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Composite nano cuprous oxide/zinc oxide material with photocatalytic performance as well as preparation method and application thereof

A composite, photocatalytic technology, applied in catalyst activation/preparation, chemical instruments and methods, nanotechnology for materials and surface science, etc., can solve the problems of poor stability and high cost of single cuprous oxide photocatalyst, achieve Eliminate the influence of impurities, facilitate large-scale production, and the effect of simple preparation methods

Active Publication Date: 2019-11-22
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the defects in the above-mentioned prior art, the present invention discloses a composite nano-Cu with photocatalytic properties 2 O / ZnO material and its preparation method and application, the preparation method of the composite material is simple, easy to operate, and is conducive to large-scale production; it solves the problems of high cost, serious photocorrosion phenomenon, and poor stability of a single cuprous oxide photocatalyst

Method used

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  • Composite nano cuprous oxide/zinc oxide material with photocatalytic performance as well as preparation method and application thereof
  • Composite nano cuprous oxide/zinc oxide material with photocatalytic performance as well as preparation method and application thereof
  • Composite nano cuprous oxide/zinc oxide material with photocatalytic performance as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Step 1: Add 0.172 g of CuCl 2 2H 2 O, the PVP (dodecylpyrrolidone) of 3.3g and the Na of 0.1g 3 C 6 h 5 0 7 2H 2 O, 100mL H 2 O was added to a 250mL three-necked flask, and the three-necked flask was placed in a constant temperature water tank at 55°C, and stirred evenly to completely dissolve the solid; while stirring, 10mL of NaOH solution with a concentration of 0.6mol / L was added dropwise, and after the addition was completed, the Continue to react at ℃ for 30 min; add 10 mL of C with a concentration of 2 mol / L dropwise. 6 h 8 0 6 Solution, after the dropwise addition, continue to react at 55°C for 30min; turn off the stirring, let it stand at 55°C for 3h, wash the obtained precipitate with distilled water and absolute ethanol alternately for 3 times, and then dry to obtain tetradecahedral structure Cu 2 O powder;

[0039] Step 2: Add 0.2g Cu 2 Add O powder and 0.5g PVP into 25mL distilled water, ultrasonically disperse for 30 minutes, then add 0.15g zin...

Embodiment 2

[0042] Step 1: Add 0.172 g of CuCl 2 2H 2 O, the PVP (dodecylpyrrolidone) of 3.3g and the Na of 0.1g 3 C 6 h 5 0 7 2H 2 O, 100mL H 2 O was added to a 250mL three-necked flask, and the three-necked flask was placed in a constant temperature water tank at 45°C, and stirred evenly to completely dissolve the solid; while keeping stirring, 10mL of NaOH solution with a concentration of 0.6mol / L was added dropwise. Continue to react at ℃ for 30 min; add 10 mL of C with a concentration of 2 mol / L dropwise. 6 h 8 0 6 Solution, after the dropwise addition, continue to react at 45°C for 30min; turn off the stirring, let stand at 45°C for 3h, wash the obtained precipitate with distilled water and absolute ethanol alternately for 3 times, and then dry to obtain tetradecahedral structure Cu 2 O powder;

[0043] Step 2: Add 0.2g Cu 2 Add O powder and 0.5g PVP into 25mL distilled water, ultrasonically disperse for 30 minutes, then add 0.15g zinc acetate, and stir thoroughly to obt...

Embodiment 3

[0046] Step 1: Add 0.172 g of CuCl 2 2H 2 O, the PVP (dodecylpyrrolidone) of 3.3g and the Na of 0.1g 3 C 6 h 5 0 7 2H 2 O, 100mL H 2 O was added to a 250mL three-necked flask, and the three-necked flask was placed in a constant temperature water tank at 65°C, and stirred evenly to completely dissolve the solid; while keeping stirring, 10mL of NaOH solution with a concentration of 0.6mol / L was added dropwise, and after the addition was completed, the Continue to react at ℃ for 30 min; add 10 mL of C with a concentration of 2 mol / L dropwise. 6 h 8 0 6 Solution, after the dropwise addition, continue to react at 65°C for 30min; turn off the stirring, let stand at 65°C for 3h, wash the obtained precipitate with distilled water and absolute ethanol alternately for 3 times, and then dry to obtain tetradecahedral structure Cu 2 O powder;

[0047] Step 2: Add 0.2g Cu 2 Add O powder and 0.5g PVP into 25mL distilled water, ultrasonically disperse for 30 minutes, then add 0.15...

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PUM

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Abstract

The invention discloses a composite nano Cu2O / zinc oxide (ZnO) material with photocatalytic performance as well as a preparation method and application thereof, and belongs to the technical field of material preparation. A novel visible light catalyst is obtained. Nanometer zinc oxide particles are loaded on the surfaces of tetradecahedron cuprous oxide to form a heterostructure, rapid transportation and separation of photo-induced electrons and holes are effectively promoted, and the problems that a single cuprous oxide photocatalyst is high in cost, serious in photo-corrosion phenomenon, poor in stability and the like are solved. The preparation method of the composite material is simple, convenient to operate and beneficial to large-scale production.

Description

technical field [0001] The invention belongs to the technical field of material preparation and environmental treatment, in particular to a composite nano-cuprous oxide (Cu 2 O) / zinc oxide (ZnO) material and its preparation method and application. Background technique [0002] With the rapid development of modern industry, the problem of environmental pollution is becoming more and more serious. Among them, the problem of water pollution is particularly serious. Since 1972, TiO 2 Since the discovery of semiconductor photocatalytic water splitting, semiconductor photocatalytic technology has developed rapidly in the treatment of water pollution. Cu 2 O is a typical metal-deficient P-type narrow-bandgap semiconductor material with a bandgap of Eg=2.17eV. It can trigger photocatalytic reactions under visible light. It has unique optical properties and is economical, convenient and efficient. . Compared with the traditional photocatalytic material TiO 2 Its forbidden band ...

Claims

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Application Information

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IPC IPC(8): B01J23/80B01J37/10B01J35/10B01J37/16B01J37/34B82Y30/00B82Y40/00C02F1/30C02F101/30C02F101/34C02F101/38
CPCB01J23/80B01J37/10B01J37/16B01J37/343B82Y30/00B82Y40/00C02F1/30C02F2101/34C02F2101/38C02F2101/308C02F2101/40C02F2305/10B01J35/61B01J35/39Y02W10/37
Inventor 黄凤萍周鑫敏刘博学辛萌李春花
Owner SHAANXI UNIV OF SCI & TECH
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