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- W2897913003 abstract "Laser-assisted metallic nanoparticle synthesis is a versatile “green” method that has become a topic of active research. This chapter discusses the photochemical reaction mechanisms driving AuCl4− reduction using femtosecond-laser irradiation, and reviews recent advances in Au nanoparticle size-control. We begin by describing the physical processes underlying the interactions between laser pulses and the condensed media, including optical breakdown and supercontinuum emission. These processes produce a highly reactive plasma containing free electrons, which reduce AuCl4−, and radical species producing H2O2 that cause autocatalytic growth of Au nanoparticles. Then, we discuss the reduction kinetics of AuCl4−, which follow an autocatalytic rate law in which the first- and second-order rate constants depend on free electrons and H2O2 availability. Finally, we explain strategies to control the size of gold nanoparticles as they are synthesized; including modifications of laser parameters and solution compositions." @default.
- W2897913003 created "2018-10-26" @default.
- W2897913003 creator A5009975807 @default.
- W2897913003 creator A5067457437 @default.
- W2897913003 creator A5090982473 @default.
- W2897913003 date "2018-10-17" @default.
- W2897913003 modified "2023-10-04" @default.
- W2897913003 title "Au Nanoparticle Synthesis Via Femtosecond Laser-Induced Photochemical Reduction of [AuCl4]−" @default.
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- W2897913003 doi "https://doi.org/10.5772/intechopen.75075" @default.
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