نتایج جستجو برای: phthalocyanine based catalysts

تعداد نتایج: 2962729  

Journal: :Journal of photochemistry and photobiology. B, Biology 2001
C Fabris G Jori F Giuntini G Roncucci

A synthetic procedure has been developed for the preparation of a Zn-phthalocyanine peripherally substituted with a dodecaborane. The absorption spectrum of the derivative is typical of the phthalocyanine chromophore. Moreover, the boronated phthalocyanine exhibits a high photosensitizing efficiency against a model biological substrate, such as N-acetyl-L-tryptophanamide, and a singlet oxygen q...

Journal: :Chinese Journal of Catalysis 2023

The manufacture of high-performance photocatalytic systems based on earth-abundant elements remains a key challenge, urging operative strategies for catalyst design. Herein, we present the construction an efficient and noble-metal-free molecular system photoreduction CO2 to CO using Cu(I) photosensitizer Co(II) phthalocyanine catalysts. It was found that perfluorination shows enhanced catalytic...

Journal: :iranian journal of chemistry and chemical engineering (ijcce) 2013
farnaz tahriri zangeneh abbas taeb khodayar gholivand saeed sahebdelfar

the kinetics of catalyst deactivation and coke formation during dehydrogenation of propane over supported pt–based catalysts and, in particular, the effect of alkali metal promoters on catalyst activity and stability were studied. the analysis of propane conversion data showed that there is an optimum level of alkali metal promoter loading for both catalyst activity and stability.a model based ...

Journal: :Materials Today Chemistry 2022

Atomically dispersed metal catalysts are interesting materials for electrocatalysis. To this end, covalent organic frameworks (COFs) offer an excellent opportunity the periodic placement of catalytically active single atoms within a porous framework. We report here synthetic strategy to series imide-linked metal-containing phthalocyanine (Pc) COFs with different contents. Electrocatalytic activ...

2017
Atsushi Suzuki Takeo Oku

For applications of magnetic devices with operating nuclear-spin-based quantum bits in quantum computing, electronic structures, and magnetic and optical properties of quadruple-decker phthalocyanines with 3d transition metals, such as scandium, yttrium, and lanthanum atoms (M3Pc4: M = Sc, Y, and La), were studied by quantum calculation using density function theory. Electron density distributi...

The present study deals with analysis of the activity of catalysts prepared by addition of different metals to Copper and Cobalt based catalysts for CO oxidation and the variation in activity caused by changes in composition. A series of catalysts were prepared with Cu:Co molar ratio 1:4 and a third metal (M= Ce, Ni, Au, Mg) was added in three different quantities. Compositions were prepared by...

2002
A. Conneely W. F. Smyth G. McMullan

The phthalocyanine dyes, Remazol Turquoise Blue G133, Everzol Turquoise Blue and Heligon Blue S4 are found to be biosorbed by Phanerochaete chrysosporium (white-rot fungi) and also metabolised by its ligninolytic extracellular enzymes resulting in dye decolourisation, formation of free copper ions and organic metabolites with ultimate extensive phthalocyanine ring breakdown. It is believed that...

Journal: :IEICE Transactions 2006
Tetsuya Taima Toshihiro Yamanari Kohjiro Hara Kazuhiro Saito

We succeeded to fabricate p-n heterojunction and bulkheterojunction small-molecular-weight organic thin-film solar cells by combination of dry (p-type = zinc phthalocyanine, n-type = fullerene) and wet (p-type = tetra-tert-butyl zinc phthalocyanine, n-type = [6,6]-phenylC61-buteric acid methyl ester) processes. Relationship between morphologies of semiconducting layers and photovoltaic properti...

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