Graphdiyne composite material for fuel preparation through photocatalytic CO2 reduction and preparation method thereof

A composite material and graphyne technology, applied in the field of photocatalytic CO2 reduction to fuel, can solve the problems of photocatalytic reduction efficiency and poor selectivity, and achieve the effects of enhancing photocatalytic efficiency, improving photocatalytic reduction efficiency, and promoting separation efficiency

Pending Publication Date: 2022-03-25
CHINA UNIV OF MINING & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Currently, photocatalytic CO 2 Reduction of fuel with CO 2 Problems of photocatalytic reduction efficiency and poor selectivity

Method used

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  • Graphdiyne composite material for fuel preparation through photocatalytic CO2 reduction and preparation method thereof
  • Graphdiyne composite material for fuel preparation through photocatalytic CO2 reduction and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] S01, take by weighing 1.0mmol of nickel chloride hexahydrate, 2.0mmol of indium trichloride, and 8.0mmol of thiourea, and add them to 70ml of N,N-dimethylformamide and ethylene glycol (volume ratio 1:1 ) in a mixed solvent, fully stirred and dissolved to form Niln 2 S 4 The precursor solution;

[0033] S02, weigh 0.2g graphdiyne, add to Niln 2 S 4 In the precursor solution, stir to make it fully dispersed;

[0034] S03, put the above solution into a high-pressure reactor, the reaction temperature is 200°C, the reaction time is 8h, after the reaction is completed, it is washed and dried to obtain Niln 2 S 4 / graphyne.

Embodiment 2

[0036] S01, take by weighing 1.0mmol of nickel chloride hexahydrate, 2.0mmol of indium trichloride, and 8.0mmol of thiourea, and add them to 70ml of N,N-dimethylformamide and ethylene glycol (volume ratio 1:1 ) in a mixed solvent, fully stirred and dissolved to form Niln 2 S 4 The precursor solution;

[0037] S02. Weigh 0.2g of nitrogen-doped graphyne and add to Niln 2 S 4 In the precursor solution, stir to make it fully dispersed;

[0038] S03, put the above solution into a high-pressure reactor, the reaction temperature is 200°C, the reaction time is 8h, after the reaction is completed, it is washed and dried to obtain Niln 2 S 4 / Nitrogen-doped graphyne.

Embodiment 3

[0040] S01, take by weighing 1.0mmol of nickel chloride hexahydrate, 2.0mmol of indium trichloride, and 8.0mmol of thiourea, and add them to 70ml of N,N-dimethylformamide and ethylene glycol (volume ratio 1:1 ) in a mixed solvent, fully stirred and dissolved to form Niln 2 S 4 The precursor solution;

[0041] S02. Weigh 0.2g of boron-doped graphyne and add to Niln 2 S 4 In the precursor solution, stir to make it fully dispersed;

[0042] S03, put the above solution into a high-pressure reactor, the reaction temperature is 200°C, the reaction time is 8h, after the reaction is completed, it is washed and dried to obtain Ni ln 2 S 4 / Boron-doped graphyne.

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Abstract

The invention discloses a graphdiyne composite material for fuel production through photocatalytic reduction of CO2, and belongs to the technical field of fuel production through photocatalytic reduction of CO2, the graphdiyne composite material is formed by compounding a NiIn2S4 precursor solution and graphdiyne, and the NiIn2S4 precursor solution comprises a solvent, a nickel salt, an indium salt and a sulfur source; the NiIn2S4 / graphdiyne composite material not only has the characteristics of excellent thermal stability, ultrahigh carrier mobility, high specific surface area, natural intrinsic band gap and the like of graphdiyne, but also integrates the high catalytic activity of NiIn2S4, and a heterojunction formed by the NiIn2S4 and the graphdiyne widens the visible light absorption range, promotes the separation efficiency of photo-induced electrons / holes and improves the photocatalytic activity of the graphdiyne. The photocatalytic efficiency is enhanced, and the CO2 photocatalytic reduction efficiency is improved.

Description

technical field [0001] The invention belongs to photocatalytic CO 2 Reduction fuel technical field, especially a kind of photocatalytic CO 2 A graphyne composite material for reducing fuel and a preparation method thereof. Background technique [0002] Using sunlight to catalyze CO 2 The reduction of chemicals is considered to be a brand-new carbon capture and utilization technology, which can solve the energy crisis and the greenhouse effect caused by the consumption of fossil fuels to a certain extent. So far, experts and scholars have explored various semiconductor materials, including metal oxides, sulfides, oxyhalides, oxynitrides, organometallic framework materials, etc., for photocatalytic degradation. Among all the reported photocatalysts, metal sulfides are considered as good candidates for photocatalysis due to their strong absorption in the visible region. As an important ternary transition metal sulfide, sulfur spinel (AIIBIII 2 SVI 4 , such as Znln 2 S 4...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/043B01J35/02B01D53/86B01D53/62
CPCB01J27/043B01J35/004B01J35/02B01D53/8671B01D2257/504B01D2259/802Y02A50/20
Inventor 梁华根陈浮郝绍金马静王安虎朱晨曦徐杨陈嘉庚盖泽嘉李沫汐
Owner CHINA UNIV OF MINING & TECH
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