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Growth process of Ag triangular nanoplates observed by in situ XAFS

H Murayama, N Hashimoto and H Tanaka

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We examined to establish the simple synthesis method of Ag triangular nanoplates in order to elucidate their growth process. Ethanol solution of AgNO3 was photoirradiated without reduction agents except in the presence of PVP, poly(vinil-pyrrolidone). Electron microscope observations revealed that the shape of the product was Ag triangular nanoplates with sharp corners and a flat face. In situ XAFS and optical absorption measurements suggested that the Ag triangular nanoplates were photoinduced-converted from Ag spherical nanoparticles via Ag truncated triangular nanoplates.


PACS

81.16.-c Methods of nanofabrication and processing

78.70.Dm X-ray absorption spectra

78.67.Bf Nanocrystals and nanoparticles

61.80.Ba Ultraviolet, visible, and infrared radiation effects (including laser radiation)

81.07.Bc Nanocrystalline materials

78.40.Kc Metals, semimetals, and alloys

Subjects

Condensed matter: electrical, magnetic and optical

Condensed matter: structural, mechanical & thermal

Nanoscale science and low-D systems

Dates

Issue 1 (2009)



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