Enhanced catalyst dispersion and structural control of Co3O4-silica nanocomposites by rapid thermal processing

Liang Liu; Jia Ding; Gholamreza Vahedi Sarrigani; Paul Fitzgerald; Zulkifli Merican Aljunid Merican; Jun Wei Lim; Hui Hsin Tseng; Fengwei Xie; Binjia Zhang; David K. Wang

doi:10.1016/j.apcatb.2019.118246

Enhanced catalyst dispersion and structural control of Co₃O₄-silica nanocomposites by rapid thermal processing

Liang Liu, Jia Ding, Gholamreza Vahedi Sarrigani, Paul Fitzgerald, Zulkifli Merican Aljunid Merican, Jun Wei Lim, Hui Hsin Tseng, Fengwei Xie, Binjia Zhang, David K. Wang

Research output: Contribution to journal › Article › peer-review

11 Citations (SciVal)

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.

Original language	English
Article number	118246
Journal	Applied Catalysis B: Environmental
Volume	262
DOIs	https://doi.org/10.1016/j.apcatb.2019.118246
Publication status	Published - 1 Mar 2020

Funding

D. K. Wang thanks the funding supports given by the Australian Research Council (DE150101687; DP190101734), and the Sydney Southeast Asia Centre. Z. A. M. Merican and D. K. Wang thank the funding support by Yayasan UTP for the Fundamental Research Grant (FRGS-YUTP). Part of this research was undertaken on the XAS beamline and SAXS/WAXS beamline at the Australian Synchrotron, Australia. The in-situ SAXS study was also supported by the Sydney Analytical Core Research Facilities. This work benefited from the use of the SasView application, originally developed under NSF Award DMR-0520547. SasView also contains code developed with funding from the EU Horizon 2020 programme under the SINE2020 project Grant No 654000. D. K. Wang thanks the funding supports given by the Australian Research Council ( DE150101687 ; DP190101734 ), and the Sydney Southeast Asia Centre . Z. A. M. Merican and D. K. Wang thank the funding support by Yayasan UTP for the Fundamental Research Grant (FRGS-YUTP). Part of this research was undertaken on the XAS beamline and SAXS/WAXS beamline at the Australian Synchrotron, Australia. The in-situ SAXS study was also supported by the Sydney Analytical Core Research Facilities . This work benefited from the use of the SasView application, originally developed under NSF Award DMR-0520547. SasView also contains code developed with funding from the EU Horizon 2020 programme under the SINE2020 project Grant No 654000 .

Funders	Funder number
FRGS-YUTP
Yayasan UTP
National Science Foundation	DMR-0520547
Horizon 2020 Framework Programme	654000
Australian Research Council	DP190101734, DE150101687
Sydney Southeast Asia Centre, University of Sydney

Keywords

Cobalt tetroxide silica
Fenton reaction
Heterogeneous catalysis
Rapid thermal processing
Sol-gel

ASJC Scopus subject areas

Catalysis
General Environmental Science
Process Chemistry and Technology

Access to Document

10.1016/j.apcatb.2019.118246

Cite this

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title = "Enhanced catalyst dispersion and structural control of Co3O4-silica nanocomposites by rapid thermal processing",

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.",

keywords = "Cobalt tetroxide silica, Fenton reaction, Heterogeneous catalysis, Rapid thermal processing, Sol-gel",

author = "Liang Liu and Jia Ding and Sarrigani, {Gholamreza Vahedi} and Paul Fitzgerald and {Aljunid Merican}, {Zulkifli Merican} and Lim, {Jun Wei} and Tseng, {Hui Hsin} and Fengwei Xie and Binjia Zhang and Wang, {David K.}",

year = "2020",

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doi = "10.1016/j.apcatb.2019.118246",

language = "English",

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T1 - Enhanced catalyst dispersion and structural control of Co3O4-silica nanocomposites by rapid thermal processing

AU - Liu, Liang

AU - Ding, Jia

AU - Sarrigani, Gholamreza Vahedi

AU - Fitzgerald, Paul

AU - Aljunid Merican, Zulkifli Merican

AU - Lim, Jun Wei

AU - Tseng, Hui Hsin

AU - Xie, Fengwei

AU - Zhang, Binjia

AU - Wang, David K.

PY - 2020/3/1

Y1 - 2020/3/1

N2 - 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.

AB - 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.

KW - Cobalt tetroxide silica

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KW - Heterogeneous catalysis

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