Assessing the Photocatalytic Degradation of Penconazole on TiO2 in Aqueous Suspensions: Mechanistic and Ecotoxicity Studies in Aerated and Degassed Systems DOI Open Access

Attila Szekely,

Erzsébet Szabó‐Bárdos,

Orsolya Fónagy

et al.

Catalysts, Journal Year: 2024, Volume and Issue: 14(12), P. 898 - 898

Published: Dec. 7, 2024

Penconazole (C12H15Cl2N3) is widely used to prevent fungal infection of fruits. Since this toxic fungicide recalcitrant biological degradation, it has harmful impacts on aquatic ecosystems. TiO2-based heterogeneous photocatalysis proved be an efficient method for its mineralization. To monitor the processes occurring under influence illumination, light absorbance, pH, and TOC samples were measured. The concentration model compound degradation products determined by HPLC IC. did not decompose UV (λmax = 371 nm) without a catalyst. In presence TiO2, mineralization took place. initial rate in air (7.7 × 10−4 mM s−1) was 5 times higher than argon. formation hydrochloric acid (1.04 10−3 former case significantly contributed acidification liquid phase. NH4+ also formed, at 5.9 s−1, very slightly transformed NO3−. Due intermediates identified HPLC-MS, hydroxylation, H abstraction, Cl elimination are involved mechanism, which photogenerated HO● radicals, conduction-band electrons, (under air) superoxide radical anions (O2●−) play considerable roles. much less penconazole.

Language: Английский

Facile Synthesis and Optimization of Graphitic Carbon Nitride Nanoparticles to Effectively Photodegrade Tetracycline under Visible Light in Water DOI Creative Commons

Shih-Ru Huang,

Kok-Hou Tan, Rama Shanker Sahu

et al.

ACS Agricultural Science & Technology, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 21, 2025

Language: Английский

Citations

0
Assessing the Photocatalytic Degradation of Penconazole on TiO2 in Aqueous Suspensions: Mechanistic and Ecotoxicity Studies in Aerated and Degassed Systems DOI Open Access

Attila Szekely,

Erzsébet Szabó‐Bárdos,

Orsolya Fónagy

et al.

Catalysts, Journal Year: 2024, Volume and Issue: 14(12), P. 898 - 898

Published: Dec. 7, 2024

Penconazole (C12H15Cl2N3) is widely used to prevent fungal infection of fruits. Since this toxic fungicide recalcitrant biological degradation, it has harmful impacts on aquatic ecosystems. TiO2-based heterogeneous photocatalysis proved be an efficient method for its mineralization. To monitor the processes occurring under influence illumination, light absorbance, pH, and TOC samples were measured. The concentration model compound degradation products determined by HPLC IC. did not decompose UV (λmax = 371 nm) without a catalyst. In presence TiO2, mineralization took place. initial rate in air (7.7 × 10−4 mM s−1) was 5 times higher than argon. formation hydrochloric acid (1.04 10−3 former case significantly contributed acidification liquid phase. NH4+ also formed, at 5.9 s−1, very slightly transformed NO3−. Due intermediates identified HPLC-MS, hydroxylation, H abstraction, Cl elimination are involved mechanism, which photogenerated HO● radicals, conduction-band electrons, (under air) superoxide radical anions (O2●−) play considerable roles. much less penconazole.

Language: Английский

Citations

0