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Mesoporous Nickel Ferrites with Spinel Structure Prepared by an Aerosol Spray Pyrolysis Method for Photocatalytic Hydrogen Evolution
被引:76
作者:
Hong, Dachao
[1
]
Yamada, Yusuke
[1
]
Sheehan, Margaret
[2
]
Shikano, Shinya
[1
]
Kuo, Chun-Hong
[2
]
Tian, Ming
[2
]
Tsung, Chia-Kuang
[2
]
Fukuzumi, Shunichi
[1
]
机构:
[1] Osaka Univ, Japan Sci & Technol Agcy, ALCA, Grad Sch Engn,Dept Mat & Life Sci, Suita, Osaka 5650871, Japan
[2] Boston Coll, Merkert Chem Ctr, Dept Chem, 2609 Beacon St, Chestnut Hill, MA 02467 USA
关键词:
Nickel ferrite;
Hydrogen evolution;
Photocatalysis;
Metal oxide sphere;
Crystallinilty;
Surface area;
Ramp rate;
VISIBLE-LIGHT-DRIVEN;
WATER OXIDATION;
SURFACE-AREA;
NIFE2O4;
ROUTE;
CATALYST;
D O I:
10.1021/sc500484b
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
Submicron-sized mesoporous nickel ferrite (NiFe2O4) spheres were prepared by an aerosol spray pyrolysis method using Pluronic F127 as a structure-directing agent, and their photocatalytic performance for hydrogen (H-2) evolution was examined in an aqueous MeOH solution by visible light irradiation (lambda > 420 nm). The structure of the spherical mesoporous nickel ferrites was studied by transmission electron microscopy, powder X-ray diffraction, and N-2 adsorption desorption-desorption isotherm measurements. Mesoporous NiFe2O4 spheres of high specific surface area (278 m(2) g(-1)) with a highly crystalline framework were prepared by adjusting the amount of structure-directing agent and the calcining condition. High photocatalytic activity of mesoporous NiFe2O4 for H-2 evolution from water with methanol was achieved due to the combination of high surface area and high crystallinity of the nickel ferrites.
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页码:2588 / 2594
页数:7
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