An undergraduate level experiment on the synthesis of Au nanoparticles and their size-dependent optical and catalytic properties
AUTOR(ES)
Silva, Anderson G. M. da, Rodrigues, Thenner S., Macedo, Alexandra, Silva, Rafael T. P. da, Camargo, Pedro H. C.
FONTE
Quím. Nova
DATA DE PUBLICAÇÃO
2014
RESUMO
The synthesis of gold nanoparticles (Au NPs) 15, 26, and 34 nm in diameter, followed by the investigation of their size-dependent optical and catalytic properties, is described herein as an undergraduate level experiment. The proposed experiment covers concepts on the synthesis, stabilization, and characterization of Au NPs, their size-dependent optical and catalytic properties at the nanoscale, chemical kinetics, and the role of a catalyst. The experiment should be performed by groups of two or three students in three lab sessions of 3 h each and organized as follows: i) synthesis of Au NPs of different sizes and investigation of their optical properties; ii) evaluation of their catalytic activity; and iii) data analysis and discussion. We believe that this activity enables students to integrate these multidisciplinary concepts in a single experiment as well as to become introduced/familiarized with an active research field and current literature in the areas of nanoparticle synthesis and catalysis.
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