نتایج جستجو برای: semiconductor catalysis

تعداد نتایج: 87342  

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2000
mohammad hossein habibi majid mir mohammad sadeghi

a method for the degradation of pyrrolidine in water is described. the method relaies on the photocatalytic degradation of pyrrolidine to co2 and nh3 by uv irradiation and using titanium dixide semiconductor as a photocatalyst. compared with direct photolysis, the semiconductor catalytic photolysis gave consistently higher degradation yields for pyrrolidine in water. the effects of variable par...

2014
Axel G Griesbeck Melissa Reckenthäler

The homogeneous titanium- and dye-catalyzed as well as the heterogeneous semiconductor particle-catalyzed photohydroxymethylation of ketones by methanol were investigated in order to evaluate the most active photocatalyst system. Dialkoxytitanium dichlorides are the most efficient species for chemoselective hydroxymethylation of acetophenone as well as other aromatic and aliphatic ketones. Pina...

Journal: :Chem 2021

Photochemistry has been developed as a powerful tool for organic transformations, such photoredox catalysis, photocycloaddition, and photoisomerization. Traditional photochemistry relies on molecular photosensitizers. Recently in Chem Catalysis, Weiss colleagues applied semiconductor nanoparticles photosensitizers to drive [2 + 2] cycloaddition of aryl-conjugated dienes with high chemo- ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1387

boron nitride semiconducting zigzag swcnt, $b_{cb}$$n_{cn}$$c_{1-cb-cn}$, as a potential candidate for making nanoelectronic devices was examined. in contrast to the previous dft calculations, wherein just one boron and nitrogen doping configuration have been considered, here for the average over all possible configurations, density of states (dos) was calculated in terms of boron and nitrogen ...

Journal: :Current opinion in green and sustainable chemistry 2021

Fundamental aspects of light-driven water splitting are reviewed with emphasis on the kinetics and mechanism oxygen hydrogen evolution reactions at semiconductor photoelectrodes. Information provided by in operando techniques is discussed related to mechanisms catalysis.

Journal: :Nanoscale 2015
Sangku Kwon Seon Joo Lee Sun Mi Kim Youngkeun Lee Hyunjoon Song Jeong Young Park

The electrical nature of the nanoscale contact between metal nanodots and semiconductor rods has drawn significant interest because of potential applications for metal-semiconductor hybrid nanostructures in energy conversion or heterogeneous catalysis. Here, we studied the nanoscale electrical character of the Pt/CdSe junction in Pt/CdSe/Pt nanodumbbells on connected Au islands by conductive-pr...

Journal: :Chemical communications 2014
Kamil Kotwica Piotr Bujak Damian Wamil Mariusz Materna Lukasz Skorka Piotr A Gunka Robert Nowakowski Barbara Golec Beata Luszczynska Malgorzata Zagorska Adam Pron

Indanthrone, an old, insoluble dye can be converted into a solution processable, self-assembling and electroluminescent organic semiconductor, namely tetraoctyloxydinaptho[2,3-a:2',3'-h]phenazine (P-C8), in a simple one-pot process consisting of the reduction of the carbonyl group by sodium dithionite followed by the substitution with solubility inducing groups under phase transfer catalysis co...

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