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Enhanced catalyst dispersion and structural control of Co3O4-silica nanocomposites by rapid thermal processing
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Liu, Liang, Ding, Jia, Sarrigani, Gholamreza Vahedi, Fitzgerald, Paul, Aljunid Merican, Zulkifli Merican, Lim, Jun-Wei, Tseng, Hui-Hsin, Xie, Fengwei, Zhang, Binjia and Wang, David K. (2020) Enhanced catalyst dispersion and structural control of Co3O4-silica nanocomposites by rapid thermal processing. Applied Catalysis B: Environmental, 262 . 118246. doi:10.1016/j.apcatb.2019.118246
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WRAP-enhanced-catalyst-dispersion-structural-nanocomposites-Xie-2019.pdf - Accepted Version Embargoed item. Restricted access to Repository staff only until 12 October 2020. Contact author directly, specifying your specific needs. - Requires a PDF viewer. Available under License Creative Commons Attribution Non-commercial No Derivatives 4.0. Download (2073Kb) |
Official URL: https://doi.org/10.1016/j.apcatb.2019.118246
Abstract
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.
| Item Type: | Journal Article | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Divisions: | Faculty of Science > WMG (Formerly the Warwick Manufacturing Group) | ||||||||
| SWORD Depositor: | Library Publications Router | ||||||||
| Journal or Publication Title: | Applied Catalysis B: Environmental | ||||||||
| Publisher: | Elsevier BV | ||||||||
| ISSN: | 0926-3373 | ||||||||
| Official Date: | March 2020 | ||||||||
| Dates: |
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| Date of first compliant deposit: | 21 October 2019 | ||||||||
| Volume: | 262 | ||||||||
| Article Number: | 118246 | ||||||||
| DOI: | 10.1016/j.apcatb.2019.118246 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Publisher Statement: | ** Article version: AM ** Embargo end date: 17-10-2020 ** From Elsevier via Jisc Publications Router ** History: accepted 28-09-2019; epub 17-10-2019; issue date 31-03-2020. ** Licence for AM version of this article starting on 17-10-2020: http://creativecommons.org/licenses/by-nc-nd/4.0/ | ||||||||
| Access rights to Published version: | Restricted or Subscription Access |
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