Effect of Magnetic Carrier NiFe2O4 Nanoparticles on Physicochemical and Catalytic Properties of Magnetically Separable Photocatalyst TiO2/NiFe2O4

doi:10.1007/s40242-013-2143-6

高等学校化学研究 ›› 2013, Vol. 29 ›› Issue (1): 121-125.doi: 10.1007/s40242-013-2143-6

Effect of Magnetic Carrier NiFe₂O₄ Nanoparticles on Physicochemical and Catalytic Properties of Magnetically Separable Photocatalyst TiO₂/NiFe₂O₄

XU Shi-hong¹, TAN Dong-dong¹, BI De-fu¹, SHI Peng-hui¹, LU Wei², SHANGGUAN Wen-feng³, MA Chun-yan¹

1. School of Environmental Science and Engineering, Donghua University, Shanghai 201620, P. R. China;
2. Beijing General Municipal Engineering Design & Research Institute, Beijing 100082, P. R. China;
3. Research Center for Combustion and Environment Technology, School of Mechanical and Power Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China

收稿日期:2012-04-09 修回日期:2012-06-27 出版日期:2013-02-01 发布日期:2013-01-23
基金资助:
Supported by the Shanghai Municipal Natural Science Foundation, China(Nos.11ZR1400400, 11ZR1400800), the Fundamental Research Funds for the Central Universities, China(No.12D11303) and the Shanghai Leading Academic Discipline Project, China(No.B604).

Effect of Magnetic Carrier NiFe₂O₄ Nanoparticles on Physicochemical and Catalytic Properties of Magnetically Separable Photocatalyst TiO₂/NiFe₂O₄

XU Shi-hong¹, TAN Dong-dong¹, BI De-fu¹, SHI Peng-hui¹, LU Wei², SHANGGUAN Wen-feng³, MA Chun-yan¹

1. School of Environmental Science and Engineering, Donghua University, Shanghai 201620, P. R. China;
2. Beijing General Municipal Engineering Design & Research Institute, Beijing 100082, P. R. China;
3. Research Center for Combustion and Environment Technology, School of Mechanical and Power Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China

Received:2012-04-09 Revised:2012-06-27 Online:2013-02-01 Published:2013-01-23
Supported by:
Supported by the Shanghai Municipal Natural Science Foundation, China(Nos.11ZR1400400, 11ZR1400800), the Fundamental Research Funds for the Central Universities, China(No.12D11303) and the Shanghai Leading Academic Discipline Project, China(No.B604).

摘要/Abstract

摘要：

A series of magnetically separable photocatalyst TiO₂/NiFe₂O₄(TN) with different mass ratios of NiFe₂O₄ to TiO₂ was prepared by sol-gel method. The X-ray diffraction(XRD), X-ray photoelectron spectroscopy(XPS), transmission electron microscopy(TEM), ultraviolet-visible spectroscopy(UV-Vis), Brunauer-Emmett-Teller(BET) surface analysis and photoluminescence spectroscopy(PL) were used to characterize the photocatalyst TN. The XRD patterns of TN indicate that adulterating a smidgen of NiFe₂O₄ into TiO₂(about 0.1%, mass ratio) can promote the phase transformation of TiO₂, however, when the doped amount of NiFe₂O₄ surpasses 1%, the introduction of NiFe₂O₄ can inhibit the growth of TiO₂ crystal grain and reduce the size of TiO₂ crystal grain. The XPS results of TN indicate that some Fe³⁺ replace Ti⁴⁺ of the TiO₂ lattice forming Fe―O―Ti bonds. The PL analysis of TN shows that the NiFe₂O₄ nanoparticles in photocatalyst TN play the role of the effective recombination centre of the photogenerated electrons and holes, leading to the decrease in photocatalytic activity.

关键词: Photocatalyst, TiO₂, NiFe₂O₄, Magnetical separation

Abstract:

Key words: Photocatalyst, TiO₂, NiFe₂O₄, Magnetical separation

XU Shi-hong, TAN Dong-dong, BI De-fu, SHI Peng-hui, LU Wei, SHANGGUAN Wen-feng, MA Chun-yan. Effect of Magnetic Carrier NiFe₂O₄ Nanoparticles on Physicochemical and Catalytic Properties of Magnetically Separable Photocatalyst TiO₂/NiFe₂O₄[J]. 高等学校化学研究, 2013, 29(1): 121-125.

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Effect of Magnetic Carrier NiFe₂O₄ Nanoparticles on Physicochemical and Catalytic Properties of Magnetically Separable Photocatalyst TiO₂/NiFe₂O₄

Effect of Magnetic Carrier NiFe₂O₄ Nanoparticles on Physicochemical and Catalytic Properties of Magnetically Separable Photocatalyst TiO₂/NiFe₂O₄

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