Journal
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
Volume 637, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.colsurfa.2021.128203
Keywords
Organosilica; Bridged polysilsesquioxane; Non-spherical; Sol-gel
Categories
Funding
- National Natural Science Foundation of China [21776080]
- Innovation Program of Shanghai Municipal Education Commission [2019-01-07-00-02E00061]
Ask authors/readers for more resources
Non-spherical bridged polysilsesquioxane (BPS) particles were successfully synthesized using a one-step sol-gel method. The presence of ammonia was found to be crucial for constructing different morphologies of BPS particles. Morphological and compositional analysis indicated the existence of silanol groups on the particle surface. A possible formation mechanism was proposed based on these results.
Bridged polysilsesquioxanes (BPS) are promising organic-inorganic hybrid materials with tunable properties and versatile applications. However, the facile synthesis of non-spherical BPS particles still remains a challenge. Herein, non-spherical BPS particles were prepared through a one-step sol-gel method using 1, 2-bis (triethoxysilyl) ethane (BTSE) and vinyltrimethoxysilane (VTMS) as precursors. The catalysis of ammonia was essential in constructing non-spherical BPS particles. With the amount of ammonia increasing, the morphology of BPS particles could range from bowl-like to raspberry-like. Scanning electron microscope (SEM) was used to observe the morphologies and track the growth process of BPS particles. The result of Si-29 nuclear magnetic resonance (NMR) and X-ray photoelectron spectroscopy (XPS) implied that the inner and surface composition of BPS particles was different and silanol groups existed on the surface. Hence, we proposed a possible formation mechanism in accordance with these results and expected that this work would contribute to the synthesis of desired morphologies of BPS particles in various fields.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available