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Preparation method of zero-dimensional/two-dimensional structure copper oxide and tourmaline composite photocatalytic material

A technology of composite photocatalysis and two-dimensional structure, which is applied in the field of preparation of composite photocatalytic materials of copper oxide and tourmaline with zero-dimensional/two-dimensional structure, can solve the problems of high cost and complicated preparation process, and achieve the promotion of separation and preparation process Simple, wide-ranging effects

Pending Publication Date: 2020-02-21
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims at the characteristics of complex preparation process and high cost in the current modification of copper oxide, and induces the preparation of a zero-dimensional / two-dimensional structure copper oxide and tourmaline composite photocatalytic material by introducing tourmaline

Method used

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  • Preparation method of zero-dimensional/two-dimensional structure copper oxide and tourmaline composite photocatalytic material
  • Preparation method of zero-dimensional/two-dimensional structure copper oxide and tourmaline composite photocatalytic material
  • Preparation method of zero-dimensional/two-dimensional structure copper oxide and tourmaline composite photocatalytic material

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Experimental program
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Effect test

Embodiment 1

[0019] Add 0.50 g tourmaline powder sample into 40 mL deionized water, stir magnetically for 30 min, and ultrasonically disperse for 30 min, then add 1.25 g copper acetate and stir until completely dissolved to obtain suspension A. Weigh 0.50 g of sodium hydroxide and dissolve it in 20 mL of deionized water to obtain solution B. Under magnetic stirring, solution B was added dropwise to suspension A and stirred continuously for 2 h to obtain suspension C. Finally, the suspension C was put into a 100 mL polytetrafluoroethylene reactor, reacted at 180 °C for 6 h, cooled to room temperature naturally, washed with deionized water, dried at 60 °C, and ground to obtain a zero-dimensional / two-dimensional structure oxidation Copper and tourmaline composite photocatalytic materials, in which the average size of zero-dimensional copper oxide nanoparticles is 10-20 nm, and the average size of two-dimensional copper oxide nanosheets is 200-450 nm.

Embodiment 2

[0021] Add 0.50 g tourmaline powder sample into 40 mL deionized water, stir magnetically for 30 min, and ultrasonically disperse for 30 min, then add 2.50 g copper acetate and stir until completely dissolved to obtain suspension A. Weigh 1.00 g of sodium hydroxide and dissolve it in 20 mL of deionized water to obtain solution B. Under magnetic stirring, solution B was added dropwise to suspension A and stirred continuously for 2 h to obtain suspension C. Finally, the suspension C was put into a 100 mL polytetrafluoroethylene reactor, reacted at 180 °C for 6 h, cooled to room temperature naturally, washed with deionized water, dried at 60 °C, and ground to obtain a zero-dimensional / two-dimensional structure oxidation Copper and tourmaline composite photocatalytic materials, in which the average size of zero-dimensional copper oxide nanoparticles is 15-20 nm, and the average size of two-dimensional copper oxide nanosheets is 250-480 nm.

Embodiment 3

[0023] Add 0.50 g of tourmaline powder sample into 40 mL of deionized water, stir magnetically for 30 min, and ultrasonically disperse for 30 min, then add 2.50 g of copper acetate and stir until completely dissolved to obtain suspension A. Weigh 1.00 g of sodium hydroxide and dissolve it in 20 mL of deionized water to obtain solution B. Under magnetic stirring, solution B was added dropwise to suspension A and stirred continuously for 2 h to obtain suspension C. Finally, the suspension C was put into a 100 mL polytetrafluoroethylene reactor, reacted at 160 °C for 6 h, cooled to room temperature naturally, washed with deionized water, dried at 60 °C, and ground to obtain a zero-dimensional / two-dimensional structure oxidation Copper and tourmaline composite photocatalytic material, in which the average size of zero-dimensional copper oxide nanoparticles is 10-20 nm, and the average size of two-dimensional copper oxide nanosheets is 200-420 nm.

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Abstract

The invention discloses a preparation method of a zero-dimensional / two-dimensional structure copper oxide and tourmaline composite photocatalytic material. Natural tourmaline, an alkali and metal copper salt are taken as raw materials, precipitation-hydrothermal method is adopted to prepare the copper oxide / tourmaline composite material, and the preparation method comprises the following steps: firstly, ultrasonically preparing a tourmaline / water suspension system; secondly, dissolving a copper salt into the suspension system, dropwise adding an alkaline solution, and violently stirring; and finally, putting an obtained mixed system into a reaction kettle for hydrothermal reaction, and washing, drying and grinding an obtained product to obtain the zero-dimensional / two-dimensional structurecopper oxide and tourmaline composite photocatalytic material. Due to the introduction of tourmaline, the agglomeration of two-dimensional copper oxide nanosheets can be relieved, and the photocatalytic performance of copper oxide can be effectively improved. The preparation method is simple to operate, mild in condition, low in cost and rich in raw material source, and the synthesized compositematerial has good photocatalytic activity and durability.

Description

technical field [0001] The invention relates to a method for preparing a composite photocatalytic material of zero-dimensional / two-dimensional structure copper oxide and tourmaline, in particular inducing the formation of zero-dimensional / two-dimensional structure copper oxide by tourmaline minerals. Background technique [0002] Copper oxide is a p-type semiconductor with a narrow band gap (~1.2 eV), which has great application value in photocatalytic degradation of organic pollutants, photocatalytic carbon dioxide reduction, and photocatalytic water splitting. The factors that limit the photocatalytic performance of copper oxide mainly include (1) the rapid recombination of photogenerated electron / hole pairs; (2) nano-copper oxide has a high surface energy, so it is easy to form a large bulk structure due to adhesion, The exposure of active sites on the surface of the material is reduced. At present, the research on copper oxide modification mainly includes the constructi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/72B01J35/10C02F1/30C02F101/38C02F101/36
CPCB01J23/72C02F1/30C02F2101/38C02F2101/36C02F2101/40C02F2305/10B01J35/60B01J35/39
Inventor 尹艳红余昌强吴子平刘先斌黎业生
Owner JIANGXI UNIV OF SCI & TECH
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