Gold nanodumbbell-seeded growth of silver nanobars and nanobipyramids

Autor:	Jyun-Hao Lin, Chih-Wei Chen, Chao-Hsien Wang, Wei-Chi Hsieh, Jin-Pei Deng, Cheng-Yung Hsu
Rok vydání:	2014
Předmět:	Chemistry General Physics and Astronomy Nanoparticle Nanotechnology Nanorod Physical and Theoretical Chemistry Nuclear chemistry
Zdroj:	Chemical Physics Letters. :127-132
ISSN:	0009-2614
Popis:	Gold nanodumbbells (NDs) are prepared by the reduction of gold ions in the presence of gold nanorods. Gold NDs are then employed for the synthesis of gold–silver core–shell nanoparticles (Au@Ag NPs). The quasi-ellipsoidal NPs could be found at room temperature, but Au@Ag bar and triangular bipyramid (TBP) NPs were obtained at 75 °C. Our results show that the long ends of gold NDs are in the position of the bar center and closely paralleled the shorter edge of TBP. Mechanisms in the growth of silver on gold NDs are proposed for the formations of these Au@Ag NPs.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0d06b1ec95f99ba20b02801de30c9db6 https://doi.org/10.1016/j.cplett.2014.01.058 Zobrazit plný text záznamu Full Text from ScienceDirect