Composite nano material as well as preparation method and application thereof

A technology of composite nanomaterials and composite materials, which is applied in the field of nanomaterial applications, can solve problems such as high cost and complicated preparation procedures, and achieve the effects of short cycle, simple process and easy preparation

Active Publication Date: 2016-10-12
HANGZHOU FUYANG WEIWEN ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the present invention also provides a preparation method of the composite nanomaterial, which has simple process, large output and good repeatability, overcomes the shortcomings of complicated preparation procedures and high cost, and has more advantages in application

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  • Composite nano material as well as preparation method and application thereof

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Embodiment 1

[0024] A composite nanomaterial, composed of carbon nitride and 85wt% carbon nanofibers accounting for 15wt% of the composite material, the composite nanomaterial is in the form of a fiber, the diameter of the fiber is 10 nm, and the length is 600 nm. The specific surface area is 900m 2 / g, the pore volume is 0.3cm 3 / g, the conductivity is 6S / cm;

[0025] Wherein, the preparation method of described composite nanomaterial comprises the following steps:

[0026] (1) Solution preparation: Weigh sucrose, concentrated nitric acid, water and template agent polyethylene glycol PEG-2000 according to the weight ratio of 1:0.01:6:0.7, mix and stir evenly for 5 hours to obtain solution A; Weigh an appropriate amount of carbon and nitrogen sources, then add a certain amount of solvent methanol, and stir at room temperature for 2 hours to obtain solution B;

[0027] (2) Preparation of composite nanomaterials: First, transfer solution A to a reaction kettle lined with polytetrafluoroet...

Embodiment 2

[0029] A composite nanomaterial, composed of carbon nitride and 75wt% carbon nanofibers accounting for 25wt% of the composite material, the composite nanomaterial is in the form of a fiber, the diameter of the fiber is 10 nm, and the length is 800 nm. The specific surface area is 950m 2 / g, the pore volume is 0.35cm 3 / g, the conductivity is 6S / cm;

[0030] Wherein, the preparation method of described composite nanomaterial comprises the following steps:

[0031] (1) Solution preparation: Weigh sucrose, concentrated nitric acid, water and template agent polyethylene glycol PEG-2000 according to the weight ratio of 1:0.1:6:0.8, mix and stir evenly for 5 hours to obtain solution A; Weigh an appropriate amount of carbon and nitrogen sources, then add a certain amount of solvent methanol, and stir at room temperature for 2 hours to obtain solution B;

[0032] (2) Preparation of composite nanomaterials: first transfer the solution A to a reaction kettle with a polytetrafluoroeth...

Embodiment 3

[0034] A composite nanomaterial, composed of 30wt% carbon nitride and 70wt% carbon nanofibers, the composite nanomaterial is in the form of a fiber, the diameter of the fiber is 15 nm, and the length is 700 nm. The specific surface area is 900m 2 / g, the pore volume is 0.4cm 3 / g, the conductivity is 8S / cm;

[0035] Wherein, the preparation method of described composite nanomaterial comprises the following steps:

[0036] (1) Solution preparation: Weigh sucrose, concentrated nitric acid, water and template agent polyethylene glycol PEG-2000 according to the weight ratio of 1:0.15:5:0.8, mix and stir evenly for 6 hours to obtain solution A; Weigh an appropriate amount of carbon and nitrogen sources, then add a certain amount of solvent methanol, and stir at room temperature for 2 hours to obtain solution B;

[0037](2) Preparation of composite nanomaterials: first transfer the solution A to a reaction kettle with a polytetrafluoroethylene liner, conduct a hydrothermal reacti...

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Abstract

The invention provides a composite nano material. The composite material is prepared from the following components in percentage: 15wt%-35wt% of carbon nitride and 65wt%-85wt% of a carbon nano material; the composite nano material is fiber-shaped; the diameter of fibers is 5nm-20nm and length of the fibers is 500nm-1000nm; and the specific surface area of the material is 900m<2>/g-1000m<2>/g, the pore capacity is 0.3cm<3>/g-0.4cm<3>/g and the conductivity is 5S/cm-8S/cm. The controllable synthesis of the composite material is realized; a two-step hydrothermal method is used for synthesizing for the first time; the process has the advantages of simplicity, low cost, short period, environmental friendliness and the like and can be suitable for industrial large-scale production; when the composite material is applied to an electrode material, the output power is higher and the operation stability is better when compared with those of a microbiological fuel cell assembled by taking conventional Pt/C as a cathode catalyst; and the composite nano material is easy to prepare and low in price and lays a good foundation for commercialization of the microbiological fuel cells.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial application, and in particular relates to a composite nanomaterial and its preparation method and application. Background technique [0002] The study of nanomaterials is a frontier field in today's scientific research, and it is also a hot spot studied by many scientists all over the world. The magic and unknown aspects of nanomaterials have aroused people's widespread attention; the research and application of nanomaterials are currently hot spots and difficulties, and are also the focus of high-tech development. [0003] Carbon nitride is a new type of carbon material. In recent years, nitrogen-containing carbon materials are generally considered to be a A new material with great potential (literature Science, 2009, 323, 760-764; Journal of the American Chemical Society, 2011, 133, 20116-20119). Among them, graphitic carbon nitride (g-C 3 N 4 ) is a typical nitrogen-rich non-metallic c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/90H01M8/16B82Y30/00
CPCB82Y30/00H01M4/9083H01M8/16Y02E60/50Y02P70/50
Inventor 孙琴华
Owner HANGZHOU FUYANG WEIWEN ENVIRONMENTAL PROTECTION TECH CO LTD
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