An Amine-Functionalized Iron(III) Metal-Organic Framework as Efficient Visible-Light Photocatalyst for Cr(VI) Reduction

被引：388
|
作者：
Shi, Li [1 ,2 ,3 ]
Wang, Tao [2 ,3 ]
Zhang, Huabin [2 ,3 ]
Chang, Kun [2 ,3 ]
Meng, Xianguang [1 ,2 ,3 ]
Liu, Huimin [2 ,3 ]
Ye, Jinhua [1 ,2 ,3 ,4 ,5 ]
机构：
[1] Hokkaido Univ, Grad Sch Chem Sci & Engn, Sapporo, Hokkaido, Japan
[2] Natl Inst Mat Sci, Int Ctr Mat Nanoarchitecton MANA, Tsukuba, Ibaraki, Japan
[3] Natl Inst Mat Sci, Environm Remediat Mat Unit, Tsukuba, Ibaraki, Japan
[4] Tianjin Univ, Sch Mat Sci & Engn, TU NIMS Joint Res Ctr, Tianjin 300072, Peoples R China
[5] Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300072, Peoples R China
来源：
ADVANCED SCIENCE | 2015年 / 2卷 / 03期
基金：
日本学术振兴会;
关键词：
AQUEOUS TIO2 SUSPENSIONS; CO2; REDUCTION; DRIVEN PHOTOCATALYST; ILLUMINATION; OXIDATION; IONS; NANOPARTICLES; NANOCRYSTALS; DEGRADATION; TEMPERATURE;
D O I：
10.1002/advs.201500006
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The photocatalytic reduction of Cr(VI) is investigated over iron(III)-based metal-organic frameworks (MOFs) structured as MIL-88B. It is found that MIL-88B (Fe) MOFs, containing Fe-3-mu(3)-oxo clusters, can be used as photocatalyst for the reduction of Cr(VI) under visible light irradiation, which is due to the direct excitation of Fe-3-mu(3)-oxo clusters. The amine-functionalized MIL-88B (Fe) MOFs (denoted as NH2-MIL-88B (Fe)) shows much higher efficiency for the photocatalytic Cr(VI) reduction under visible-light irradiation compared with MIL-88B (Fe). It is revealed that in addition to the direct excitation of Fe-3-mu(3)-oxo clusters, the amine functionality in NH2-MIL-88B (Fe) can also be excited and then transferred an electron to Fe-3-mu(3) -oxo clusters, which is responsible for the enhanced photocatalytic activity for Cr(VI) reduction. The enhanced photocatalytic activity for Cr(VI) reduction is also achieved for other two amine-functionalized iron(III)-based MOFs (NH2-MIL-53 (Fe) and NH2-MIL-101 (Fe)).
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页数：8
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