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Transition metal doped g-C3N4 powder and preparation method thereof

A transition metal, g-c3n4 technology, applied in chemical instruments and methods, chemical/physical processes, physical/chemical process catalysts, etc., can solve problems such as large environmental pollution, achieve small environmental pollution, high specific surface area, and reduce production. cost effect

Active Publication Date: 2019-07-19
WUHAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The removal of the template generally requires the use of strong acid, etc., which causes great pollution to the environment.

Method used

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  • Transition metal doped g-C3N4 powder and preparation method thereof
  • Transition metal doped g-C3N4 powder and preparation method thereof
  • Transition metal doped g-C3N4 powder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A transition metal doped g-C 3 N 4 Powder and its preparation method. The specific steps of the preparation method described in this embodiment are:

[0027] According to the nitrogen-containing compound: the mass ratio of the transition metal inorganic salt is 1:0.01~0.018, the nitrogen-containing compound and the transition metal inorganic salt are mixed to obtain a mixture; then the solid-liquid ratio is 16.8~17.8g / L, Add the mixture into organic solvent I, stir for 1-3 hours, and hydrothermally treat it at 150-180°C for 60-80 hours; then wash it with organic solvent II for 3-5 times, filter it with suction, and dry it at 60-80°C for 8 ~10h, the transition metal doped g-C 3 N 4 complex precursors.

[0028] Step 2. Transition metal doping g-C 3 N 4 Powder preparation

[0029] Under protective atmosphere conditions, the transition metal is doped with g-C at a rate of 5-8°C / min 3 N 4 The complex precursor is heated to 450-480°C and kept for 2-4 hours to prepar...

Embodiment 2

[0036] A transition metal doped g-C 3 N 4 Powder and its preparation method. The specific steps of the preparation method described in this embodiment are:

[0037] According to the nitrogen-containing compound: the mass ratio of the transition metal inorganic salt is 1:0.018~0.026, the nitrogen-containing compound and the transition metal inorganic salt are mixed to obtain a mixture; then the solid-liquid ratio is 17.6~18.6g / L, Add the mixture into organic solvent I, stir for 1-3 hours, and hydrothermally treat it at 150-180°C for 60-80 hours; then wash it with organic solvent II for 3-5 times, filter it with suction, and dry it at 60-80°C for 8 ~10h, the transition metal doped g-C 3 N 4 complex precursors.

[0038] Step 2. Transition metal doping g-C 3 N 4 Powder preparation

[0039] Under protective atmosphere conditions, the transition metal is doped with g-C at a rate of 5-8°C / min 3 N 4 The complex precursor is heated to 480-510°C and kept for 2-4 hours to prepa...

Embodiment 3

[0046] A transition metal doped g-C 3 N 4 Powder and its preparation method. The specific steps of the preparation method described in this embodiment are:

[0047] According to the nitrogen-containing compound: the transition metal inorganic salt mass ratio is 1: 0.026~0.034, the nitrogen-containing compound and the transition metal inorganic salt are mixed to obtain a mixture; then the solid-liquid ratio is 18.4~19.4g / L, Add the mixture into organic solvent I, stir for 1-3 hours, and hydrothermally treat it at 150-180°C for 60-80 hours; then wash it with organic solvent II for 3-5 times, filter it with suction, and dry it at 60-80°C for 8 ~10h, the transition metal doped g-C 3 N 4 complex precursors.

[0048] Step 2. Transition metal doping g-C 3 N 4 Powder preparation

[0049] Under protective atmosphere conditions, the transition metal is doped with g-C at a rate of 5-8°C / min 3 N 4 The complex precursor is heated to 510-540°C and kept for 2-4 hours to prepare tra...

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Abstract

The invention relates to transition metal doped g-C3N4 powder and a preparation method thereof. According to the technical scheme, the preparation method comprises the steps of: preparing and mixing anitrogen-containing compound and an transition metal inorganic salt according to a mass ratio of 1:(0.01-0.05) to obtain a mixture; adding the mixture into an organic solvent I according to a solid-liquid ratio of 16.8-21.0 g / L, conducting stirring, carrying out hydrothermal treatment for 60-80 hours at a temperature of 150-180 DEG C, conducting washing with an organic solvent II, carrying out suction filtration, and conducting drying for 8-10 hours at a temperature of 60-80 DEG C to obtain a transition metal doped g-C3N4 complex precursor; and finally, heating the transition metal-doped g-C3N4complex precursor to 450-600 DEG C at a rate of 5-8 DEG C / min under the condition of protective atmosphere, and carrying out heat preservation for 2-4 hours to obtain the transition metal-doped g-C3N4 powder, wherein the organic solvent I is the same as the organic solvent II. The method is low in cost, simple in process and environment-friendly; and the prepared product has the characteristicsof excellent photoresponse capability, good conductivity, controllable structural morphology and high specific surface area.

Description

technical field [0001] The invention belongs to the field of powder technology. Specifically related to a transition metal doped g-C 3 N 4 Powder and its preparation method. Background technique [0002] Two-dimensional materials refer to materials that electrons can only move freely (plane motion) on the nanoscale (1-100nm) in two dimensions. Due to their unique characteristics, they are used in optical and electrical devices, energy production and storage, and environmental repair. , hybrid materials, and chemical sensors. Among them, boron nitride, carbon nitride materials, graphene and molybdenum sulfide have been widely used. [0003] Graphite carbon nitride (g-C 3 N 4 ) has a graphene-like structure, adjustable energy band structure, good stability, easy preparation, wide source of raw materials and environmental friendliness, so it is used in the fields of photocatalytic degradation of pollutants, hydrogen production, carbon dioxide reduction and supercapacitors...

Claims

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Application Information

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IPC IPC(8): B01J27/24B01J35/10
CPCB01J27/24B01J35/39B01J35/613B01J35/633B01J35/635B01J35/647
Inventor 赵雷杜莹莹陈辉方伟何漩李薇馨曾祥会黄朝晖
Owner WUHAN UNIV OF SCI & TECH
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