نتایج جستجو برای: cocatalyst

تعداد نتایج: 432  

Journal: :Scientific reports 2015
Honglin Li Ke Yu Chao Li Zheng Tang Bangjun Guo Xiang Lei Hao Fu Ziqiang Zhu

The MoS2 and reduced graphite oxide (rGO) composite has attracted intensive attention due to its favorable performance as hydrogen evolution reaction (HER) catalyst, but still lacking is the theoretical understanding from a dynamic perspective regarding to the influence of electron transfer, as well as the connection between conductivity and the promoted HER performance. Based on the first-prin...

2015
Bin Wang Maochang Liu Zhaohui Zhou Liejin Guo

Pt nanoparticles with tunable size are prepared on the entire surface of facet-engineered Cu2WS4 decahedral photocatalyst via a kinetic-controlled chemical reduction process. The {101} facets of the photocatalyst which featured photo-oxidation, are successfully activated for photoreduction by Pt. The resulting photocatalyst shows an activity nine times higher compared to that of the only {001}-...

Journal: :Dalton transactions 2010
Anna Sachse Serhiy Demeshko Sebastian Dechert Venita Daebel Adam Lange Franc Meyer

New derivatives of pyrazolate-based binucleating ligands HL with appended imine functions have been synthesized to provide a versatile set of ligand systems with different backbone substituents both at the pyrazole-C(4) and the imine-C (H, Me, Ph). These scaffolds have two adjacent coordination compartments akin to the alpha-diimine type. A series of binuclear palladium(II) complexes [LPd(2)Cl(...

Ali Sibevei Mohammad Mahdi Mortazavi Saied Ahmadjo, Zahra Naji Azimi

This paper considers the problem of selecting the most appropriate ethylene propylene diene monomer (EPDM), which is a polyolefin with a variety of usages in different areas. The metallocene catalyst, bis(2-phenyl indenyl) zirconium dichloride ((2-PhInd)2ZrCl2) was synthesized by a modified method and applied to the terpolymerization of ethylene, propylene, and 5-ethylidiene-2-norbornene (ENB)....

Journal: :Catalysts 2023

Surface passivation engineering is an imperative way to improve photoelectrode performance for photoelectrochemical (PEC) water splitting. To the best of our knowledge, it has never been systematically reviewed in a feature article. In this review, we summarize various materials and their preparation, characterizations by PEC measurements some related spectral technologies. We highlight feature...

Journal: :ACS applied energy materials 2021

A semiconductor–catalyst hybrid assembly for photocatalytic water oxidation was obtained by preparing CoFe Prussian blue particles on Dion–Jacobson type niobate nanosheets, which produces a p–n junction, as evidenced the Mott–Schottky plot. The material with precious-metal-free cocatalyst exhibits an enhanced activity (89.5 μmol g–1 h–1) in presence of S2O82– electron scavenger. XPS, infrared, ...

Journal: :ChemistrySelect 2022

Novel salts based on 1,3-dibutyl-4-(2-hydroxyphenyl)-1H-imidazolium bromide or iodide have been developed as bifunctional organocatalysts for the cycloaddition reaction of epoxides and isocyanates to form 3,4- 3,5-disubstituted oxazolidin-2-ones. The molecular structure these compounds was determined spectroscopically confirmed by X-ray diffraction analysis. Imidazolium were screened catalysts ...

Journal: :Physical chemistry chemical physics : PCCP 2015
Yanjuan Sun Zaiwang Zhao Fan Dong Wei Zhang

Semimetal bismuth (Bi), as an emerging non-noble metal-based cocatalyst and plasmonic photocatalyst, has attracted significant attention. In this work, a one-pot solvent-controlled synthesis strategy was utilized for the in situ-deposition of plasmonic Bi nanoparticles onto the surfaces of (BiO)2CO3 microspheres (BOC-WE) using bismuth citrate, sodium carbonate, and ethylene glycol as precursors...

Journal: :Chemical science 2017
Alberto Martinez-Cuezva Adrian Saura-Sanmartin Tomas Nicolas-Garcia Cristian Navarro Raul-Angel Orenes Mateo Alajarin Jose Berna

En route to a photoswitchable interlocked catalyst we have proved the ability of thiodiglycolamide to act as a template in the formation of hydrogen-bonded [2]rotaxanes. X-ray diffraction studies reveal the shielding of the sulfide atom by the macrocycle. A series of molecular shuttles are described as having an isomerizable fumaramide and thiodiglycolamide binding sites for controlling the rel...

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