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A method for preparing flower-shaped aupt alloy nanoparticles in a deep eutectic solvent and its application in electrooxidative synthesis of xanthones

A technology of alloy nanoparticles and xanthone, which is applied in the field of preparing flower-shaped AuPt alloy nanoparticles, achieves the effects of mild reaction conditions, easy operation, and reduced viscosity

Inactive Publication Date: 2020-04-21
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are no reports on the synthesis of alloy nanomaterials in deep eutectic solvents

Method used

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  • A method for preparing flower-shaped aupt alloy nanoparticles in a deep eutectic solvent and its application in electrooxidative synthesis of xanthones
  • A method for preparing flower-shaped aupt alloy nanoparticles in a deep eutectic solvent and its application in electrooxidative synthesis of xanthones
  • A method for preparing flower-shaped aupt alloy nanoparticles in a deep eutectic solvent and its application in electrooxidative synthesis of xanthones

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Experimental program
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Effect test

Embodiment 1

[0027] Step S1: recrystallize choline chloride with absolute ethanol, filter and vacuum dry for later use, and dry ethylene glycol in a vacuum oven for later use before use, and choline chloride and ethylene glycol are mixed according to the molar ratio of 1:2 Proportional mechanical mixing, stirring at 80°C until a uniform, colorless and transparent solution, and then placing the above solution in a vacuum drying oven at 80°C for 24 hours to obtain the choline chloride-ethylene glycol deep eutectic solvent;

[0028] Step S2: The electrochemical synthesis of AuPt alloy nanoparticles was carried out in a standard three-electrode system using a glassy carbon electrode (GCE, 15 mm × 10 mm × 1 mm) as the working electrode, a platinum wire as a counter electrode, and a platinum wire as a quasi-electrode. As a reference electrode, before electrodeposition, the glassy carbon electrode was first polished with alumina powder with a particle size of 1.0 μm, 0.3 μm, and 0.05 μm, rinsed wi...

Embodiment 2

[0031]Add 0.3mmol xanthene, 1.5mmol tetrabutylammonium tetrafluoroborate, 7.5mL acetonitrile and 0.5mL water together into a dry integrated electrolytic cell (15mL) equipped with a stirring magnet, and place in an open environment at room temperature The reaction was carried out under the following conditions, and the reaction system was not dehydrated and deoxygenated before the reaction. The prepared flower-shaped AuPt alloy nanoparticles modified glassy carbon electrode (AuPt NFs / GCE, 10mm×10mm×1mm) was used as the anode, the glassy carbon electrode was used as the cathode and The Ag / AgCl electrode is used as a reference electrode, and the three electrodes are inserted into the above-mentioned electrolytic cell and connected to a potentiostat to form an experimental device. At a constant 0.80V (vs.Ag / AgCl) potential (the potentiostat operates in constant potential mode), Under an open environment at room temperature, the reaction mixture was stirred and electrolyzed for 16 h...

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Abstract

The invention discloses a method for preparing flower-like AuPt alloy nanoparticles in a deep eutectic solvent with simple synthesis process, green reaction system and mild reaction conditions, and electrooxidative synthesis using the prepared flower-like AuPt alloy nanoparticles to modify electrodes. A new method of xanthone, this new electro-organic synthesis method is carried out at room temperature and in an open environment, the reaction conditions are very mild and environmentally friendly, and the yield of synthetic xanthone is high.

Description

technical field [0001] The invention belongs to the technical field of alloy nanomaterials and electro-oxidation synthesis, and in particular relates to a method for preparing flower-shaped AuPt alloy nanoparticles in a deep eutectic solvent and the application of the electro-oxidation synthesis of xanthone. Background technique [0002] In recent years, electroorganic synthesis has emerged as a well-defined, versatile, and environmentally friendly method for the oxidation / reduction of organic compounds as an alternative to traditional organic synthesis methods. Compared with traditional methods, electrooxidation methods have many advantages, such as high tolerance of functional groups, mild experimental conditions, and inherent scalability and sustainability. Recently, the application of electrochemical oxidative synthesis in electroorganic synthesis has received great attention. Baran et al. have developed some new sustainable methods and strategies by utilizing redox med...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25C5/00B22F1/00C25B3/02C25B11/06B82Y40/00C25B3/23
CPCC25C5/00B82Y40/00C25B3/23C25B11/097B22F1/0553B22F1/054
Inventor 卓克垒李奡麒段婉怡刘建明陈玉娟孙东王春风
Owner HENAN NORMAL UNIV
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