Preparation method of nano-gold particle
Patent Information
- Authority / Receiving Office
- CN · China
- Current Assignee / Owner
- WUHAN UNIV
- Publication Date
- 2004-07-21
- Estimated Expiration
- Not applicable · inactive patent
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Abstract
Description
technical field
[0001] The invention relates to a preparation method of gold nanoparticles. Background technique
[0002] Gold nanoparticles have important applications in many fields such as catalysis, electronic and optical devices, and biotechnology. Taking the field of catalysis as an example, gold does not have high activity as a catalyst, but when the size of gold particles is less than 10nm, its catalytic activity is surprisingly improved, showing extremely high catalytic performance for many oxidation and reduction reactions. For example, α-Fe 2 o 3 or TiO 2 Oxidation of CO to CO by supported nano-gold catalysts 2 This important reaction has extremely high catalytic activity and can completely oxidize CO at -70 °C.
[0003] Although there have been many reports on the preparation methods of gold nanoparticles, these methods generally require the use of a large amount of polymers or special chemical reagents (such as long-chain thiols or long-chain amines) as pro...