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ABSTRACT: Bi2FeVO7 was prepared by a solid-state reaction technique for the first time and the structural and photocatalytic properties of Bi2FeVO7 were studied. The results shows that this compound crystallized in the tetragonal crystal system with space group I4/mmm.
Moreover, the band gap of Bi2FeVO7 was estimated to be about 2.22(6) eV. For the photocatalytic water splitting reaction, H2 or O2 evolution was observed from pure water with Bi2FeVO7 as the photocatalyst by ultraviolet light irradiation. Degradation of aqueous methylene blue (MB) dye by photocatalytic way
over this compound was further studied under visible light irradiation. Bi2FeVO7 shows higher catalytic activity compared to TiO2 (P-25) for MB photocatalytic degradation under visible light irradiation. Complete removal of aqueous MB was realized after
visible light irradiation for 170 min with Bi2FeVO7 as the photocatalyst. The reduction of the total organic carbon (TOC) and the formation of inorganic products, SO
4
2−
and NO
3
−
revealed the continuous mineralization of aqueous MB during the photocatalytic course.
Research on Chemical Intermediates 05/2012; 33(6):487-500. · 0.70 Impact Factor
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Kai Chen,
Feng Gao,
Weiwei Lin, Hongling Cai,
Guolin Li,
Xingwei Dong,
Song Peng,
Xiaoshan Wu,
Mao Yang,
Jun Du,
Xiaomei Lu,
Junming Liu,
Jinsong Zhu
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ABSTRACT: Magnetism and ferroelectricity at room temperature are observed in the NiBi2O4 ceramics. Both the time reversal and the inversion symmetry of the structure (space group F-43m) are broken. The saturation magnetization is 0.028 emu/g and the saturation polarization 2Ps~4.0 μ C/cm2. NiBi2O4 also shows other room-temperature multiferroic properties, e.g. the piezoelectric coefficient (d33), the polarized dielectric character, the magneto-dielectric response and the magnetoelectric effect.
EPL (Europhysics Letters) 01/2010; 89(2):27004. · 2.17 Impact Factor
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ABSTRACT: Bi2AlVO7 was prepared by solid-state reaction technique for the first time and the structural and photocatalytic properties of Bi2AlVO7 and Bi2InTaO7 were investigated. The results showed that Bi2AlVO7 crystallized in the tetragonal crystal system with space group I4/mmm. In addition, the band gaps of Bi2AlVO7 and Bi2InTaO7 were estimated to be about 2.06 and 2.81eV. The photocatalytic degradation of aqueous methylene blue (MB) dye with Bi2AlVO7 or Bi2InTaO7 as catalyst was investigated under visible light irradiation. Bi2AlVO7 showed higher photocatalytic activity compared with Bi2InTaO7 for photocatalytic degradation of MB under visible light irradiation. Complete removal of aqueous MB dye was realized after visible light irradiation for 160min with Bi2AlVO7 as the photocatalyst. The reduction of the total organic carbon (TOC) and the formation of inorganic products, SO42− and NO3− revealed the continuous mineralization of aqueous MB dye during the photocatalytic process. The possible photocatalytic degradation pathway of aqueous MB dye was revealed under visible light irradiation.
Journal of Hazardous Materials - J HAZARD MATER. 01/2009; 164(2):781-789.
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ABSTRACT: Bi(2)AlVO(7) was prepared by solid-state reaction technique for the first time and the structural and photocatalytic properties of Bi(2)AlVO(7) and Bi(2)InTaO(7) were investigated. The results showed that Bi(2)AlVO(7) crystallized in the tetragonal crystal system with space group I4/mmm. In addition, the band gaps of Bi(2)AlVO(7) and Bi(2)InTaO(7) were estimated to be about 2.06 and 2.81 eV. The photocatalytic degradation of aqueous methylene blue (MB) dye with Bi(2)AlVO(7) or Bi(2)InTaO(7) as catalyst was investigated under visible light irradiation. Bi(2)AlVO(7) showed higher photocatalytic activity compared with Bi(2)InTaO(7) for photocatalytic degradation of MB under visible light irradiation. Complete removal of aqueous MB dye was realized after visible light irradiation for 160 min with Bi(2)AlVO(7) as the photocatalyst. The reduction of the total organic carbon (TOC) and the formation of inorganic products, SO(4)(2-) and NO(3)(-) revealed the continuous mineralization of aqueous MB dye during the photocatalytic process. The possible photocatalytic degradation pathway of aqueous MB dye was revealed under visible light irradiation.
Journal of hazardous materials 10/2008; 164(2-3):781-9. · 4.14 Impact Factor
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Kai Chen,
Feng Gao,
Weiwei Lin, Hongling Cai,
Guolin Li,
Xingwei Dong,
Song Peng,
Xiaoshan Wu,
Mao Yang,
Jun Du,
Xiaomei Lu,
Junming Liu,
Jinsong Zhu
http://dx.doi.org/10.1209/0295-5075/89/27004.
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ABSTRACT: Bi2GaVO7 was synthesized by solid-state reaction method for the first time and its structural and photocatalytic properties were investigated. The results indicated that this compound crystallizes in the tetragonal crystal system with space group I4/mmm. In addition, the band gap of Bi2GaVO7 was estimated to be about 2.13(8) eV. For the photocatalytic water splitting reaction, H2 or O2 evolution was observed from pure water with Bi2GaVO7 as the photocatalyst under ultraviolet light irradiation. Photocatalytic degradation of aqueous methylene blue (MB) dye over this compound was further investigated under visible light irradiation. Bi2GaVO7 showed notable higher catalytic activity compared to P-25 for MB photocatalytic degradation under visible light irradiation. Complete removal of aqueous MB was observed after visible light irradiation for 170 min with Bi2GaVO7 as the photocatalyst. The decrease of the total organic carbon (TOC) and the formation of inorganic products, SO42− and NO3−, demonstrated the continuous mineralization of aqueous MB during the photocatalytic process.
Materials Chemistry and Physics 104(1):119-124. · 2.23 Impact Factor
