Ranjan Priyadarshi, Kaplan-Ashiri Ifat, Popovitz-Biro Ronit, Cohen Sidney R, Houben Lothar, Tenne Reshef, Lahav Michal, van der Boom Milko E
Department of Organic Chemistry, Department of Materials and Interfaces, and Department of Chemical Research Support, The Weizmann Institute of Science, Rehovot 7610001, Israel.
ACS Omega. 2018 Jun 18;3(6):6533-6539. doi: 10.1021/acsomega.8b00779. eCollection 2018 Jun 30.
In this paper, we demonstrate the formation of hybrid nanostructures consisting of two distinctive components mainly in a one-to-one ratio. Thermolysis of inorganic nanotubes (INT) and closed-cage, inorganic fullerene-like (IF) nanoparticles decorated with a dense coating of metallic nanoparticles (M = Au, Ag, Pd) results in migration of relatively small NPs or surface-enhanced diffusion of atoms or clusters, generating larger particles (ripening). AuNP growth on the surface of INTs has been captured in real time using in situ electron microscopy measurements. Reaction of the AuNP-decorated INTs with an alkylthiol results in a chemically induced NP fusion process at room temperature. The NPs do not dissociate from the surfaces of the INTs and IFs, but for proximate IFs we observed fusion between AuNPs originating from different IFs.
在本文中，我们展示了主要以一对一比例由两种不同成分组成的混合纳米结构的形成。无机纳米管（INT）以及用致密金属纳米颗粒涂层（M = Au、Ag、Pd）修饰的封闭笼状无机富勒烯类（IF）纳米颗粒的热解导致相对较小的纳米颗粒迁移或原子或团簇的表面增强扩散，从而生成更大的颗粒（熟化）。使用原位电子显微镜测量实时捕捉到了金纳米颗粒在INT表面的生长。用烷基硫醇处理修饰有金纳米颗粒的INT会在室温下引发化学诱导的纳米颗粒融合过程。纳米颗粒不会从INT和IF的表面解离，但对于相邻的IF，我们观察到源自不同IF的金纳米颗粒之间发生了融合。
