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Lookup NU author(s): Professor David XieORCiD
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND).
We synthesized cobalt tetroxide (Co3O4) silica nanocomposites based on the conventional tetraethyl orthosilicate (TEOS) monomer and ethoxy polysiloxane (ES40) oligomer by sol-gel chemistry coupled with rapid thermal process (RTP). The physicochemical properties and structural formation of cobalt oxide silica nanocomposites were comprehensive characterized. By using ES40, well-controlled, homogeneous nanoparticle dispersion and size of Co3O4 with 5 nm within the silica matrix were achieved leading to fractal-like morphology. The concentration of the Co3O4 nanocatalyst was also significantly enhanced by more than 50 folds. Fenton-like HCO3−/H2O2 catalytic system using acid orange 7 and nanocomposites was examined for organic degradation. 98% AO7 and naphthalene intermediates degradation efficiency was achieved after 20 min with ES40-derived catalyst, which was three to ten folds faster than that of the TEOS-derived catalyst and the commercial Co3O4 catalyst. The combined use of ES40 sol-gel and RTP enabled a simple way to nanomaterial preparation and lowers overall processing time.
Author(s): Liu L, Ding J, Sarrigani GV, Fitzgerald P, Merican ZMA, Lim JW, Tseng HH, Xie F, Zhang B, Wang DK
Publication type: Article
Publication status: Published
Journal: Applied Catalysis B: Environmental
Year: 2020
Volume: 262
Print publication date: 01/03/2020
Online publication date: 12/10/2019
Acceptance date: 28/09/2019
Date deposited: 31/08/2023
ISSN (print): 0926-3373
ISSN (electronic): 1873-3883
Publisher: Elsevier
URL: https://doi.org/10.1016/j.apcatb.2019.118246
DOI: 10.1016/j.apcatb.2019.118246
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