Results 81 to 90 of about 158,830 (405)

Impacts of aerosol direct effects on tropospheric ozone through changes in atmospheric dynamics and photolysis rates

open access: yesAtmospheric Chemistry and Physics, 2017
Aerosol direct effects (ADEs), i.e., scattering and absorption of incoming solar radiation, reduce radiation reaching the ground and the resultant photolysis attenuation can decrease ozone (O3) formation in polluted areas.
J. Xing   +10 more
semanticscholar   +1 more source

Cu‐Based MOF/TiO2 Composite Nanomaterials for Photocatalytic Hydrogen Generation and the Role of Copper

open access: yesAdvanced Functional Materials, EarlyView.
HKUST‐1/TiO2 composite materials show a very high photocatalytic hydrogen evolution rate which increases as a function of the irradiation time until reaching a plateau and even surpasses the performance of the 1%Pt/TiO2 material after three photocatalytic cycles.
Alisha Khan   +9 more
wiley   +1 more source

Photodegradation of Methylene Blue Solution via Au Doped TiO2 Nanocomposite Catalysts Prepared Using Novel Photolysis Method [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2019
Gold doped TiO2 has been successfully synthesized via the photolysis method and is characterized by different techniques. NPs of gold doped TiO2 were utilized for the degradation of methylene blue as a material pigmentation pollutant. The substitution of
Zaid Hamid Mahmoud
doaj  

The photolysis of ammonia [PDF]

open access: yesProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1940
It has been shown in the preceding paper that the hypothesis that hydrazine is responsible for the anomalously low hydrogen atom concentration in the decomposition of ammonia must be abandoned. In order to explain this important discrepancy some new experimental techniques require to be developed which will settle the matter without appeal to further ...
H. W. Melville, E. A. B. Birse
openaire   +1 more source

Upconversion-like Photolysis of BODIPY-Based Prodrugs via a One-Photon Process.

open access: yesJournal of the American Chemical Society, 2019
Photochemical reactions at lower energy than the absorption window are currently achieved by multi-photon processes, including two-photon absorption and photon upconversion, which have limited energy utilization efficiency.
Wen Lv   +8 more
semanticscholar   +1 more source

Light‐Activatable Hyaluronic Acid‐Derivatives Releasing Nitric Oxide and Their Delivery in the Skin

open access: yesAdvanced Healthcare Materials, EarlyView.
This work explores the development of photoactivatable hyaluronic acid (HA) derivatives functionalized with nitric oxide (NO) photodonors for light‐controlled therapeutic applications. The HA derivatives demonstrate enhanced keratinocyte proliferation and migration, effective NO release, and skin penetration when formulated as microemulsions.
Giuseppe Longobardi   +7 more
wiley   +1 more source

Concentrated Platinum‐Gallium Nanoalloy for Hydrogen Production from the Catalytic Steam Reforming of Ethanol

open access: yesChemCatChem, Volume 15, Issue 1, January 9, 2023., 2023
Bimetallic nanoalloy: Establishment of a bimetallic PtGa nanoalloy supported on MCF‐17 for SRE study at varying temperatures. Higher concentration Ga resulted in the highest formation rate of H2 (3047.2 nmol g−1 sec−1). Ga in electron deficit state in the Pt90Ga10/MCF‐17 enhanced acidity and dehydrogenating properties, which resulted in the highest ...
Mohit Yadav   +9 more
wiley   +1 more source

New Insight on Carbon Dioxide‐Mediated Hydrogen Production**

open access: yesChemistryOpen, 2022
A new approach to hydrogen production from water is described. This simple method is based on carbon dioxide‐mediated water decomposition under UV radiation.
Prof. Dr. Antoni W. Morawski   +11 more
doaj   +1 more source

UV photolysis, organic molecules in young disks, and the origin of meteoritic amino acids [PDF]

open access: yesIcarus 212 / 885-895, 2011, 2011
The origin of complex organic molecules such as amino acids and their precursors found in meteorites and comets is unknown. Previous studies have accounted for the complex organic inventory of the Solar System by aqueous chemistry on warm meteoritic parent bodies, or by accretion of organics formed in the interstellar medium.
arxiv   +1 more source

Generation mechanism of hydroxyl radical species and its lifetime prediction during the plasma-initiated ultraviolet (UV) photolysis

open access: yesScientific Reports, 2015
Through this work, we have elucidated the mechanism of hydroxyl radicals (OH•) generation and its life time measurements in biosolution. We observed that plasma-initiated ultraviolet (UV) photolysis were responsible for the continues generation of OH ...
P. Attri   +8 more
semanticscholar   +1 more source

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