期刊
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
卷 41, 期 26, 页码 11108-11118出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2016.04.088
关键词
Photo-catalysis; Zinc ferrite; Hydrogen production; Photo-electrochemical properties; EIS
资金
- European Union
- European Social Fund [TAMOP-4.2.2.B-15/1/KONV-2015-0004]
A(0.2)Zn(0.8)Fe(2)O(4) ferrites with A = Co, Ni and Cu were successfully prepared by co-precipitation followed by annealing at 650 degrees C. They were characterized by using XRD, EDX, BET, FTIR, RDS, electrical conductivity, Current-Potential, Mott-Schottky and Nyquist techniques and their photo-catalytic properties were evaluated in hydrogen production through water photo-reduction. XRD revealed the formation of cubic ferrospinel structures with particle sizes in the nano-range. BET surface areas of the ternary spinels were higher than that of the binary ZnFe2O4. The electrical conductivities of A(0.2)Zn(0.8)Fe(2)O(4) were found to obey the Arrhenius law with activation energies of conduction between 0.17 and 0.31 eV. They were found to be n-type semiconductors with narrow band gap. The photo-catalytic results for hydrogen production indicated that the Co substitution dramatically enhances the catalytic activity of ZnFe2O4. This substituted zinc ferrite shows the highest photo catalytic activity under visible light irradiation, which varies as follows: Co0.2Zn0.8Fe2O4 >> Ni0.2Zn0.8Fe2O4 > ZnFe2O4 > Cu0.2Zn0.8Fe2O4. (C) 2016 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据