期刊
ACS NANO
卷 16, 期 10, 页码 16690-16698出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.2c06235
关键词
anisotropy; hollow particles; Janus; colloidal motor; flask-like
类别
资金
- National Key Research and Development Program of China
- National Natural Science Foundation of China
- [2021YFC2102800]
- [52173076]
Nanoparticles with anisotropic morphology and composition were successfully synthesized via a sol-gel process. The neck length of the particles could be controlled by different precursors, and colloidal motors with explicit directionality and tunable speeds were achieved by selectively loading Pt catalyst.
Nanoparticles with an anisotropic morphology and composition are flourishing in various scientific fields. Their morphology has a great impact on their functions, but the precise regulation of their growth and final morphology is still challenging. Here, flask-like Janus particles (FJPs) with different compositions segmented on the inner and outer surfaces were fabricated via a sol- gel process using different silane precursors. The neck length of the flask-like particles can be controllably regulated by employing different silane precursors. The Pt catalyst was selectively loaded in their cavities, and as-formed FJPs@Pt are employed as colloidal motors. Due to the adjustable neck length, the Janus colloidal motors have explicit directionality and tunable speeds (max diffusion coefficient is 18.2 mu m2 s-1).
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