Please use this identifier to cite or link to this item: http://hdl.handle.net/10497/22457
Title: 
Authors: 
Keywords: 
α-Fe2O3
Cluster-like
Nanoneedle
Molecular sieve
Phenol hydroxylation
Antibacterial agent
Issue Date: 
2020
Citation: 
Yang, F., Zhou, L., Gao, S., Wang, X., Chen, J., Yuan, A., & Ang, E. H. (2020). Combining two active states of FeOx in-situ in molecular sieve to deliver enhanced catalytic activity via creating special configuration and synergy. Journal of Alloys and Compounds, 844, Article 156137. https://doi.org/10.1016/j.jallcom.2020.156137
Abstract: 
Combining different active states of metal species together in special configuration might trigger interesting synergetic effect for catalytic process. As a proof-of-concept, the present study has developed an ingenious approach to reach functional mesoporous molecular sieve which in-situ encapsulates two different states of highly-active FeOx inside centered core and nano-tunnel of mesoporous silica, respectively. The α-Fe2O3 in-situ immobilized nanoneedles coated by the porous silica afford ∼5 nm diameter, plus highly-dispersed Fe2O3 cluster-like species attachment in confined mesopore, which synergistically contributes to high activity and stabilization of catalyst. The combined iron oxides in special configuration deliver an appreciable catalytic activity in phenol hydroxylation (46.4% conversion, 87.9% benzenediol selectivity) during multiple catalytic cycles, compared to some reported results, which benefited from accelerating production of oxidative free radicals from H2O2 and the tailored micrpopore (∼1.4 nm) which could enhance the catalytic selectivity of targeted products. Furthermore, the photocatalytic antimicrobial effect of Fe catalyst against Escherichia coli was also demonstrated via the constructed synergy of two FeOx nanospecies with assistance of light.
Description: 
This is the final draft, after peer-review, of a manuscript published in Journal of Alloys and Compounds. The published version is available online at https://doi.org/10.1016/j.jallcom.2020.156137
URI: 
ISSN: 
0925-8388
Other Identifiers: 
10.1016/j.jallcom.2020.156137
Website: 
Grant ID: 
National Natural Science Foundation (Grant no. 21908085)
National Natural Science Foundation (Grant no. U1703118)
National Natural Science Foundation (Grant no. 51672114)
Natural Science Foundation of Jiangsu Province (Grant no. BK20190961)
Natural Science Foundation of Jiangsu Province (Grant no. BK20181364)
Natural Science Foundation of Jiangsu Province (Grant no. BK20161357)
National Science Foundation of the Jiangsu Higher Education Institutions of China (Grant no. 19KJA310003)
Scientific Research Foundation of Jiangsu University of Science & Technology (Grant no. 1112921902)
Funding Agency: 
Jiangsu University of Science & Technology
Appears in Collections:Journal Articles

Files in This Item:
File Description SizeFormat 
JAC-844-156137.pdf
  Until 2023-01-01
3.73 MBAdobe PDFUnder embargo until Jan 01, 2023
Show full item record

Page view(s)

11
checked on Nov 24, 2020

Download(s)

1
checked on Nov 24, 2020

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.