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Preparation of fibrous catalyst loaded with metal nanoparticles and application

A metal nanoparticle and nanoparticle technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve problems such as limited application range, achieve easy infiltration and penetration, mild conditions, reduce The effect of applying cost

Active Publication Date: 2018-06-29
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, polydopamine is easily degraded under strong acidic or alkaline conditions, which limits its use

Method used

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  • Preparation of fibrous catalyst loaded with metal nanoparticles and application
  • Preparation of fibrous catalyst loaded with metal nanoparticles and application
  • Preparation of fibrous catalyst loaded with metal nanoparticles and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Synthesis of aluminum silicate fiber@nitrogen-doped graphite / iron-palladium alloy nanoparticle composite:

[0032] 1) Aluminum silicate fibers@polydopamine / iron-palladium nanoparticles (that is, aluminum silicate fibers wrapped by mixture polydopamine / iron-palladium nanoparticles, the mixture polydopamine / iron-palladium nanoparticles are simultaneously loaded with iron Synthesis of polydopamine mixture of nanoparticles and palladium nanoparticles) composite material: Dissolve tris in water to prepare 100 mL of 10 mM tris aqueous solution; then, at 20 ° C, 300 mg of aluminum silicate fiber Add to the above tris aqueous solution; then, add 300 mg of dopamine hydrochloride, then add ferric chloride to make the concentration 20 mM, add potassium chloropalladate to make the concentration 20 mM, and finally, stir and react for 48 hours , in this process, dopamine hydrochloride is polymerized and wrapped on aluminum silicate fibers, and iron-palladium nanoparticles are loaded,...

Embodiment 2

[0039] Synthesis of aluminum silicate fibers@nitrogen-doped graphite / cobalt nanoparticles composites:

[0040] 1) Synthesis of aluminum silicate fiber@polydopamine / cobalt nanoparticles (that is, aluminum silicate fiber wrapped by polydopamine / cobalt nanoparticles) composite material: 20mM trimethylolaminomethane was dissolved in water to prepare 20mM trimethylol 100 mL of an aqueous trisaminomethane solution; then, at 25° C., 300 mg of aluminum silicate fiber was added to the above aqueous trishydroxymethylaminomethane solution; then, 250 mg of dopamine hydrochloride was added, and cobalt nitrate was added to make the concentration 20 mM. Finally, the reaction was stirred for 30 hours, during which dopamine hydrochloride was polymerized and wrapped on the aluminum silicate fibers, and loaded with cobalt nanoparticles to obtain aluminum silicate fibers@polydopamine / cobalt nanoparticles composite material;

[0041] 2) Preparation of aluminum silicate fiber@nitrogen-doped graphit...

Embodiment 3

[0043] Synthesis of aluminum silicate fibers@nitrogen-doped carbon / copper nanoparticles composites:

[0044] 1) Synthesis of aluminum silicate fiber@polydopamine / copper nanoparticles (that is, aluminum silicate fiber wrapped by polydopamine / copper nanoparticles) composite material: dissolving trishydroxymethylaminomethane in water to prepare 20mM trimethylol 100 mL of an aqueous trisaminomethane solution; then, at 20° C., 400 mg of aluminum silicate fiber was added to the aqueous solution of trishydroxymethylaminomethane; then, 250 mg of dopamine hydrochloride was added, and copper sulfate was added to make the concentration 15 mM. Finally, the reaction was stirred for 24 hours, during which dopamine hydrochloride was polymerized and wrapped on the aluminum silicate fiber, and copper nanoparticles were loaded to obtain the aluminum silicate fiber@polydopamine / copper nanoparticle composite material;

[0045] 2) Preparation of aluminum silicate fiber@nitrogen-doped carbon / copper...

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PUM

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Abstract

The invention discloses preparation of a fibrous catalyst loaded with metal nanoparticles and application. The preparation method comprises the following steps: adding metal salt into a solution system containing trihydroxy methyl aminomethane, fiber and dopamine hydrochloride to obtain mixed solution, then stirring, polymerizing dopamine to obtain polydopamine, wrapping fiber with the polydopamine, and simultaneously loading the metal nanoparticles; then, carrying out heat annealing treatment under the atmosphere of inertial gas to prepare a fiber@nitrogen-doped carbon metal compound material, namely the fibrous catalyst loaded with metal nanoparticles. The preparation and the application disclosed by the invention have the beneficial effects that by setting of a whole process flow of thepreparation method and improvement on reaction conditions and parameters of all key process steps, the activity and the cycling stability of the loaded nano-metal catalyst can be effectively improved.

Description

technical field [0001] The invention belongs to the field of catalysts, and more specifically, relates to a preparation method and application of a fibrous catalyst loaded with metal nanoparticles. The fibrous catalyst loaded with metal nanoparticles can be, for example, loaded with a single metal elemental nanoparticle (such as a single noble metal elemental Nanoparticles), it can also be a fibrous catalyst supporting two or more metal alloy nanoparticles (such as non-noble metal-noble metal alloy nanoparticles, etc., wherein the non-noble metal elements can be selected from iron, cobalt, nickel, copper, and zinc at least one of ). Background technique [0002] Supported heterogeneous catalysts have been widely used in catalytic fields such as energy storage and conversion, environmental protection and treatment, and synthesis reactions of organic compounds, and play an important role in these industrial processes. With the rapid development of modern industry, the prepara...

Claims

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Application Information

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IPC IPC(8): B01J27/24
CPCB01J27/24B01J35/393B01J35/58
Inventor 王帅奚江波
Owner HUAZHONG UNIV OF SCI & TECH
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