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	Preparation of gold nanoplates by UV irradiation and the reaction mechanisms
	Guo Bin ; Shan Wen-Wen ; Luo Jiang-Shan ; Tang Yong-Jian ; Cheng Jian-Ping
	2010-05-10 ; 2010-05-10
关键词	gold nanoplate UV irradiation seed poly(vinylpyrrolidone) surface plasmon resonance SILVER NANOSPHERES AQUEOUS-SOLUTION POLYOL PROCESS SIZE AU GROWTH NANOPARTICLES NANOSHEETS REDUCTION NANOWIRES Chemistry, Multidisciplinary
中文摘要	Gold nanoplates of truncated triangular or hexagonal shape within 100 nm were prepared by UV irradiation of solution containing HAuCl4, poly(vinylpyrrolidone) (PVP) and gold nanoseeds at room temperature within 30 min. Energy-dispersive X-ray spectra, electron diffraction and X-ray diffraction analyses revealed that the nanoplates were highly pure face-centered cubic gold single crystals with I 1111 planes as their basal planes. Infrared transmittance spectra analysis suggested there existed interaction between PVP and gold. The nanoplates showed two surface plasmon resonance (SPR) absorption bands in UV-Vis absorption spectra due to their anisotropic structure. The absorption spectra of products under various experimental conditions indicated that PVP reacted as both reductant and capping agent, high-intensity UV irradiation accelerated the reaction, and the gold seeds imposed catalysis effect on the reaction. The adding amount of seeds held an optimum value at which the average size of the nanoplates reached top as large as 80 nm together with their in-plane dipolar SPR absorption band locating at 950 nm. The size of the nanoplates decreased and the in-plane dipolar band blue-shifted when the adding amount of seeds exceeded that value.
语种	中文 ; 中文
出版者	SCIENCE CHINA PRESS ; BEIJING ; 16 DONGHUANGCHENGGEN NORTH ST, BEIJING 100717, PEOPLES R CHINA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/22190]
专题	清华大学
推荐引用方式 GB/T 7714	Guo Bin,Shan Wen-Wen,Luo Jiang-Shan,et al. Preparation of gold nanoplates by UV irradiation and the reaction mechanisms[J],2010, 2010.
APA	Guo Bin,Shan Wen-Wen,Luo Jiang-Shan,Tang Yong-Jian,&Cheng Jian-Ping.(2010).Preparation of gold nanoplates by UV irradiation and the reaction mechanisms..
MLA	Guo Bin,et al."Preparation of gold nanoplates by UV irradiation and the reaction mechanisms".(2010).

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