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Rhotanium nano rod with good near-infrared light absorption performance and photoelectrocatalysis performance and preparing method of rhotanium nano rod

A gold-palladium alloy and near-infrared light technology, which is applied in nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science, can solve the problem of difficult preparation of gold-palladium composite nanoparticles with optical properties, which do not show surface plasmons Resonant absorption characteristics and other issues, to achieve the effect of excellent near-infrared light absorption and photocatalytic performance, uniform size, and easy operation

Active Publication Date: 2017-08-04
UNIV OF JINAN
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, although the gold-palladium composite nanoparticles constructed by the above method effectively improve the catalytic activity and stability of noble metal palladium, they do not show good surface plasmon resonance

Method used

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  • Rhotanium nano rod with good near-infrared light absorption performance and photoelectrocatalysis performance and preparing method of rhotanium nano rod
  • Rhotanium nano rod with good near-infrared light absorption performance and photoelectrocatalysis performance and preparing method of rhotanium nano rod
  • Rhotanium nano rod with good near-infrared light absorption performance and photoelectrocatalysis performance and preparing method of rhotanium nano rod

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Preparation of 7.5×26 nm Au-Pd Alloy Nanorods

[0033] Add 9.1 ml of deionized water, 0.1 ml of 0.1 mol / L chloroauric acid, 0.1 ml of 0.1 mol / L sodium tetrachloropalladate, and 0.02 ml of 0.1 mol / L silver nitrate solution to 10 ml of 0.2 mol / L silver nitrate solution under stirring. liter of cetyltrimethylammonium bromide solution, stir well to obtain a yellowish brown solution, then add 0.2 ml of 1 mol / liter aqueous solution of hydroquinone, wherein cetyltrimethylammonium bromide, chloride The concentrations of gold acid, sodium tetrachloropalladate, silver nitrate, and hydroquinone are respectively 0.1 mol / liter, 0.0005 mol / liter, 0.0005 mol / liter, 0.0001 mol / liter, 0.01 mol / liter; When the color of the solution changes from yellowish brown to a colorless and clear solution, add 0.4 milliliters of prefabricated gold nanoparticle seed colloidal solution, and then react it in a 50 degree Celsius oven for 1 hour to obtain a green gold-palladium alloy nanorod colloidal so...

Embodiment 2

[0035] Preparation of gold-palladium alloy nanorods in different concentrations of cetyltrimethylammonium bromide solutions

[0036] Prepare 4 cetyltrimethylammonium bromide solutions with different concentrations and mark them as A, B, C, and D respectively. Add 14.1, 11.6, 6.6, and 4.1 ml of deionized water to (A) under stirring conditions. 5. (B) 7.5, (C) 12.5, (D) 15 milliliters of 0.2 mol / liter hexadecyltrimethylammonium bromide solution, then add 0.1 milliliter of 0.1 mol / liter chloroauric acid, 0.1 milliliter of 0.1 Mole / liter sodium tetrachloropalladate, 0.02 milliliter 0.1 mole / liter silver nitrate aqueous solution, stir evenly to obtain a yellow-brown solution, then add 0.2 milliliter 1 mole / liter hydroquinone aqueous solution, wherein, hexadecyltrimethyl The concentration of ammonium bromide is respectively (A) 0.05 mol / liter, (B) 0.075 mol / liter, (C) 0.125 mol / liter, (D) 0.15 mol / liter; among A-D, chloroauric acid and sodium tetrachloropalladate The concentrations...

Embodiment 3

[0038] Preparation of gold-palladium alloy nanorods under different conditions of chloroauric acid concentration

[0039] Add 36.4 ml of deionized water, 0.4 ml of 0.1 mol / L sodium tetrachloropalladate, and 0.08 ml of 0.1 mol / L silver nitrate aqueous solution to 40 ml of 0.2 mol / L hexadecyl trimethyl bromide In the ammonium solution, a brown solution was obtained after stirring evenly, wherein the concentrations of cetyltrimethylammonium bromide, sodium tetrachloropalladate, and silver nitrate were 0.1 mol / L, 0.0005 mol / L, and 0.0001 mol / L, respectively ; Divide the above prepared solution into 4 parts, marked as A, B, C, D respectively; then add different amounts of 0.1 mol / L chloroauric acid aqueous solution, wherein, (A) 0.04 ml, (B) 0.06 ml , (C) 0.08 ml, (D) 0.1 ml; then add 0.2 ml of 1 mol / L hydroquinone aqueous solution to A-D respectively; Add 0.4 ml of prefabricated gold nanoparticle seed colloid solution to A-D respectively, and then react it in an oven at 50 degree...

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Abstract

The invention relates to a rhotanium nano rod and a preparing method of the rhotanium nano rod. The rhotanium nano rod and the preparing method of the rhotanium nano rod are characterized in that the obtained rhotanium nano rod has good near-infrared light absorption performance and photoelectrocatalysis performance. The method includes the steps that firstly, a sodium borohydride reduction method is used for preparing gold nanoparticle seeds in a cetyl trimethyl ammonium bromide water solution; secondly, chloroauric acid, disodium tetrachloropalladate, silver nitrate and a hydroquinone water solution are sequentially added into the cetyl trimethyl ammonium bromide water solution under the stirring condition, and a growth solution for preparing the rhotanium nano rod is obtained; and thirdly, a certain amount of a gold nanoparticle seed colloidal solution is added into the growth solution prepared in the second step, a reaction is carried out for 0.5 h to 3 h at the temperature ranging from 40 DEG C to 70 DEG C, and a green rhotanium nano rod colloid solution is obtained. The obtained rhotanium nano rod with the good near-infrared light absorption performance and photoelectrocatalysis performance has important application value in the aspects of photocatalysis, electrocatalysis, photoelectronic devices, information storage, near-infrared photothermal treatment and the like.

Description

technical field [0001] The invention relates to a gold-palladium alloy nanorod with excellent near-infrared light absorption and photoelectric catalytic performance and a preparation method thereof. Background technique [0002] Metal palladium has very good catalytic properties. As an important catalyst, it has important application value in the fields of industrial catalysis, fuel cells, drug synthesis, automobile exhaust purification, petroleum cracking, and water treatment. We know that metal-catalyzed reactions generally occur on the surface of particles. Obviously, reducing the size of catalyst particles can effectively enhance its catalytic activity. However, for catalysts, in addition to catalytic efficiency, another important performance is their stability. Pure palladium nanoparticles are prone to aggregation, dissolution, oxidation and other problems during use, which leads to the reduction or even inactivation of their catalytic performance. Compared with palla...

Claims

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Application Information

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IPC IPC(8): B22F1/00B22F9/24B82Y40/00B82Y30/00
CPCB82Y30/00B82Y40/00B22F9/24B22F1/054
Inventor 李村成李杰张涛姜春雪韩晓楠李伟刘广宁
Owner UNIV OF JINAN
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