ada-8983-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=243430 XPS.zip XPS.zip XPS 1 65F6760E4D2B2819B08F395A61A113D5 e8554d3454c2bb3ff5ef0cc229936e48117b01a37d371bc66ad7bef2cfb54463 cd8e4ec2-8983-11f1-9b0d-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=243431 Fakulteta za kemijo in kemijsko tehnologijo Meritve in testi Photocatalytic degradation of PFOA Photocatalytic degradation of PFOA 0 0 0