Facile synthesis of hollow urchin-like gold nanoparticles and their catalytic activity

The galvanic replacement reaction between Ag nanoparticles (NPs) and HAuCl 4 followed by addition of ascorbic acid led to the formation of AuNPs sharing both urchin-like and hollow structures. The AgNPs took as sacrificial templates to guide the hollow structure and the intermediates provided rough...

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Bibliographic Details
Published inGold Bulletin Vol. 45; no. 2; pp. 91 - 98
Main Authors Wang, Wei, Pang, Yujia, Yan, Jian, Wang, Guibao, Suo, Hui, Zhao, Chun, Xing, Shuangxi
Format Journal Article
LanguageEnglish
Published Berlin/Heidelberg Springer-Verlag 01.07.2012
World Gold Council
Subjects
Ascorbic acid
Atomic properties
Catalysis
Catalytic activity
Chemical properties
Chemical synthesis
Chemistry and Materials Science
Deposition
Gold
Materials Science
Metallic Materials
Nanoparticles
Optical properties
Original Paper
Surface chemistry
Synthesis
China
Hollow structure
Urchin-like structure
Catalytic activity
Gold nanoparticles
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Summary:The galvanic replacement reaction between Ag nanoparticles (NPs) and HAuCl 4 followed by addition of ascorbic acid led to the formation of AuNPs sharing both urchin-like and hollow structures. The AgNPs took as sacrificial templates to guide the hollow structure and the intermediates provided rough surface and active sites for the further deposition of AuNPs, which originated from the reduction of excess HAuCl 4 by ascorbic acid. These unique structured AuNPs presented excellent optical properties and great advantages in catalysis applications.
Bibliography:ObjectType-Article-1
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ISSN:2190-7579
1027-8591
0017-1557
2190-7579
DOI:10.1007/s13404-012-0052-y