Wu Chun, Wang Xiaoyang, Pei Wenli, Zhao Dong, Wang Kai, Li Guojian, Wang Qiang
Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education), Northeastern University, Shenyang 110819, People's Republic of China.
Nanoscale. 2019 Aug 15;11(32):15023-15028. doi: 10.1039/c9nr04565a.
A 6 Tesla high magnetic field (HMF) was separately introduced into the nucleation stage and growth stage and into both stages during the wet-chemical synthesis of FePt nanoparticles. The HMF refined particle sizes and increased the nucleation rate in the nucleation stage and tailored shapes and refined sizes in the growth stage. Extension of nucleation time increased the nucleation rate more than that of the HMF, which increasing was higher enough to tailor the shapes of FePt nanoparticles. Controlling nucleation is a feasible strategy to tailor the shapes and sizes of wet-chemical synthesized nanoparticles.
在FePt纳米颗粒的湿化学合成过程中，将6特斯拉的高磁场（HMF）分别引入成核阶段和生长阶段以及两个阶段。高磁场细化了颗粒尺寸，在成核阶段提高了成核速率，并在生长阶段调整了形状并细化了尺寸。延长成核时间比高磁场更能提高成核速率，其增加程度足以调整FePt纳米颗粒的形状。控制成核是调整湿化学合成纳米颗粒形状和尺寸的可行策略。
