Method for preparing gold nano particle modification zinc oxide

A technology of gold nanoparticles and zinc oxide, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, chemical/physical processes, etc., can solve the problem of uneven dispersion of precious metal particles, complex preparation process, particle The problem of different particle sizes

Inactive Publication Date: 2010-03-17
SHANGHAI INST OF MEASUREMENT & TESTING TECH
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  • Abstract
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Problems solved by technology

At present, the preparation method of the prior art has a complex preparation process, which requires calcination, and the dispersion of precious metal particles is uneven, and the dispersion range is 10nm to 20μm, and the particle size is different (the particle size is mostly in the micron range, and in the nanometer range. The proportion of the level range is low) and other shortcomings

Method used

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  • Method for preparing gold nano particle modification zinc oxide

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Effect test

Embodiment 1

[0014] Embodiment 1: First, the zinc salt solution and the hexamethylenetetramine solution are uniformly stirred, and the ratio of the zinc salt solution and the hexamethylenetetramine solution substance amount is 1:4, and the concentration is 0.05mol / L×0.2 L of zinc nitrate or zinc acetate solution and hexamethylenetetramine solution with a concentration of 0.1mol / L×0.4L are evenly stirred to form mixed solution A, and then the gold salt solution and mixed solution A are evenly stirred, and the gold salt The ratio of the amount of the solution to the zinc salt solution is 1:1000, that is, the gold chloride solution with a concentration of 0.00005mol / L×0.2L is added to the mixed solution A and stirred evenly to make it a mixed solution B, and then the mixed solution B Move to the reaction kettle that reaction temperature is 80~180 ℃ and react 2~24 hours, can choose reaction temperature to be 105~120 ℃, and reaction time is 4~12 hours, preferably reaction temperature is 120 ℃, a...

Embodiment 2

[0015] Embodiment 2: First, the zinc salt solution and the hexamethylenetetramine solution are evenly stirred, and the ratio of the zinc salt solution and the hexamethylenetetramine solution substance amount is 1: 2, and the concentration is 0.05mol / L×0.2 L of zinc nitrate or zinc acetate solution and hexamethylenetetramine solution with a concentration of 0.05mol / L×0.4L are evenly stirred to form mixed solution A, and then the gold salt solution and mixed solution A are evenly stirred, and the gold salt The ratio of the amount of the solution to the zinc salt solution is 1:500, that is, the gold chloride solution with a concentration of 0.0001mol / L×0.2L is added to the mixed solution A and stirred evenly to make it a mixed solution B, and then the mixed solution B Move to the reaction kettle that reaction temperature is 80~180 ℃ and react 2~24 hours, can choose reaction temperature to be 105~120 ℃, and reaction time is 4~12 hours, preferably reaction temperature is 120 ℃, and ...

Embodiment 3

[0016] Embodiment 3: first the zinc salt solution and the hexamethylenetetramine solution are uniformly stirred, the ratio of the amount of the zinc salt solution and the hexamethylenetetramine solution is 1:1, and the concentration is 0.05mol / L×0.2 L of zinc nitrate or zinc acetate solution and hexamethylenetetramine solution with a concentration of 0.025mol / L×0.4L are evenly stirred to form mixed solution A, and then the gold salt solution and mixed solution A are evenly stirred, and the gold salt The ratio of the amount of the solution to the zinc salt solution is 1:100, that is, the gold chloride solution with a concentration of 0.0005mol / L×0.2L is added to the mixed solution A and stirred evenly to make it a mixed solution B, and then the mixed solution B Move to the reaction kettle that reaction temperature is 80~180 ℃ and react 2~24 hours, can choose reaction temperature to be 105~120 ℃, and reaction time is 4~12 hours, preferably reaction temperature is 120 ℃, and react...

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Abstract

The invention relates to a method for preparing gold nano particle modification zinc oxide for processing sewage in environmental protection. The method comprises the following steps: (a) stirring a zinc salt solution and a sextic methyl tetramine solution evenly, wherein the proportion of the quantity of the zinc salt solution and the sextic methyl tetramine solution substance is 1:1-4; (b) adding a gold salt solution into mixed liquid A of the zinc salt solution and the sextic methyl tetramine solution and stirring evenly, wherein the proportion of the quantity of the gold salt solution andthe zinc salt solution substance is 1:100-1000; (c) transferring mixed liquid B of the zinc salt solution, the sextic methyl tetramine solution and the gold salt solution into a reaction kettle with the reaction temperature of 80-180 DEG C and reacting for 2-24 hours; and (d) after cooling to the normal temperature naturally, separating the mixed liquid B after reacting, washing and drying. The invention has simple preparation method, and adopts no strong acid, strong alkali and organic solvents; and compared with other preparation methods, the invention has the advantages of no environmentalpollution, no calcination and the like.

Description

technical field [0001] The invention belongs to the technical field of preparation of inorganic chemical materials, and in particular relates to a preparation method of gold nanoparticle-modified zinc oxide (ZnO), which is mainly used for treating sewage in environmental protection. Background technique [0002] At present, countries around the world, while enjoying rapid economic growth, are also facing the largest, most extensive and most serious environmental pollution problem in world history. Attaching great importance to the treatment and recycling of sewage discharge, waste and other pollution, reducing resource consumption and environmental pollution, and taking the road of sustainable development has become a common problem in the development process of all countries in the world. China faces particularly severe challenges in this regard. The photocatalytic technology developed in recent years using semiconductor metal oxides as catalysts provides us with an ideal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/66B01J35/02C02F1/30
CPCY02W10/37
Inventor 徐建吴立敏辛立辉朱丽娜陈永康何慈晖
Owner SHANGHAI INST OF MEASUREMENT & TESTING TECH
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