文献类型：期刊文献

英文题名：Synthesis of gold Nanoshells through Improved Seed-Mediated Growth Approach: Brust-like, in Situ Seed Formation

作者：Gao, Yongping[1];Gu, Jinlou[1];Li, Liang[1];Zhao, Wenru[1];Li, Yongsheng[1]

机构：[1]E China Univ Sci & Technol, Sch Mat Sci & Engn, Minist Educ, Lab Low Dimens Mat Chem,Key Lab Ultrafine Mat, Shanghai 200237, Peoples R China

年份：2016

卷号：32

期号：9

起止页码：2251

外文期刊名：LANGMUIR

收录：;EI(收录号：20161102106473);WOS:【SCI-EXPANDED(收录号:WOS:000371851400013)】；

基金：This work was financially supported by the 973 Program (Grant No. 2012CB933602), the National Natural Science Foundation of China (Grant Nos. 51132009, 51172070, 51472085, and 5141101086), the Shu Guang project (Grant No. 11SG30), and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Gold compounds - Nanostructured materials - Nanoshells - Silica

摘要：Gold nanoshells have shown great potentials in various fields. However, the widely used seed-mediated growth method based on a silica template for gold nanoshells is a complex and time-consuming procedure. In this work, mercaptosilica was first used as a template to synthesize gold nanoshells through improved seed-mediated growth method. It is verified that gold seeds were formed and attached onto the mercaptosilica nanospheres through Brust-like, in situ process, which makes this method extremely time-saving and easy to manipulate. Importantly, the key factors affecting the in situ process were demonstrated, allowing fine control on the synthesis in a highly reproducible manner. The as-synthesized nanoshells are monodisperse with well-defined morphology and tunable near-IR plasmon resonance. Furthermore, other metal nanoparticles such as Pt and Pd could be grafted onto the surface of mercaptosilica nanospheres through the same Brustlike, in situ process. These provide new insights into seed attachment, and the improved seed-mediated growth approach based on Brust-like, in situ seed formation will take an important step forward toward the widespread application of gold nanoshells.