Results 121 to 130 of about 44,529 (307)

Mechanisms of the Aqueous Photodegradation of Polycyclic Aromatic Hydrocarbons

open access: yes, 2016
The role of O2 and photoionization as well as the involvement of polycyclic aromatic hydrocarbon (PAH) cation radicals (P+) in the photodegradation of nine PAHs was examined.
Matthew P. Fasnacht (2729077)   +1 more
core   +1 more source

Engineering Halide Perovskites With Chalcogen‐Based Compounds: Insights Into Stability, Interfaces, and Device Integration

open access: yesCarbon Energy, EarlyView.
Chalcogen‐based compounds are explored as versatile tools to enhance the stability and performance of halide perovskites. Their roles in defect passivation, ion migration suppression, and interface engineering are analyzed, along with impacts on device efficiency.
Atanu Jana   +4 more
wiley   +1 more source

Estudo de fotodegradação do pesticida clorpirifós [PDF]

open access: yes, 2014
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Programa de Pós-graduação em Química, Florianópolis, 2014A indústria química, em particular, é considerada pela sociedade em geral, como um dos ...
Pereira, Claudia
core  

Dual‐Functional Polystyrene‐Based Borate Complexes: Recyclable Alkyl Radical Sources and Photodegradable Absorbents

open access: yesChemistry – A European Journal, EarlyView.
Dual‐functional polystyrene‐based polymers bearing 2,2′‐(pyridine‐2,6‐diyl)diphenol (PDP) moieties form photoexcitable alkyl borate complexes: (i) As recyclable radical sources, they enable Giese‐type additions with facile purification by reprecipitation and demonstrate proof‐of‐concept for polymer recovery (50% PDP regeneration).
Nami Jimba   +9 more
wiley   +1 more source

Development of photocatalysis‐membrane separation reactor systems for aqueous pollutant removal

open access: yesPhotoMat, EarlyView., 2023
Abstract Background In our rapidly expanding society, the demand for clean water has steadily emerged as one of the most critical issues, promoting the development of numerous water treatment strategies. Aims Coupling photocatalysis and membrane separation technology provides an energy saving and environment‐friendly as well as sustainable method for ...
Junyang Zhang   +3 more
wiley   +1 more source

Zinc oxide-catalyzed UV-photodegradation of cyhalothrin: A kinetic analysis [PDF]

open access: yes
In this study, we present kinetic studies of the photodegradation of cyhalothrin (CyH) under ultraviolet (UV) irradiation and the photocatalytic activity of zinc oxide (ZnO) in UV-assisted photodegradation.
Omolo, Josiah Ouma   +2 more
core   +1 more source

Photoinduced ROS Production by Poly(3‐hexylthiophene) (P3HT) is due to Autoxidation Rather Than Catalysis

open access: yesChemistry – A European Journal, EarlyView.
P3HT is widely treated as a photocatalyst that generates ROS under light. We show otherwise: ROS production comes at the expense of the polymer itself. Photoexcited P3HT acts as a self‐sacrificial photosubstrate, undergoing irreversible autoxidation during light‐driven oxygen reduction—a distinction critical for interpreting its behavior in emerging ...
Roman Gańczarczyk   +2 more
wiley   +1 more source

Monitoring of phenol photodegradation by ultraviolet spectroscopy

open access: yes, 2003
International audienceAdvanced oxidation processes (AOPs) have been developed as an emerging technology for hazardous organic treatment in industrial wastewater.
Gonzalez, Catherine   +2 more
core   +1 more source

A Stable Isopterin Mimic of a Potent Bacterial Stimulant of T Cells

open access: yesChemistry – A European Journal, EarlyView.
A microbial metabolite covalently binds immunological protein MR1 to potently activate specific lymphocytes called MAIT cells, but it is too unstable for biological applications. Here, using synthesis, assays, protein crystallography, and computer modelling, we report a water‐stable analogue that activates reporter cells expressing the MAIT T cell ...
Jeffrey Y. W. Mak   +9 more
wiley   +1 more source

Phosphanyl Radicals From Bismuth‐Mediated Reactions and Sterically Encumbered Diphosphanes

open access: yesChemistry – A European Journal, EarlyView.
Reactions of LiPR2 with BiCl3 selectively give diphosphanes R2P–PR2 in high yields, presumably via Bi─P homolysis. This includes challenging cases with bulky substituents R. Sterically encumbered diphosphanes release persistent phosphanyl radicals [PR2]• in thermally initiated equilibrium reactions.
Sascha Reith   +3 more
wiley   +1 more source

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