Promotion of the halide effect in the formation of shaped metal nanocrystals via a hybrid cationic, polymeric stabilizer: Octahedra, cubes, and anisotropic growth

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• 作者：Brian T. Sneed^a ; Matthew C. Golden^a ; Yejing Liu^b ; Hiang K. Lee^b ; Ilektra Andoni^a ; Allison P. Young^a ; Greg McMahon^a ; Natasha Erdman^c ; Masateru Shibata^c ; Xing Yi Ling^b ; Chia-Kuang Tsung^a ; ^{frank.tsung@bc.edu" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Shaped nanoparticles ; Capping agents ; Stabilizers ; Halide effect ; Cuboctopods
• 刊名：Surface Science
• 出版年：2016
• 出版时间：June 2016
• 年：2016
• 卷：648
• 期：Complete
• 页码：307-312
• 全文大小：1291 K

文摘

To promote the effect of halide ions (Cl^-, Br^-, and I^-) in facet-selective growth of {111} and {100} of shaped metal nanocrystals, we utilize PDADMAC, a hybrid cationic, polymeric stabilizer. SERS and synthesis experiments provide evidence supporting that the higher amount of PDADMA⁺ at surfaces promotes the local adsorption of halides, allowing the creation of Pd cubes, octahedra, and cuboctopods.