Atmospheric pressure plasma-assisted green synthesis of amphiphilic SiO2 Janus particles--颗粒学报PARTICUOLOGY

Panwar, K., Jassal, M., & Agrawal, A. K. (2017). Atmospheric pressure plasma-assisted green synthesis of amphiphilic SiO2 Janus particles. Particuology, 33, 50-54. https://doi.org/10.1016/j.partic.2016.12.004

Atmospheric pressure plasma-assisted green synthesis of amphiphilic SiO₂ Janus particles

Kamlesh Panwar, Manjeet Jassal ^*, Ashwini K. Agrawal ^*

SMITA Research Lab, Department of Textile Technology, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India

10.1016/j.partic.2016.12.004

Volume 33, August 2017, Pages 50-54

Received 20 October 2016, Revised 6 December 2016, Accepted 9 December 2016, Available online 14 April 2017, Version of Record 13 June 2017.

E-mail: manjeetjassal@gmail.com; ashwini@smita-iitd.com

Highlights

• Amphiphilic SiO₂ Janus particles were prepared using an atmospheric pressure plasma process.

• The morphology of the Janus particles synthesized was confirmed by fluorescence microscopy.

• The process is also versatile to carry out variety of particle modifications.

Abstract

A facile green approach for the synthesis of amphiphilic SiO₂ Janus particles using low temperature atmospheric pressure plasma is reported in this study. Monodispersed SiO₂ particles were masked by embedding half of their surface inside a polystyrene film. The exposed surfaces of the SiO₂ particles were readily modified using He/CF₃CFH₂ low-temperature atmospheric pressure plasma to obtain amphiphilic Janus particles. Their amphiphilic nature was confirmed using fluorescent microscopy by tagging their hydrophilic part with a fluorescent dye. The present method can be used to generate amphiphilic Janus particles with a variety of functionalities, which may find applications as surfactants and surface modifying agents.

Graphical abstract

Keywords

Hydrophilic; Hydrophobic; SiO₂; FITC; Atmospheric pressure plasma

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