Microwave-Assisted Synthesis of C/SiO2 Composite with Controllable Silica Nanoparticle Size

Arif Aditya F.

Taniguchi Shuto

Izawa Takafumi

Kamikubo Kazuki

Iwasaki Hideharu

Ogi Takasi

ACS Omega

AC/SiO composite was produced from 3-aminophenol and tetraethyl orthosilicate (TEOS) by a synthesis protocol that involved microwave irradiation. This protocol featured simultaneous 3-aminophenol polymerization and TEOS hydrolysis and condensation, which were achieved rapidly in a microwave reactor. The SiO2 component was formed from low-concentration TEOS confined in cetyltrimethylammonium bromide micelles. We demonstrated a control of the SiO2 particle size, ranging from 20 to 90 nm, by varying the 3-aminophenol concentration. The carbon component provided a microporous structure that greatly contributed to the high specific surface area, 375 m2/g, and served as a host for the nitrogen functional groups with a content of 5.34%, 74% of which were pyridinic type. The composite formation mechanism was clarified from time-series scanning electron microscopy images and dynamic light scattering analysis. An understanding of the composite formation mechanism in this protocol will enable the design of composite morphologies for specific applications.

英語

American Chemical Society

© 2018 American Chemical Society, This is an open access article published under an ACS AuthorChoice License, which permits copying and redistribution of the article or any adaptations for non-commercial purposes.

[ISSN] 2470-1343

[DOI] 10.1021/acsomega.8b00340

[URI] https://pubs.acs.org/doi/full/10.1021/acsomega.8b00340