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A kind of three-dimensional carbon nanomaterial and its preparation method and application

A carbon nanomaterial, three-dimensional technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the high requirements of water treatment process, troublesome separation and desorption treatment, difficult to process modular products, etc. It is easy to achieve large-scale production, promote industrialization and large-scale development, and the preparation process is simple and controllable.

Active Publication Date: 2017-02-22
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of these materials exist in the form of powder, and the separation and desorption after adsorption are troublesome.
At the same time, their purification effect has high requirements on the water treatment process, which is closely related to parameters such as bulk density and purified water flow rate; in addition, these powder purification materials are not easy to process into module products

Method used

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  • A kind of three-dimensional carbon nanomaterial and its preparation method and application
  • A kind of three-dimensional carbon nanomaterial and its preparation method and application
  • A kind of three-dimensional carbon nanomaterial and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Preparation of catalyst precursor (nickel-copper oxalate nanofibers):

[0036] Take 2.6g of nickel nitrate hexahydrate and 0.7g of nickel-copper trihydrate respectively, dissolve them in 30mL of ethanol to form solutions A and B, then titrate solution B in solution A under magnetic stirring, and transfer the obtained suspension to Store in an autoclave at 120°C for 12 hours. The finally obtained product was rinsed with deionized water and dried at 80° C. to obtain nickel copper oxalate.

[0037] (2) Transfer of the catalyst precursor to the graphite felt substrate: the graphite felt was first pretreated by thermal activation at 420°C for 12 hours in air; nickel-copper oxalate was deposited on the graphite felt substrate by the impregnation method. Disperse 0.2 g of nickel-copper oxalate into 60 mL of ethanol by alternating sonication to form a dispersion suspension. The activated graphite felt was immersed in the obtained suspension for 15 min, and then the graphi...

Embodiment 2

[0041] Preparation of catalyst precursor (iron oxide nanorods):

[0042] (1) Take 3.3g of ferric nitrate and 1.2g of sodium hydroxide respectively, dissolve them in 30mL of ethanol to form solutions A and B, then titrate solution B in solution A under magnetic stirring, and transfer the obtained suspension to high pressure Kettle, 120 ℃ for 12h. The finally obtained product was rinsed with deionized water, dried at 80° C., and calcined in air for 4 hours to obtain iron oxide nanorods.

[0043](2) Transfer of the catalyst precursor to the graphite felt substrate: the graphite felt was first pretreated by thermal activation at 420°C for 12 hours in air; the iron oxide nanorods were deposited on the graphite felt substrate by impregnation. Disperse 0.2 g of iron oxide nanorods into 60 mL of ethanol by alternating sonication to form a dispersion suspension. The activated graphite felt was immersed in the obtained suspension for 15 min, and then the graphite felt was taken out an...

Embodiment 3

[0047] For the preparation of CNF / GF compound, control its reaction time to be 60min, the preparation method is the same as embodiment 1, and the compound GNF / GF that the reaction time is 60min is obtained, and the BET surface area of ​​embodiment 3 is 72.2m 2 / g.

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Abstract

The invention discloses a three-dimensional carbon nano material and a preparation method and application thereof, the carbon nano material is prepared as follows: (1) preparation of a catalyst precursor, to be more specific, the catalyst precursor is iron oxide nanorod or copper nickel oxalate nanofiber; (2) transfer of the catalyst precursor to a support substrate, to be more specific, first, the support substrate is thermally activated in the air at 300 to 500 DEG C for 6-48h for pretreatment, and the catalyst precursor is deposited on the support substrate by impregnation method; and (3) preparation of a supported graphene nanosheet or supported carbon nano fiber by methane thermal catalytic deposition by use of the iron oxide nanorod or copper nickel oxalate nanofiber as the precursor. The composite material has excellent adsorption properties of heavy metal ions and organic dye molecules in water, and meets various requirements of water purification materials.

Description

technical field [0001] The invention relates to a preparation method of a three-dimensional composite carbon nanometer material and its application for removing heavy metals and organic dye molecules in water, belonging to the field of water treatment. Background technique [0002] With the large-scale development and utilization of water resources and the increasingly serious environmental pollution, especially the pollution of heavy metal ions and organic dye molecules in industrial sewage, new requirements have been put forward for the purification of drinking water resources. Heavy metal ion pollution in water is mainly due to heavy metal wastewater (containing chromium, cadmium, copper, mercury, nickel, zinc and other heavy metal ions) produced in industrial production processes such as mining and metallurgy, machinery manufacturing, chemical industry, electronics, and instrumentation. If waste water containing heavy metal ions is used as fertilizer and irrigated farmla...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/02B82Y30/00B82Y40/00
Inventor 申益张智珲肖凯军代佳丽
Owner SOUTH CHINA UNIV OF TECH
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