Metal oxide/graphitic carbon nitride composite material having three-dimensional structure and preparation thereof

A composite material and three-dimensional structure technology, applied in the field of materials, can solve problems such as harmful to the experimenter and the environment, side reactions, cumbersome reaction process, etc., and achieve the effect of simple preparation method, large pore volume, and good application prospects

Active Publication Date: 2017-05-31
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has the following disadvantages: (1) Hydrazine is used as a reducing agent. In the presence of oxygen, hydrazine reacts with metal oxides and oxygen to generate nitrogen and water, which is a side reaction; (2) Hydrazine is a suspected carcinogen and explosives, harmful to experimenters and the environment; (3) The reaction process is cumbersome

Method used

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  • Metal oxide/graphitic carbon nitride composite material having three-dimensional structure and preparation thereof
  • Metal oxide/graphitic carbon nitride composite material having three-dimensional structure and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1) g-C 3 N 4 Preparation of nanosheet solutions

[0028] a. Spread 20g of white melamine powder on the bottom of a 50mL crucible, close the lid tightly, place it in a muffle furnace, raise the temperature to 600°C at a rate of 3.0°C / min, keep it warm for 2 hours, and then cool it down at a rate of 3.0°C / min. to room temperature, a pale yellow g-C 3 N 4 solid;

[0029] b. Add 0.3g of the obtained g-C 3 N 4 After the solid is ground into powder, pour it into a 250mL flat-bottomed flask, add 200mL of ultrapure water, 150W ultrasonic stripping for 3h, and centrifuge the resulting solution at 3000rpm for 5min, collect the supernatant, and remove the unstripped solid in the lower layer;

[0030] c. Evaporate the obtained supernatant on a rotary evaporator at 60°C to a volume of 50 mL to obtain g-C with a concentration of 0.1 mol / L 3 N4 Nanosheet solution;

[0031] 2) Three-dimensional structure metal oxide / g-C 3 N 4 Preparation of composite materials

[0032] a. Di...

Embodiment 2

[0038] 1) g-C 3 N 4 Preparation of nanosheet solutions

[0039] a. Spread 20g of white melamine powder on the bottom of a 50mL crucible, close the lid tightly, place it in a muffle furnace, raise the temperature to 550°C at a rate of 2.5°C / min, keep it warm for 4 hours, and then cool it down at a rate of 2.5°C / min. to room temperature, a pale yellow g-C 3 N 4 solid;

[0040] b. Add 0.1g of the obtained g-C 3 N 4 After the solid is ground into powder, pour it into a 250mL flat-bottomed flask, add 200mL of ultrapure water, 100W ultrasonic stripping for 4h, and centrifuge the resulting solution at 1000rpm for 4min, collect the supernatant, and remove the unstripped solid in the lower layer;

[0041] c. Evaporate the obtained supernatant on a rotary evaporator at 40°C to a volume of 50 mL to obtain g-C with a concentration of 0.2 mol / L 3 N 4 Nanosheet solution;

[0042] 2) Three-dimensional structure metal oxide / g-C 3 N 4 Preparation of composite materials

[0043] a. ...

Embodiment 3

[0046] 1) g-C 3 N 4 Preparation of nanosheet solutions

[0047] a. Spread 20g of white melamine powder on the bottom of a 50mL crucible, close the lid tightly, place it in a muffle furnace, raise the temperature to 580°C at a rate of 2.8°C / min, keep it warm for 3 hours, and then cool it down at a rate of 2.8°C / min. to room temperature, a pale yellow g-C 3 N 4 solid;

[0048] b. Add 0.2g of the obtained g-C 3 N 4 After the solid is ground into powder, pour it into a 250mL flat-bottomed flask, add 200mL of ultrapure water, 200W ultrasonic stripping for 1h, and centrifuge the resulting solution at 2000rpm for 3min, collect the supernatant, and remove the unstripped solid in the lower layer;

[0049] c. Evaporate the resulting supernatant on a rotary evaporator at 50°C to a volume of 50 mL to obtain g-C with a concentration of 0.05 mol / L 3 N 4 Nanosheet solution;

[0050] 2) Three-dimensional structure metal oxide / g-C 3 N 4 Preparation of composite materials

[0051] a...

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PUM

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Abstract

The invention discloses a metal oxide / graphitic carbon nitride composite material having a three-dimensional structure, and a preparation method and application thereof. The composite material is prepared by compounding g-C3N4 nanosheets and metal oxides, wherein the mass percent of the g-C3N4 nanosheets is 1-25%.The composite material obtained by the invention is prepared by taking a carbon nitride material having a graphene-like two-dimensional structure after peeling as a template, adding metal oxide precursor and stabilizer, and reacting in a high-pressure reaction kettle under the condition of stirring. Compared with a pure metal oxide, the specific surface area of the composite material is obviously increased; and the defect of the metal oxide such as high agglomeration possibility is overcome, so that the adsorption capacity is greatly improved. Thus, the composite material has favorable application prospects in the aspects of removing sulfides in diesel and the like.

Description

technical field [0001] The invention belongs to the field of material technology, and in particular relates to a three-dimensional structure metal oxide / graphite phase nitrogen carbide composite material as an adsorption material and its preparation method and application. Background technique [0002] As cars gradually become a common means of transportation for people, fuel consumption is also increasing. Due to the high-sulfur fuel oil in the process of consumption will produce SO that can form acid rain x , and acid rain will cause harm to aquatic systems, terrestrial ecosystems, human health, buildings, machinery and municipal facilities. Therefore, a very important step in the refining process of the fuel oil refining industry is to efficiently remove sulfur compounds from fuel oil. Many countries in the world have introduced the concept of "ultra-low sulfur diesel", that is, the sulfur content in diesel must be at an ultra-low level (10-15 ppm), the purpose of which...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/06B01J20/28B01J20/30C10G25/00
CPCB01J20/02B01J20/0222B01J20/0233B01J20/024B01J20/28057B01J20/28069B01J2220/4806C10G25/003C10G2300/202
Inventor 张兰张宁童萍
Owner FUZHOU UNIV
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