نتایج جستجو برای: magnetic heterogeneous nanocatalyst

تعداد نتایج: 462271  

2017
Pascal Brault Erik Neyts Erik C. Neyts

Magnetron sputtering is a widely used physical vapor deposition technique for deposition and formation of nanocatalyst thin films and clusters. Nevertheless, so far only few studies investigated this formation process at the fundamental level. We here review atomic scale molecular dynamics simulations aimed at elucidating the nanocatalyst growth process through magnetron sputtering. We first in...

Journal: :H2Open journal 2022

Abstract Iron nanocatalyst for its potential application as Fenton's catalyst the degradation of methylene blue dye was synthesized with fruit extract Citrus maxima using bioleached laterite iron a precursor. Synthesized particles were characterized suitably and their catalytic role in rhodamine B by oxidation evaluated. The exhibits heterogeneous properties efficiency 93.6 91.3%, respectively....

The acidic agent (SO3H) was stabilized on the silica coated Fe3O4 magnetic nanoparticles to produce Fe3O4@SiO2@Pr-SO3H, as a heterogeneous acidic catalyst, was designed, and then fully studied and characterized by FT-IR, XRD, TGA, DTA, TEM, and SEM analysis. Subsequently, the catalytic activity of Fe3O4...

Journal: :Chemical communications 2012
Yuling Cui Huafeng Chen Dianping Tang Huanghao Yang Guonan Chen

A novel and redox-active nanocatalyst, Au(III)-promoted polyaniline gold nanosphere (GPANG), was designed as the nanolabel for highly efficient electrochemical immunoassay of human IgG by coupling with electrocatalytic recycling of self-produced reactants.

Journal: :Angewandte Chemie 2023

The selective hydrogenation of benzofurans in the presence a heterogeneous non-noble metal catalyst is reported. developed optimal catalytic material consists cobalt-cobalt oxide core–shell nanoparticles supported on silica, which has been prepared by immobilization and pyrolysis cobalt-DABCO-citric acid complex silica under argon at 800 °C. This novel allows for simple functionalized to 2,3-di...

Journal: :Silicon 2021

In the present study, a hollow MgO/SiO2 nanocatalyst with high alkaline properties was prepared. This heterogeneous catalyst prepared in several steps to create great active area and decrease density of catalyst. The framework applied for reaction cyclohexanone, malononitrile benzaldehyde synthesis 1 H-isocromene therough Michael addition aldol condensation at room temperature. this method, all...

Journal: :Chemical communications 2010
Ning Yan Jiaguang Zhang Yuan Yuan Guang-Tao Chen Paul J Dyson Zi-Chen Li Yuan Kou

Two thermoresponsive polymers based on alkyl modified poly-vinylpyrrolidone (PVP) that exhibit very sensitive and reversible temperature-dependant water solubility are described. The application of these polymers as Au nanocatalyst stabilizers leads to a "smart" thermoresponsive Au nanoparticle catalyst.

اعظمی گیلان, رؤیا , شکوهی, رضا , ملا محمودی, محمد ,

Background and purpose: Bisphenol A is an estrogenic substance that can cause endocrine dysfunction, which extensively enters water resources due to its large use in industry. The aim of this study was to synthesis modified magnetic nanoparticles with sodium alginate and study of its efficiency for removal of Bisphenol A from aqueous solutions using heterogeneous fenton process. Materials an...

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