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A kind of preparation method of paper-based palladium-zinc oxide-gold composite material

A composite material and zinc oxide technology, which is applied in metal material coating process, electrolytic inorganic material coating, liquid chemical plating, etc., can solve the problem that rods and rods cannot carry out electron transfer, etc., and achieve low cost, large surface area, high The effect on production value

Active Publication Date: 2021-06-04
UNIV OF JINAN
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  • Description
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AI Technical Summary

Problems solved by technology

The unique rod-like structure of ZnO nanorods can accelerate the transfer of electrons along the nanorods and enhance their conductivity, but the electron transfer between rods cannot be carried out. In order to better enhance its conductivity and further improve application performance, it is necessary to Functional conductive material between rods

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] A kind of preparation method of paper base palladium-zinc oxide-gold composite material, concrete preparation scheme is as follows:

[0016] (1) First use the computer software Adobe illustrator CS6 to design the shape and functional area of ​​the paper chip and the corresponding hydrophobic wax printing pattern, then print the hydrophobic wax printing pattern on the chromatographic paper with a wax printer, and heat it at 130 °C for 50 s , so that the wax melts and penetrates into the paper fibers completely. The designed paper chip shape is a square with a side length of 25 mm. The hydrophobic area of ​​the wax, and finally use screen printing technology to print a rectangular carbon wire with a length of 13 mm and a width of 5 mm on the hydrophilic area and hydrophobic area of ​​the paper chip;

[0017] (2) In the hydrophilic area of ​​the paper chip, a palladium nanoparticle layer was grown by the in situ reduction method, and 40 μL of chloropalladium acid solution ...

Embodiment 2

[0021] The preparation steps are the same as in Example 1, the difference is that in step (2), the palladium nanoparticle layer is grown on the hydrophilic region of the paper chip by the in-situ reduction method, the concentration of the chloropalladium acid solution used is 80 mM, and the concentration of the ascorbic acid solution is 200 mM. mM.

Embodiment 3

[0023] The preparation steps are the same as in Example 1, the difference is that in step (3), zinc oxide nanorods are electrodeposited on the surface of the paper-based palladium electrode by electrodeposition, and the electrodeposition solution used consists of potassium chloride with a concentration of 2.0 M and a concentration of 0.03 M zinc nitrate composition.

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Abstract

The invention discloses a preparation method of a paper-based palladium-zinc oxide-gold composite material. First, a layer of palladium nanoparticles is coated on the surface of paper fibers by an in-situ reduction method to obtain a paper-based palladium electrode; ZnO nanorods were grown on paper-based palladium electrodes; finally, gold nanowires were grown between ZnO nanorods based on photo-assisted electrodeposition to obtain paper-based palladium-zinc oxide-gold composite materials. The gold nanowires between the zinc oxide nanorods can accelerate the electron transfer between the rods, and at the same time, the electrons are transferred along the nanorods to the palladium nanoparticles on the surface of the paper fiber network, forming a three-dimensional conductive network; the paper-based composite material not only It has good electrical conductivity and large surface area, and can be widely used in the fields of electrochemistry, photoelectrochemistry and electrochemiluminescence sensing and analysis.

Description

technical field [0001] The invention relates to the technical fields of composite nanomaterial preparation technology and paper chip technology, and more specifically relates to a preparation method of paper-based palladium-zinc oxide-gold composite material. Background technique [0002] Paper is ubiquitous in daily life, and it has the advantages of low cost, good biocompatibility, portability, and abundant sources. The criss-cross fiber network of paper itself makes it have a large surface area, which is conducive to functionalizing a large number of nanomaterials and obtaining high-performance paper-based composite materials. Due to the poor electrical conductivity of paper fibers, functionalized noble metals, carbon materials, etc. are usually required to enhance their electrical conductivity. [0003] As a semiconductor material with excellent performance, zinc oxide is widely used in the fields of sensing and analysis such as electrochemistry, photoelectrochemistry, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C18/44C25D9/04C25D3/48C25D5/54B82Y40/00
CPCB82Y40/00C23C18/1658C23C18/44C25D3/48C25D5/54C25D9/04
Inventor 于京华杨红梅李正林张彦颜梅葛慎光
Owner UNIV OF JINAN
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