Journal of Inorganic Materials ›› 2016, Vol. 31 ›› Issue (9): 935-942.DOI: 10.15541/jim20160048

• Orginal Article • Previous Articles     Next Articles

Photoelectrochemical and Photocatalytic Properties of NiFe2O4/TiO2 Nanorod Arrays

GAO Xin1, LIU Xiang-Xuan1, ZHU Zuo-Ming2, XIE Zheng1, SHE Zhao-Bin3   

  1. (1. High-Tech Institute of Xi’an, Xi’an 710025, China; 2. High-Tech Institute of Beijing, Beijing 100085, China; 3. Xi’an Qinghua Company Northern Special Energy Group Co., Ltd Measurement and Physical and Chemical Center, Xi’an 710025, China)
  • Received:2016-01-21 Revised:2016-03-15 Published:2016-09-20 Online:2016-08-29
  • About author:GAO Xin.


Highly ordered one-dimensional TiO2 nanorod arrays (TiO2 NRAs) film was prepared by hydrothermal method. Then through dipping deposition and calcination, the NiFe2O4 modified TiO2 NRAs (NiFe2O4/TiO2 NRAs) was obtained. To analyze the phase and morphology structure of the NiFe2O4/TiO2 NRAs, SEM, TEM, XRD, Raman spectra, XPS, and UV-Vis spectrophotoeter were used. The results showed that NiFe2O4 nanoparticles were uniformly deposited on the surface of rutile TiO2 NRAs, which led to a red shift in absorption spectrum. Considering the photoelectric conversion performance, it is discovered that photocurrent of NiFe2O4/TiO2 was greatly improved compared with that of bare TiO2 under visible light irradiation. The photocurrent density of NiFe2O4/TiO2 NRAs was 12 times that of bare TiO2 NRAs in the voltage-current curve, and 8 times that of bare TiO2 NRAs in the current changes with time switch light. Under visible light irradiation, degradation rate of UDMH by NiFe2O4/TiO2 NRAs was about 3 times as much as that of bare TiO2 NRAs. Furthermore, schematic of photocatalytic activity under visible light was explored.

Key words: TiO2 NRAs, NiFe2O4/TiO2 NRAs, photoelectrochemical properties, photocatalysis

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