نتایج جستجو برای: heterogeneous nanocatalyst

تعداد نتایج: 126495  

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.

Journal: :Catalysts 2023

Alarming environmental changes and the threat of natural fuel resource extinction are concerning issues in human development. This has increased scientists’ efforts to phase out traditional energy resources move on environmentally friendly biofuels. In this study, non-edible castor oil was transesterified with methanol using a manganese-doped zinc oxide (Mn-doped ZnO) nanocatalyst. A heterogene...

Journal: :Chemical communications 2013
Juan Tang Jun Zhou Qunfang Li Dianping Tang Guonan Chen Huanghao Yang

Platinum-cerium oxide hybrid nanocatalysts (CeO(2)-Pt) were for the first time designed as bionanolabels for highly efficient electrochemical immunosensing of low-abundance proteins coupling nanocatalyst-based redox cycling with in situ signal amplification strategy.

Preparation of 4-aminiquinaldine grafted on silica-coated nano-Fe3O4 particles (Fe3O4@SiO2-AQ) as a novel retrievable heterogeneous nanocatalyst is described. This novel hybrid nanomaterial was applicated for the green synthesis of substituted 2-amino-4H-chromenes via the one-pot condensation reaction of an aldehyde, malononitrile ...

2010
Yang Liu Chai Lor Qiang Fu David Pan Lei Ding Jie Liu Jennifer Lu

Self-assembled solution micelles prepared from polystyrene-b-poly(4-vinylpyridine) (PS-b-P4VP) and polystyrene-b-poly(2-vinylpyridine) (PS-b-P2VP), have been employed as templates to synthesize copper nanocatalysts which are regarded as an excellent catalyst system for 1D nanomaterial synthesis. We have demonstrated that uniform-sized nanoparticles with diameters ranging from 1 to 15 nm have be...

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