Environmental mineralization of caffeine micro-pollutant by Fe-MFI zeolites

被引：13
作者：
Motuzas, Julius [1 ]
Drobek, Martin [2 ]
Martens, Dana L. [1 ]
Vallicari, Cyril [2 ]
Julbe, Anne [2 ]
da Costa, Joao C. Diniz [1 ]
机构：
[1] Univ Queensland, Sch Chem Engn, Funct Interfacial Mat & Membranes FIM2Lab, St Lucia, Qld 4072, Australia
[2] Univ Montpellier, UMR CNRS ENSCM UM 5635, Inst Europeen Membranes, Cc 047,Pl Eugene Bataillon, F-34095 Montpellier 5, France
来源：
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH | 2018年 / 25卷 / 04期
基金：
澳大利亚研究理事会;
关键词：
Fe-MFI; Zeolite; Caffeine; Micro-pollutant; Mineralization; Fenton reaction; FENTON; WATER; DEGRADATION; REACTIVITY; OXIDATION; CRYSTALS; CATALYST; REMOVAL; PHENOL; OXIDE;
D O I：
10.1007/s11356-017-0530-0
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Environmentally emerging micro-pollutant, caffeine, was mineralized (i.e., full degradation) by the isomorphic incorporation of Fe into silicalite-1 (mordenite framework inverted (MFI) structure zeolite) through a microwave synthesis method. The Fe incorporation conferred mesopore formation that facilitated caffeine access and transport to the MFI zeolite structure. Increasing the Fe content favored the formation of Fe(O)(4) sites within the MFI structure. The catalytic activity for the degradation of caffeine increased as a function of Fe(O)(4) sites via a Fenton-like heterogeneous reaction, otherwise not attainable using Fe-free pure MFI zeolites. Caffeine degradation reached 96% (TOC based) for zeolites containing 2.33% of Fe.
引用
收藏
页码：3628 / 3635
页数：8
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