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Preparation method and application of 2D-g-C3N4/1D-MWNTs/2D-rGO hybrid photocatalytic material

A 2d-g-c3n4, 1.2d-g-c3n4 technology, applied in the field of new energy conversion materials, to achieve the effect of improving visible light response ability, improving directional transmission ability, and simple operation

Active Publication Date: 2020-12-04
JIANGSU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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  • Preparation method and application of 2D-g-C3N4/1D-MWNTs/2D-rGO hybrid photocatalytic material
  • Preparation method and application of 2D-g-C3N4/1D-MWNTs/2D-rGO hybrid photocatalytic material
  • Preparation method and application of 2D-g-C3N4/1D-MWNTs/2D-rGO hybrid photocatalytic material

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Experimental program
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Effect test

Embodiment 1

[0035] (1) MWNTs pretreatment: Add 1 g of MWNTs to 100 mL of concentrated nitric acid, heat and stir at 80 °C for 12 h, then centrifuge, wash and dry to obtain MWNTs with rich surface defects.

[0036] (2) Preparation of 2D-1D CN / MWNTs complex (CNM-3):

[0037] The CN and pretreated MWNTs were mixed and ground for 30 min at a ratio of 10:3, so that the CN and MWNTs were in uniform contact. The secondary calcination temperature was 500 °C, so that CN could connect with defects on the surface of MWNTs to form CNM-3 complexes during the further polycondensation process.

[0038] (3) Preparation of 2D-1D-2D CN / MWNTs / rGO (CNMC-1) composite:

[0039] 200 mg of the sample obtained in (2) and 2 mg of GO were added to 50 mL of deionized water, stirred vigorously for 10 min, hydrothermally reacted at 150 °C for 5 h, and finally washed, centrifuged and dried to obtain CNMC-1.

[0040] (4) Take 0.02g of the CNMC-1 composite photocatalyst in (3) and add it to the photochemical reaction i...

Embodiment 2

[0042] (1) MWNTs pretreatment: Add 1 g of MWNTs to 100 mL of concentrated nitric acid, heat and stir at 80 °C for 12 h, then centrifuge, wash and dry to obtain MWNTs with rich surface defects.

[0043] (2) Preparation of 2D-1D CN / MWNTs complex (CNM-3):

[0044] The CN and pretreated MWNTs were mixed and ground for 30 min at a ratio of 10:3, so that the CN and MWNTs were in uniform contact. The secondary calcination temperature was 500 °C, so that CN could connect with defects on the surface of MWNTs to form CNM-3 complexes during the further polycondensation process.

[0045] (3) Preparation of 2D-1D-2D CN / MWNTs / rGO (CNMC-2) composite:

[0046] 200 mg of the sample obtained in (2) and 6 mg of GO were added to 50 mL of deionized water, stirred vigorously for 10 min, hydrothermally reacted at 150 °C for 5 h, and finally CNMC-2 was obtained by washing, centrifuging and drying.

[0047] (4) Take 0.02g of the CNMC-2 composite photocatalyst in (3) and add it to the photochemical r...

Embodiment 3

[0049] (1) MWNTs pretreatment: Add 1 g of MWNTs to 100 mL of concentrated nitric acid, heat and stir at 80 °C for 12 h, then centrifuge, wash and dry to obtain MWNTs with rich surface defects.

[0050] (2) Preparation of 2D-1D CN / MWNTs complex (CNM-3):

[0051] The CN and pretreated MWNTs were mixed and ground for 30 min at a ratio of 10:3, so that the CN and MWNTs were in uniform contact. The secondary calcination temperature was 500 °C, so that CN could connect with defects on the surface of MWNTs to form CNM-3 complexes during the further polycondensation process.

[0052] (3) Preparation of 2D-1D-2D CN / MWNTs / rGO (CNMC-3) composite:

[0053] 200 mg of the sample obtained in (2) and 10 mg of GO were added to 50 mL of deionized water, stirred vigorously for 10 min, hydrothermally reacted at 150 °C for 5 h, and finally CNMC-3 was obtained by washing, centrifuging and drying.

[0054] (4) Take 0.02g of the CNMC-3 composite photocatalyst in (3) and add it to the photochemical ...

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Abstract

The invention belongs to the technical field of new energy conversion materials, and provides a preparation method and application of a 2D-g-C3N4 / 1D-MWNTs / 2D-rGO hybrid photocatalytic material. The preparation method comprises the following steps: preparing g-C3N4 by using a calcining method, grinding and calcining the g-C3N4 and pretreated MWNTs to prepare 2D-g-C3N4 / 1D-MWNTs, and finally, carrying out hydrothermal treatment to obtain the 2D-g-C3N4 / 1D-MWNTs / 2D-rGO composite material. The 2D-g-C3N4 / 1D-MWNTs / 2D-rGO composite material with an efficient multi-dimensional multi-interface electron transport mechanism is prepared through a simple preparation means and a simple operation process, is used for the process of photocatalytic conversion of CO2 molecules into carbon-based fuel, does notcause resource waste and secondary pollution, and is a green, environment-friendly and efficient pollution treatment photocatalyst.

Description

technical field [0001] The invention belongs to the technical field of new energy conversion materials, in particular to a 2D-g-C 3 N 4 Preparation method of / 1D-MWNTs / 2D-rGO ternary hybrid photocatalytic material and its application in photocatalysis of CO 2 Conversion of CO and CH 4 Gas fuel application. Background technique [0002] With the rapid development of economy and human society, human beings have entered a stage of high energy consumption. Therefore, research on new energy conversion and development is of great significance to the stability and sustainable development of our society. As an important carbon resource, the effective conversion and utilization of CO2 can not only effectively alleviate the current serious environmental problems such as the greenhouse effect and global warming, but also alleviate today's severe energy problems and promote the earth's carbon The recycling of resources can truly realize sustainable development. [0003] Since Profe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J35/10C01B32/40C07C1/02C07C9/04
CPCB01J27/24C01B32/40C07C1/02C07C2527/24B01J35/61B01J35/39C07C9/04
Inventor 李鑫王会琴蒋浩鹏高明马长畅朱志刘祺霍鹏伟
Owner JIANGSU UNIV
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