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AuthorYang, Xuanyu
AuthorCheng, Xiaowei
AuthorElzatahry, Ahmed A.
AuthorChen, Jinyang
AuthorAlghamdim, Abdulaziz
AuthorDeng, Yonghui
Available date2020-05-15T00:15:02Z
Publication Date2019
Publication NameChinese Chemical Letters
ISSN10018417
URIhttp://dx.doi.org/10.1016/j.cclet.2018.06.026
URIhttp://hdl.handle.net/10576/14896
AbstractA versatile wet impregnation method was employed to conveniently and controllably deposit Fe2O3 nanoparticles on zeolites including commercial Y, mordenite and ZSM-5 with the similar framework Si/Al ratios and crystal sizes, respectively. The ultrafine Fe2O3 nanoparticles in size of 5 nm can be highly dispersed on zeolite Y matrix due to its much better wettability than ZSM-5 and mordenite. By using the obtained Fe2O3/zeolite composite as the heterogeneous Fenton-like catalysts, the degradation of phenol as a model reaction was systematically investigated, including the zeolite supports, particle size and dispersion of Fe2O3, and reaction conditions of H2O2 concentration, temperature, and pH value. The catalyst based on zeolite Y with Fe loading of 9% exhibited the best phenol degradation efficiency (> 90%) in neutral pH within 2 h. Its high catalytic activity in Fenton reaction can be attributed to the bifunctional properties of strong surface Bronsted acidity and high reactivity of octahedral Fe3+ in the highly-dispersed ultrafine Fe2O3 nanoparticles in size of 5 nm, which were the primary active centers to quickly decompose H2O2 into hydroxyl radicals. Since phenol degradation can be performed under mild conditions of ambient temperature (283-323 K) and a wide pH range (4.0-7.0), the catalysts can be easily recovered for recyclable use with stable degradation activity, which own the immense potential in deep treatment of organic pollutants in industrial wastewater.
SponsorThis work was sponsored by Shanghai Pujiang Program, China (No. 16PJ1401100 ), and the Shanghai Committee of Science and Technology, China (No. 15ZR1402000 ), Key Basic Research Program of Science and Technology Commission of Shanghai Municipality (No. 17JC1400100 ), the NSF of China (No. 21673048 ), National Youth Top Talent Support Program of National High-Level Personnel of Special Support Program (Youth Top-notch Talent Support Program) , the State Key Laboratory of Transducer Technology of China (No. SKT1503 ). The authors extend their appreciation to the International Scientific Partnership Program ISPP at King Saud University for funding this research work through ISPP# 0094. Appendix A
Languageen
PublisherElsevier B.V.
SubjectFe2O3 nanoparticles
SubjectFenton-like reaction
SubjectHighly-dispersed
SubjectPhenol degradation
SubjectZeolite
TitleRecyclable Fenton-like catalyst based on zeolite Y supported ultrafine, highly-dispersed Fe2O3 nanoparticles for removal of organics under mild conditions
TypeArticle
Pagination324-330
Issue Number2
Volume Number30


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