Diurnal photodegradation of fluorinated diketones (FDKs) by OH radicals using different atmospheric simulation chambers: Role of keto-enol tautomerization on reactivity

Lugo, P.; Straccia, Vianni G.; Rivela, Cynthia B.; Patroescu-Klotz, Iulia; Illmann, Niklas; Teruel, Mariano A.; Wiesen, Peter; Blanco, Marı́a B.

doi:10.1016/j.chemosphere.2021.131562

Cited by 7 publications

(1 citation statement)

References 36 publications

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“…After 10 h, the productivity of 2,5-HDN is approaching a steady state with an average activity of ∼20 μmol/h. However, the degradation of 2,5-HDN may occur under such an accumulated reaction condition, 36 which suggests the importance of separating the product from the system to obtain a high yield of 2,5-HDN.…”

Section: Preparation and Characterization Of Photocatalystsmentioning

confidence: 99%

Unraveling Structure Sensitivity in the Photocatalytic Dehydrogenative C–C Coupling of Acetone to 2,5-Hexanedione over Pt/TiO₂ Catalysts

Zhou,

Ye,

Zhao

et al. 2023

ACS Catal.

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Structure sensitivity is the phenomenon where the activity of each available active site of a catalyst varies depending on its specific structure and coordination environment. Understanding structure sensitivity can assist in the rational design of catalysts, allowing for control over activity and selectivity. Here, we demonstrate that the activity and selectivity of acetone coupling to 2,5-hexanedione (2,5-HDN), an important raw material, via a photocatalytic dehydrogenative route are highly structure sensitive and prove how the size of the supported Pt influences the catalytic performance. Under optimized conditions, the formation rate of 2,5-HDN on subnanometer Pt cluster modified anatase−TiO 2 (Pt CL /TiO 2 ) reaches 45.3 μmol/h, 1.5−9.0 times higher than the Pt NPs and Pt single-atom doped TiO 2 photocatalysts. Mechanism studies reveal that water, which is oxidized by the excited hole of the anatase semiconductor, acts as a co-catalyst in the reaction and generates hydroxyl radicals. The formed hydroxyl radicals subsequently assist the cleavage of the sp 3 C−H bond of acetone. The dimerization of the •CH 2 COCH 3 radicals delivers 2,5-HDN. The remarkable •OH radical formation capability and relatively high H-abstraction activity of the Pt CL /TiO 2 photocatalyst account for its excellent activity and selectivity over other Pt/TiO 2 catalysts.

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Section: Preparation and Characterization Of Photocatalystsmentioning

confidence: 99%

Unraveling Structure Sensitivity in the Photocatalytic Dehydrogenative C–C Coupling of Acetone to 2,5-Hexanedione over Pt/TiO₂ Catalysts

Zhou,

Ye,

Zhao

et al. 2023

ACS Catal.

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Volatile Organic Compounds Released During the Fast Pyrolysis of Peanut Shells and Environmental Implications

Aguirre

Lobos

Basto

et al. 2022

Bull Environ Contam Toxicol

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Kinetics of the reaction of OH radical with ethylfluoroacetate, ethyl 4,4,4-trifluorobutyrate, and butylfluoroacetate

Lugo,

Straccia,

Teruel

et al. 2025

Journal of Environmental Sciences

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Diurnal photodegradation of fluorinated diketones (FDKs) by OH radicals using different atmospheric simulation chambers: Role of keto-enol tautomerization on reactivity

Cited by 7 publications

References 36 publications

Unraveling Structure Sensitivity in the Photocatalytic Dehydrogenative C–C Coupling of Acetone to 2,5-Hexanedione over Pt/TiO₂ Catalysts

Unraveling Structure Sensitivity in the Photocatalytic Dehydrogenative C–C Coupling of Acetone to 2,5-Hexanedione over Pt/TiO₂ Catalysts

Volatile Organic Compounds Released During the Fast Pyrolysis of Peanut Shells and Environmental Implications

Kinetics of the reaction of OH radical with ethylfluoroacetate, ethyl 4,4,4-trifluorobutyrate, and butylfluoroacetate

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Diurnal photodegradation of fluorinated diketones (FDKs) by OH radicals using different atmospheric simulation chambers: Role of keto-enol tautomerization on reactivity

Cited by 7 publications

References 36 publications

Unraveling Structure Sensitivity in the Photocatalytic Dehydrogenative C–C Coupling of Acetone to 2,5-Hexanedione over Pt/TiO2 Catalysts

Unraveling Structure Sensitivity in the Photocatalytic Dehydrogenative C–C Coupling of Acetone to 2,5-Hexanedione over Pt/TiO2 Catalysts

Volatile Organic Compounds Released During the Fast Pyrolysis of Peanut Shells and Environmental Implications

Kinetics of the reaction of OH radical with ethylfluoroacetate, ethyl 4,4,4-trifluorobutyrate, and butylfluoroacetate

Contact Info

Product

Resources

About

Unraveling Structure Sensitivity in the Photocatalytic Dehydrogenative C–C Coupling of Acetone to 2,5-Hexanedione over Pt/TiO₂ Catalysts

Unraveling Structure Sensitivity in the Photocatalytic Dehydrogenative C–C Coupling of Acetone to 2,5-Hexanedione over Pt/TiO₂ Catalysts