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A class of copper-based nano/micro composite particles and its preparation method and application

A composite particle, copper-based technology, applied in nanotechnology, nanotechnology, chemical instruments and methods, etc., can solve the problems of long time required for photocatalytic degradation of organic pollutants, unfavorable large-scale industrial production, complex cost of raw materials, etc. Achieve excellent antibacterial and catalytic properties, good application prospects, and easy washing and separation effects

Active Publication Date: 2021-03-19
JINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The existing methods for preparing copper-based composite particles have the following disadvantages: the raw materials used are complex and expensive, and toxic reducing agents are often required; the operation steps are complicated, which is not conducive to large-scale industrial production, and the obtained copper-based composite particles are resistant to organic pollutants. The photocatalytic degradation takes a long time and the degradation is not complete

Method used

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  • A class of copper-based nano/micro composite particles and its preparation method and application
  • A class of copper-based nano/micro composite particles and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Preparation method of copper-based oxide composite particles:

[0034] (1) Accurately measure 40.0mL PEG-400 and weigh (0.8000g) 4.0mmol Cu(CH 3 COO) 2 ·H 2 O in a 100mL flask that has been washed and dried, heated to 170°C in an oil bath, stirred and reacted at this temperature for 30 minutes, then cooled to room temperature naturally, washed and centrifuged twice with deionized water, and then washed with absolute ethanol Centrifuge, and finally dry in a 60°C oven to obtain solid spherical powder CuO / Cu 2 The composite particles of O are referred to as sample 1-1, and the average particle diameter is 100 nm.

[0035] (2) According to the operation procedure of above-mentioned (1), change the reaction time into 2h, 4h, 5h, 6h, 9h, 10h and 12h respectively to carry out the experiment, and the products obtained are respectively recorded as samples 1-2, 1-3, 1-4, 1-5, 1-6, 1-7 and 1-8, the obtained product 1-2 is spherical cuprous oxide and cubic cuprous oxide mixed p...

Embodiment 2

[0039] Preparation method of copper-based oxide composite particles:

[0040] (1) Accurately weigh (0.8000g) 4.0mmol Cu(CH 3 COO) 2 ·H 2 O and measure 20mL of deionized water in a beaker, stir to dissolve and pour into a 100mL flask filled with 40.0mL PEG-400. The volume ratio of water to PEG is 50%, and the oil bath is heated to 120°C. After stirring and reacting for 10 minutes, cool naturally to room temperature, wash and centrifuge the product twice with deionized water, then wash and centrifuge with absolute ethanol, and finally put it in a 60°C oven to dry to obtain solid powder copper-based oxide (CuO) The composite particles are referred to as sample 2-1, with an average particle diameter of 155 nm.

[0041] (2) According to the operation procedure of above-mentioned (1), change the reaction time into 1h, 2h, 4h, 6h successively, carry out the experiment, make solid powdery copper-based oxide composite particles, denote respectively as sample 2-2, 2 -3, 2-4 and 2-5,...

Embodiment 3

[0046] Preparation method of copper-based sulfide composite particles:

[0047] Accurately measure 7 groups of raw materials, each group of raw materials includes 40.0mL PEG-400 and (0.8000g) 4.0mmol Cu(CH 3 COO) 2 ·H 2 O, placed in a washed and dried 100mL flask, and then adding copper-sulfur molar ratios of 1:0.1, 1:0.25, 1:0.5, 1:0.75, 1:1, 1:2, 1:3, that is, 0.0128g, 0.0321g, 0.0642g, 0.0963g, 0.1280g, 0.2600g, 0.4000g of sublimed sulfur, heating the oil bath to 120°C, stirring magnetically at this temperature for 2h and then cooling to room temperature naturally, the product Wash and centrifuge twice with deionized water first, then wash and centrifuge with absolute ethanol, and finally put it into a 60°C oven for drying. Obtain solid powdery copper-based sulfide composite particles, respectively marked as samples 3-1, 3-2, 3-3, 3-4, 3-5, 3-6 and 3-7, wherein the synthesis of sample 3-1 The product is irregular flaky Cu with an average particle size of 1000 nm 2 S, C...

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Abstract

The invention discloses a type of copper-based nano / micron composite particles and their preparation methods and applications. The invention uses polyethylene glycol as a green solvent, modifier and reducing agent, uses copper salts such as copper acetate monohydrate as raw materials, and adopts a one-step method to prepare copper-based composite particles with good dispersion at different times and temperatures, and Study the photocatalytic performance of the product under visible light irradiation. The equipment used in the invention is simple and the raw materials are abundant, which can reduce costs and provide experimental and theoretical basis for its industrial development and application. The prepared composite particles can quickly degrade organic pollutants under visible light and are useful in photocatalysis, biomedicine and organic synthesis. The field has broad application prospects.

Description

technical field [0001] The invention belongs to the field of metal composite materials, in particular to a class of copper-based nano / micro composite particles and a preparation method and application thereof. Background technique [0002] In recent years, metal oxide and metal sulfide nanoparticles have become a research hotspot due to their diversity in structure, particle size and morphology, which have unique physical and chemical properties and potential application prospects. Nano-CuO is widely used in gas sensors, magnetoresistance materials, field emission, nanofluids, electrode materials, and catalytic materials. Nano-Cu 2 O has widespread applications in solar cells, gas detection, photocatalysis, carbon monoxide oxidation, photocatalytic hydrogen production from water, and photoelectric response. Nano-Cu particles have unique surface plasmon resonance in the visible region, which can be used to prepare highly selective colorimetric sensors, and also used in the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G3/02C01G3/12B82Y30/00B82Y40/00B01J27/04
CPCB82Y30/00B82Y40/00C01G3/02C01G3/12B01J27/04C01P2002/72C01P2004/03C01P2004/64B01J35/39
Inventor 谢新媛邓润康郑文杰
Owner JINAN UNIVERSITY
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