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

doi:10.1016/j.apcatb.2019.118246

中山醫學大學機構典藏 CSMUIR > 健康管理學院 > 職業安全衛生學系暨碩士班 > 期刊論文 > Item 310902500/20467

Please use this identifier to cite or link to this item: https://ir.csmu.edu.tw:8080/ir/handle/310902500/20467

Title:	Enhanced catalyst dispersion and structural control of Co3O4-silica nanocomposites by rapid thermal processing
Authors:	Liu, L. Ding, J.b, Sarrigani, G.V. Fitzgerald, P. Aljunid Merican, Z.M. Lim, J.-W. Tseng, H.-H. Xie, F. Zhang, B. Wang, D.K.
Contributors:	中山醫學大學職業安全與衛生學系
Keywords:	Cobalt tetroxide silica;Fenton reaction;Heterogeneous catalysis;Rapid thermal processing;Sol-gel
Date:	2020-03
Issue Date:	2019-11-21T03:34:54Z (UTC)
Publisher:	Applied Catalysis B: Environmental
ISSN:	0926-3373
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. © 2019 Elsevier B.V.
URI:	https://ir.csmu.edu.tw:8080/ir/handle/310902500/20467
Relation:	Applied Catalysis B: Environmental, Volume 262, NO.118246
Appears in Collections:	[職業安全衛生學系暨碩士班] 期刊論文

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