Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method and application of CuO nano particle doped Cu-MOF/carbon point composite catalyst

A composite catalyst and nanoparticle technology, applied in the field of catalyst technology and nanocomposite materials, can solve problems such as high cost and resource limitation, and achieve the effects of low cost, high speed and easy industrialization

Inactive Publication Date: 2019-04-16
UNIV OF JINAN
View PDF3 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although it has been proved that NH 3 Feasibility of electrochemical synthesis of , but their high cost and limited resources limit their large-scale application, therefore, the development of cheap room temperature N 2 reduced to NH 3 Catalysts are important

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1 A preparation method of CuO nanoparticles doped Cu-MOF / carbon dot composite catalyst

[0033] (1) Preparation of raw material mixture

[0034] 0.10 g H 6 L ligand was dissolved in 8 mL N,N-dimethylacetamide DMA, 5 mL dimethyl sulfoxide DMSO, 0.3 mL H 2 In the mixed solvent composed of O, add 3.5 mL of HBF with a mass fraction of 40% 4 solution, a clear ligand solution was obtained; continue to add 0.64 g of Cu (NO3 ) 2 ·3H 2 O and the glucose blend of 0.2 g, obtain raw material mixed solution;

[0035] (2) Preparation of CuO nanoparticles doped Cu-MOF / carbon dot composite catalyst

[0036] The raw material mixture was heated at 90 ºC for 2 days to prepare glucose-doped polynitrogen Cu-MOF crystals; after washing the Cu-MOF crystals with water, they were oxidized-pyrolyzed in a tube furnace at 300 ℃ for 2 h to obtain CuO Nanoparticle-doped Cu-MOF / carbon dot composite catalyst.

Embodiment 2

[0037] Example 2 A preparation method of CuO nanoparticles doped Cu-MOF / carbon dot composite catalyst

[0038] (1) Preparation of raw material mixture

[0039] 0.12 g H 6 L ligand was dissolved in 10 mL N,N-dimethylacetamide DMA, 8.5 mL dimethyl sulfoxide DMSO, 0.4 mL H 2 In the mixed solvent composed of O, add 3.7 mL of HBF with a mass fraction of 40% 4 solution, a clear ligand solution was obtained; continue to add 0.68 g of Cu (NO 3 ) 2 ·3H 2 O and the glucose blend of 0.25 g, obtain raw material mixed solution;

[0040] (2) Preparation of CuO nanoparticles doped Cu-MOF / carbon dot composite catalyst

[0041] The raw material mixture was heated at 90 ºC for 2 days to prepare glucose-doped polynitrogen Cu-MOF crystals; after washing the Cu-MOF crystals with water, they were oxidized-pyrolyzed in a tube furnace at 300 ℃ for 2 h to obtain CuO Nanoparticle-doped Cu-MOF / carbon dot composite catalyst.

Embodiment 3

[0042] Example 3 A preparation method of CuO nanoparticles doped Cu-MOF / carbon dot composite catalyst

[0043] (1) Preparation of raw material mixture

[0044] 0.14 g H 6 L ligand was dissolved in 12 mL N,N-dimethylacetamide DMA, 12 mL dimethyl sulfoxide DMSO, 0.5 mL H 2 In the mixed solvent composed of O, add 4.0 mL of HBF with a mass fraction of 40% 4 solution, a clear ligand solution was obtained; continue to add 0.70 g of Cu (NO 3 ) 2 ·3H 2 O and the glucose blend of 0.30 g, obtain raw material mixed solution;

[0045] (2) Preparation of CuO nanoparticles doped Cu-MOF / carbon dot composite catalyst

[0046] The raw material mixture was heated at 90 ºC for 2 days to prepare glucose-doped polynitrogen Cu-MOF crystals; after washing the Cu-MOF crystals with water, they were oxidized-pyrolyzed in a tube furnace at 300 ℃ for 2 h to obtain CuO Nanoparticle-doped Cu-MOF / carbon dot composite catalyst.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a preparation method of a CuO nanoparticle-doped Cu-MOF / carbon dot composite catalyst and application thereof in electrocatalysis room-temperature nitrogen reduction based on the catalyst, which belongs to the technical field of catalysis technology and nano composite materials. The method mainly comprises the following steps of: blending a ligand H6L solution, Cu (NO3)2 3H2O and glucose to prepare a raw material mixed solution; heating the raw material mixed solution at 90 DEG C for 2 days to prepare a glucose-doped multi-nitrogen Cu-MOF crystal; oxidizing the glucose-doped Cu-MOF crystal and through pyrolysis at 300 DEG C for 2h in the air atmosphere of a tube furnace to prepare the CuO nanoparticles-doped Cu-MOF / carbon point composite catalyst. The raw materialsused for preparing the catalyst are low in cost, the process is simple, and the catalyst is used for electrocatalysis of nitrogen to reduce the nitrogen to ammonia at room temperature, which has goodcatalytic performance and industrial prospect.

Description

technical field [0001] The invention discloses a preparation method of a Cu-MOF / carbon dot composite catalyst doped with CuO nanoparticles and the application of the catalyst to electrocatalyze the reduction of nitrogen at room temperature into ammonia, belonging to the technical fields of catalyst technology and nanocomposite materials. Background technique [0002] NH 3 It is one of the most important chemicals at present, and its annual output ranks first among all kinds of chemicals, and our country is the first to synthesize NH 3 As a large industrial country, as a high-energy-consuming industry, the synthesis of NH 3 Industry consumes 1-2% of the global energy, NH 3 Its downstream products are mainly agricultural chemical fertilizers, and others such as synthetic fibers, explosives, and industrial fuels are also important downstream products. modern synthetic NH 3 The industrialization of technology began in 1905. The German chemist Haber proved through a large num...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B01J31/28B01J35/10C25B1/00C25B11/06
CPCC25B1/00B01J31/28C25B11/091B01J35/33B01J35/60
Inventor 侯莹匡轩
Owner UNIV OF JINAN