نتایج جستجو برای: photocatalysts

تعداد نتایج: 3233  

2017
Fumiaki Amano Masako Tanaka Bunsho Ohtani

Modification of silica-supported vanadium oxide (VS) photocatalysts with alkali metal ions enhanced the photocatalytic activity of the vanadium(V) mononuclear complex for oxidative decomposition of gaseous organic compounds into carbon dioxide. Action spectrum analysis revealed that the onset wavelength for cesium-ion-modified VS was 420 nm, which was ca. 20 nm longer than that with a titania p...

Journal: :Chemical communications 2014
Ştefan Neaţu Marta Puche Vicente Fornés Hermenegildo Garcia

Layered magadiite and zeolites Y containing framework Co or small CoO clusters in the pores have been synthesized and tested as photocatalysts for water splitting, in the absence and presence of methanol, upon UV or simulated sunlight irradiation; the best performing material was Co-magadiite.

Journal: :Chemical communications 2010
Matthias Georg Schwab Manuel Hamburger Xinliang Feng Jie Shu Hans Wolfgang Spiess Xinchen Wang Markus Antonietti Klaus Müllen

Three-dimensional conjugated poly(azomethine) networks were found to be promising candidates for applications in photocatalytic water splitting. Straightforward synthetic protocols lead to fully organic photocatalysts that showed enhanced long-time stability. Furthermore, the catalytic performance of these materials was correlated to the molecular composition and the optoelectronic properties o...

Journal: :Natural and Applied Sciences Journal 2019

Journal: :IOP Conference Series: Materials Science and Engineering 2013

Journal: :Nanophotonics 2023

Abstract There is a pressing global need to increase the use of renewable energy sources and limit greenhouse gas emissions. Towards this goal, highly efficient molecularly selective chemical processes that operate under mild conditions are critical. Plasmonic photocatalysis uses optically-resonant metallic nanoparticles their resulting plasmonic, electronic, phononic light-matter interactions ...

Journal: :Applied Surface Science 2022

The high recombination rate of photogenerated carriers is the bottleneck photocatalysis, severely limiting photocatalytic efficiency. Here, we develop a dipole-scheme (D-scheme for short) model and materials realization from first-principles dipole calculations. D-scheme heterojunction not only can effectively separate electrons holes by large polarization fields, but also boosts redox reaction...

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