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Cuprous oxide nanowire array composite carbon nitride loaded copper mesh composite material and preparation method and application thereof

A nanowire array and composite material technology is applied to cuprous oxide nanowire array composite carbon nitride supported copper mesh composite material and its preparation and application fields, and can solve the problems of poor product stability, long time consumption, complicated preparation process and the like , to achieve the effect of reduced material synthesis time, simple preparation method and simplified process flow

Inactive Publication Date: 2020-06-12
广东鼎诚电子科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method effectively overcomes the existing graphene layer-encapsulated cuprous oxide nanowire array composite gold-copper nanoalloy (Au-Cu / graphene / Cu 2 O) The preparation process is complex, time-consuming, poor product stability and other disadvantages

Method used

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  • Cuprous oxide nanowire array composite carbon nitride loaded copper mesh composite material and preparation method and application thereof
  • Cuprous oxide nanowire array composite carbon nitride loaded copper mesh composite material and preparation method and application thereof
  • Cuprous oxide nanowire array composite carbon nitride loaded copper mesh composite material and preparation method and application thereof

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Effect test

Embodiment 1

[0037] 1. A composite carbon nitride-supported copper mesh based on cuprous oxide nanowire arrays (g-C 3 N 4 / Cu 2 (Nano wire array / copper mesh) preparation of composite nanomaterial, concrete steps are as follows:

[0038] 1) Cu(OH) 2 Preparation of nanowire array / copper mesh: clean copper yarn was subjected to constant current (10mA cm -2 ) was anodized in 3mol / L sodium hydroxide solution for 700s.

[0039] 2) Cu 2 Preparation of O nanowire arrays / copper mesh: Cu(OH) 2 The nanowire array / copper mesh was annealed at 520 °C for 3 h in an argon atmosphere.

[0040] 3) g-C 3 N 4 / Cu 2 Preparation of O nanowire array / copper mesh: First, 2,4-diamino-6-phenyl-1,3,5-triazine (9 g) and cyanuric acid (6.5 g) were dissolved in 200 mL deionized water, Stir magnetically at room temperature for 24 h. Next, the mixed suspension was subjected to suction filtration to achieve solid-liquid separation. The white solid was dried in a blast oven at 60 °C for 8 h. Then, the dried whi...

Embodiment 2

[0053] A composite carbon nitride-supported copper mesh based on cuprous oxide nanowire arrays (g-C 3 N 4 / Cu 2 (Nano wire array / copper mesh) preparation of composite nanomaterial, concrete steps are as follows:

[0054] 1) Cu(OH) 2 Preparation of nanowire array / copper mesh: clean copper yarn was subjected to constant current (5mA cm -2 ) were anodized in 2mol / L sodium hydroxide solution for 500s.

[0055] 2) Cu 2 Preparation of O nanowire arrays / copper mesh: Cu(OH) 2 The nanowire array / copper mesh was annealed at 500°C for 2h in an argon atmosphere.

[0056] 3) g-C 3 N 4 / Cu 2 Preparation of O nanowire arrays / copper meshes: First, 2,4-diamino-6-phenyl-1,3,5-triazine (8 g) and cyanuric acid (5 g) were dissolved in 200 mL deionized water, at room temperature Under magnetic stirring for 24h. Next, the mixed suspension was subjected to suction filtration to achieve solid-liquid separation. The white solid was dried in a blast oven at 50 °C for 6 h. Then, the dried wh...

Embodiment 3

[0062] A composite carbon nitride-supported copper mesh based on cuprous oxide nanowire arrays (g-C 3 N 4 / Cu 2 (Nano wire array / copper mesh) preparation of composite nanomaterial, concrete steps are as follows:

[0063] 1) Cu(OH) 2 Preparation of nanowire array / copper mesh: clean copper yarn was subjected to constant current (15mA cm -2 ) were anodized in 4mol / L sodium hydroxide solution for 1000s.

[0064] 2) Cu 2 Preparation of O nanowire arrays / copper mesh: Cu(OH) 2 The nanowire array / copper mesh was annealed at 550°C in an argon atmosphere for 5h.

[0065] 3) g-C 3 N 4 / Cu 2 Preparation of O nanowire array / copper mesh: First, 2,4-diamino-6-phenyl-1,3,5-triazine (10 g) and cyanuric acid (8 g) were dissolved in 200 mL of deionized water, at room temperature Under magnetic stirring for 24h. Next, the mixed suspension was subjected to suction filtration to achieve solid-liquid separation. The white solid was dried in a blast oven at 70°C for 10 h. Then, the dried...

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Abstract

The invention discloses a cuprous oxide nanowire array composite carbon nitride loaded copper mesh composite material and a preparation method and application thereof. The preparation method comprisesthe following steps: (1) carrying out anodic polarization on clean copper yarns in a sodium hydroxide solution by adopting constant current to prepare a Cu (OH) 2 nanowire array / copper mesh; (2) carrying out high-temperature annealing treatment on the Cu (OH) 2 nanowire array / copper net under the protection of an inert atmosphere to prepare a Cu2O nanowire array / copper net; (3) uniformly spreading graphite-like phase carbon nitride precursor powder on the surface of the Cu2O nanowire array / copper net, putting the Cu2O nanowire array / copper net into a tubular furnace, introducing nitrogen, heating to 480-520 DEG C, and keeping the temperature for 3-5 hours; and after cooling, taking out the sample, and carrying out ultrasonic treatment in water to obtain the target product. The operation process is simple, the material synthesis time is obviously shortened, and the feasibility is high. In addition, the composite material is applied to photocatalytic preparation of methanol, the cost islow, and the yield of the prepared methanol is high.

Description

technical field [0001] The present invention constructs a composite carbon nitride-loaded copper network based on cuprous oxide nanowire arrays (g-C 3 N 4 / Cu 2 O nanowire array / copper mesh) composite nanomaterial system, realized the reduction of carbon dioxide to produce methanol through the photocatalytic method. Background technique [0002] With the rapid development of global industrialization, the energy shortage and global warming caused by the consumption of fossil energy pose a serious threat to human beings. For humans, realizing an artificial carbon cycle is a thorny global problem. Using solar energy to achieve the reduction of carbon dioxide into high value-added solar energy through artificial photosynthesis is considered to be an efficient and promising strategy to solve the energy crisis and environmental pollution. Since 1979, Inoue et al. reported the photocatalytic reduction of carbon dioxide for the first time. Since then, a large number of such as:...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J23/72B01J35/00B01J37/08B01J37/34C07C29/15C07C31/04
CPCB01J27/24B01J23/72B01J37/348B01J37/08B01J37/082C07C29/15B01J35/39C07C31/04Y02P20/52
Inventor 牛利韩冬雪赵欣
Owner 广东鼎诚电子科技有限公司
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