Preparation and application of palladium/copper oxide nano porous structure composite material loaded with titanium dioxide nanoparticles

A nanoparticle and nanoporous technology is applied in the field of preparation of oxide composite materials to achieve the effects of simple and easy operation, low implementation cost and easy control of operation process.

Inactive Publication Date: 2017-05-10
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the biggest obstacle to its commercial application is the activity and cost of the anode catalyst.

Method used

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  • Preparation and application of palladium/copper oxide nano porous structure composite material loaded with titanium dioxide nanoparticles
  • Preparation and application of palladium/copper oxide nano porous structure composite material loaded with titanium dioxide nanoparticles
  • Preparation and application of palladium/copper oxide nano porous structure composite material loaded with titanium dioxide nanoparticles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1, the preparation of a palladium / copper oxide nanoporous structure composite material loaded with titanium dioxide nanoparticles, mainly uses simple deposition method to load TiO on the Pd / CuO nanoporous structure 2 Nanoparticles to obtain uniform distribution of TiO on the surface and inside 2 Composite nanoporous structure of particles. Proceed as follows:

[0021] Step 1. Prepare Ti-Cu-Pd amorphous alloy strips according to the following components and atomic percentages: the content of Ti is 30%, the content of Cu is 60%, and the content of Pd is 10%. Put the strips into 5M Hydrochloric acid solution, at a temperature of 90 ° C, hydrothermal reaction was carried out in a reactor for 5 hours. After the reaction was completed, the Pd / CuO nanoporous structure to be composited was obtained by washing in deionized water and absolute ethanol respectively.

[0022] Step 2: Add 3mL of oleic acid, 0.1mL of tetrabutyl titanate and 3mL of oleylamine into a beaker...

Embodiment 2

[0024] Embodiment 2: Preparation of a palladium / copper oxide nanoporous structure composite material loaded with titanium dioxide nanoparticles, the steps are basically the same as in Example 1, the only difference being that the titanium dioxide nanoparticles added in step 3 were changed from 80 μL to 160 μL, The final loaded TiO 2 The morphology of the Pd / CuO nanoporous structure of nanoparticles is shown in Figure 1(b), and Figure 2(a) and Figure 2(b) are TEM images of the structure obtained in Example 2.

Embodiment 3

[0025] Embodiment 3: Preparation of a palladium / copper oxide nanoporous structure composite material loaded with titanium dioxide nanoparticles. The steps are basically the same as in Example 1, except that the titanium dioxide nanoparticles added in step 3 are changed from 80 μL to 240 μL. The final loaded TiO 2 The morphology of the Pd / CuO nanoporous structure of nanoparticles is shown in Fig. 1(c).

[0026] It can be concluded from the above examples that when prepared according to the process shown in the claims, the Pd / CuO nanoporous surface and TiO uniformly distributed inside can be obtained 2 Particle-based composite nanoporous materials.

[0027] Figure 1(a), Figure 1(b) and Figure 1(c) show that when there is a small amount of TiO 2 The sample still maintains its basic bicontinuous structure when the loading of nanoparticles is large. With TiO 2 Increased loading of nanoparticles, more nanosized TiO 2 The particles were loaded onto the surface and pore walls of ...

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Abstract

The invention discloses a preparation method of a palladium / copper oxide nano porous structure composite material loaded with titanium dioxide nanoparticles. The preparation method comprises the following steps: preparing a Ti-Cu-Pd amorphous ribbon into a Pd / CuO nano porous structure to be compounded by utilizing a chemical dealloying manner; adding a certain amount of oleic acid, tetrabutyl titanate and oleylamine into cyclohexane in sequence, and stirring continuously; then transferring a mixture into a reaction kettle and carrying out a hydrothermal reaction to obtain the titanium dioxide nanoparticles; adding the Pd / CuO nano porous structure into a normal hexane solution and carrying out ultrasonic treatment to obtain a black suspension solution; adding different amounts of the titanium dioxide nanoparticles into the black suspension solution; and magnetically stirring, washing and drying to obtain the palladium / copper oxide nano porous structure composite material loaded with the titanium dioxide nanoparticles. The preparation method is simple in preparation process, low in implementation cost and low in cost and is an efficient and economical synthesis method. The oxide composite material obtained by the method has the advantages of improvement of an anti-poisoning capability of the material and high catalytic activity.

Description

technical field [0001] The invention relates to a method for preparing a novel nanometer material, in particular to a method for preparing an oxide composite material with a nanoporous structure mainly used in the field of fuel cells. Background technique [0002] Porous materials are a class of functional structural materials with obvious pore characteristics, which are composed of continuous solid phase forming the basic framework of porous materials and pores surrounded by continuous solid phase scaffolds. Nanoporous metal composite is a special kind of porous material. The nanoscale pore size makes it have higher specific surface area and other unique physical, chemical and mechanical properties, such as unique electromagnetic properties, higher chemical activity, more high strength etc. Therefore, nanoporous metal composites have great application potential, first of all in catalysis and separation science, such as high specific surface area catalyst supports in fuel c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/86H01M4/88H01M4/90H01M4/92
CPCH01M4/8647H01M4/8803H01M4/8825H01M4/9016H01M4/9041H01M4/92H01M4/923Y02E60/50
Inventor 朱胜利曹硕徐文策崔振铎杨贤金
Owner TIANJIN UNIV
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