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Preparation method of gold mercury amalgam nano particle with high catalytic activity and application thereof

A gold nanoparticle, high catalytic activity technology, applied in electrical components, battery electrodes, circuits, etc., can solve the problems of uncontrollable gold amalgam nanoparticle size, inability to meet application requirements, and unsuitable for large-scale production. The effect of remarkable catalytic ability, uniform size and excellent catalytic activity

Inactive Publication Date: 2016-05-04
CENT SOUTH UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Existing literature (ChemPhysChem2004,5,1405-1410) reports the synthesis gold amalgam by the method for electrodeposition, in metal cation (Cr Ⅲ 、Co Ⅱ 、Cd Ⅱ 、Cu Ⅱ ) has high sensitivity in detection, but the method disclosed in this document is uncontrollable to the particle size of gold amalgam nanoparticles, and cannot meet the requirements of various applications.
Palladium-gold alloy nanochains supported by reduced graphene (RSCAdv., 2014, 4, 52640–52646) show good catalytic activity for oxygen reduction, but are expensive and not suitable for large-scale production

Method used

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  • Preparation method of gold mercury amalgam nano particle with high catalytic activity and application thereof
  • Preparation method of gold mercury amalgam nano particle with high catalytic activity and application thereof
  • Preparation method of gold mercury amalgam nano particle with high catalytic activity and application thereof

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Embodiment 1

[0030] (1) The preparation method of AuNPs, the steps are as follows:

[0031] Add 360μL 25mmol / LHAuCl to a 50mL three-neck flask 4 And 28mL of ultrapure water, after stirring (1500rpm), condensing and refluxing, after heating to boiling, add 200μL of 170mmol / LNa 3 C 6 h 5 o 7 After a few seconds, the color of the solution turned ruby ​​red and stabilized. Stop heating, continue to stir for 30 minutes, add ultrapure water to make the total volume of the solution 30mL, and the obtained nano-gold is S. Under stirring, add 5 mL of S to 90 mL of boiling ultrapure water, add 540 μL of 25 mmol / L HAuCl 4 , immediately add 900μL 170mmol / LNa 3 C 6 h 5 o 7 , stop heating and continue to stir for 60min, add water to make the total volume 100mL, and obtain nano-gold as A1. Under stirring, add 20 mL of A1 to 75 mL of boiling ultrapure water, add 480 μL of 25 mmol / L HAuCl 4 , immediately add 800μL 170mmol / LNa 3 C 6 h 5 o 7 , stop heating and continue to stir for 60min, add wat...

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Abstract

The invention discloses a preparation method of a gold mercury amalgam nano particle with a high catalytic activity and an application thereof. The preparation of the gold mercury amalgam nano particle comprises the following steps: taking sodium citrate as a reducing agent, and synthesizing a gold nano particle by reducing chloroauric acid step by step; physically loading the gold nano particle to a surface of a glassy carbon electrode surface, then taking the glassy carbon electrode as a working electrode, placing the glassy carbon electrode into a mercury nitrate solution, obtaining a glassy carbon electrode of the surface modified gold mercury amalgam nano particle through a cyclic voltammetry, and performing an ultrasonic treatment, then the gold mercury amalgam nano particle can be obtained. The preparation method is simple, low in cost and simple and convenient in operation; the prepared gold mercury amalgam nano particle shows an obvious electrocatalytic activity for oxygen reduction, and has a better stability and a potential application value in fuel cells, environmental catalysis and other aspects.

Description

technical field [0001] The invention relates to a preparation method and application of gold amalgam nanoparticles with high catalytic activity, belonging to the field of nanometer electrocatalytic materials. Background technique [0002] Nanomaterials, especially noble metal nanomaterials such as gold and platinum, have a very important position in the field of catalysts because of their surface effects, quantum size effects, and small size effects that are different from ordinary materials (Phys.Chem.Chem Phys., 2007, 9, 2654–2675; Phys.Chem.Chem.Phys., 2014, 16, 13583), showing great potential application value in energy and chemical industry. [0003] Gold nanoparticles have been widely studied in various catalytic reactions (JSolid State Electrochem, 2014, 18, 3299–3306). Nanomaterials with controllable size and composition can greatly improve the performance of nanoparticles and broaden their application fields. Existing literature (ChemPhysChem2004,5,1405-1410) repor...

Claims

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Application Information

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IPC IPC(8): H01M4/88H01M4/90
CPCH01M4/88H01M4/9041Y02E60/50
Inventor 向娟秦云
Owner CENT SOUTH UNIV
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