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Graphene-based flexible non-woven fabric loaded with metal-doped carbon nitride and its preparation method and application

An alkenyl flexible, metal-loaded technology, applied in chemical instruments and methods, textiles and papermaking, non-woven fabrics, etc., to achieve the effect of increasing the reaction interface, rational structure construction, and easy optimization and enhancement of photoactivity

Active Publication Date: 2021-08-31
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current research mainly focuses on the composite energy band regulation and microscopic morphology construction of graphene and carbon nitride, and there are few reports on the assembly form and related large-scale preparation of the two macroscopic materials.
Moreover, contemporary society has higher and higher requirements for portable devices. How to obtain light-weight, durable and easy-to-storage photocatalytic devices is also the current bottleneck.

Method used

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  • Graphene-based flexible non-woven fabric loaded with metal-doped carbon nitride and its preparation method and application
  • Graphene-based flexible non-woven fabric loaded with metal-doped carbon nitride and its preparation method and application
  • Graphene-based flexible non-woven fabric loaded with metal-doped carbon nitride and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] (1) Inject the graphene oxide aqueous dispersion into a coagulation bath containing 0.05 moles per liter of cobalt nitrate to obtain a graphene oxide hydrogel fiber cross-linked by cobalt ions;

[0040](2) The hydrogel fiber is filtered and washed with a solvent containing cobalt ions. The detergent solvent is a mixed solution of water and ethanol (volume ratio 1:1), and the concentration of cobalt ions in the detergent is 5 times that in the coagulation bath. After drying, obtain a graphene oxide non-woven fabric containing cobalt ions;

[0041] (3) Arrange the above non-woven fabric above the porcelain boat, add urea below, the mass ratio of urea to graphene oxide non-woven fabric is 200:1, then place the porcelain boat in a tube furnace for calcination at 580 degrees Celsius for 2 hours , to obtain a graphene-based flexible nonwoven fabric loaded with cobalt-doped carbon nitride.

[0042] The appearance of the graphene-based flexible non-woven fabric loaded with cob...

Embodiment 2

[0050] (1) Graphene oxide aqueous dispersion liquid is injected in the coagulation bath containing the zinc nitrate of 0.01 mole per liter, obtains the graphene oxide hydrogel fiber of zinc ion crosslinking;

[0051] (2) The hydrogel fiber is filtered and washed with a solvent containing zinc ions. The detergent solvent is acetone, and the concentration of zinc ions in the detergent is 10 times that in the coagulation bath. After drying, the graphene oxide nonwoven containing zinc ions is obtained. cloth;

[0052] (3) The above-mentioned non-woven is arranged on the top of the porcelain boat, and dicyandiamide is added below, and the mass ratio of dicyandiamide and graphene oxide non-woven fabric is 50:1, and then the porcelain boat is placed in a tube furnace for 550 Calcined for 5 hours in Celsius to obtain a graphene-based flexible non-woven fabric loaded with zinc-doped carbon nitride.

[0053] The zinc-doped carbon nitride-loaded graphene-based flexible non-woven fabric ...

Embodiment 3

[0056] (1) Graphene oxide aqueous dispersion liquid is injected in the coagulation bath containing the nickel nitrate of 0.1 mole per liter, obtains the graphene oxide hydrogel fiber crosslinked by nickel ions;

[0057] (2) The hydrogel fiber is filtered and washed with a solvent containing nickel ions, the detergent solvent is ethanol, the concentration of nickel ions in the detergent is the same as in the coagulation bath, and the graphene oxide nonwoven fabric containing nickel ions is obtained after drying ;

[0058] (3) The above-mentioned non-woven is arranged on the top of the porcelain boat, and cyanamide is added below, and the mass ratio of cyanamide and graphene oxide non-woven fabric is 500:1, and then the porcelain boat is placed in a tube furnace for 600 Celsius and calcined for 0.5 hour to obtain a graphene-based flexible nonwoven fabric loaded with nickel-doped carbon nitride.

[0059] The nickel-doped carbon nitride-loaded graphene-based flexible non-woven fa...

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Abstract

The invention discloses a metal-doped graphene-based flexible non-woven fabric loaded with carbon nitride and its preparation method and application. The steps are as follows: first, the graphene oxide dispersion is injected into a coagulation bath containing a certain amount of metal ions to obtain a The gel fibers linked together, and the graphene oxide non-woven fabric containing metal ions was obtained through the action of swelling-fusion, and then metal-doped carbon nitride was generated in situ on the non-woven fabric by chemical vapor deposition to obtain the metal-loaded Graphene-based flexible nonwovens doped with carbon nitride. The non-woven fabric has certain bending resistance and strong photoresponse activity, and has broad application prospects in the field of visible light catalysis. The invention promotes the practical application of graphene-based materials, expands the preparation method of photocatalytic devices, and provides beneficial assistance for the development of portable photocatalytic devices.

Description

technical field [0001] The invention belongs to the field of graphene materials, and relates to a metal-doped carbon nitride-loaded graphene-based flexible non-woven fabric and a preparation method and application thereof. Background technique [0002] Currently, among the various possibilities for exploring attractive sustainable energy and technologies, photocatalytic technology is considered to be the most attractive for directly harvesting, converting and storing renewable solar energy to generate sustainable green energy and a wide range of environments. One application of technology with power and prospects. Heterogeneous photocatalysis on powdered semiconductors has broad applications in water splitting, environmental remediation, carbon dioxide reduction, space disinfection, and selective organic transformation. Clearly, highly efficient photocatalysts play a crucial role in determining the overall quantum efficiency of all these photocatalytic reaction systems. Ca...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/4209D06C7/04B01J35/00B01J27/24D01F9/12D01F1/10
CPCD04H1/4209D06C7/04B01J27/24D01F9/12D01F1/10B01J35/39
Inventor 黄铁骑朱纪欣
Owner NANJING TECH UNIV
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