Journal of Materials Science: Materials in Electronics

, Volume 30, Issue 17, pp 16110–16123 | Cite as

Effects specific surface area and oxygen vacancy on the photocatalytic properties of mesoporous F doped SnO2 nanoparticles prepared by hydrothermal method

  • Xiaolong Wang
  • Min Xu
  • Lu Liu
  • Yan Cui
  • Hansong Geng
  • Hongli Zhao
  • Bo LiangEmail author
  • Jingkai YangEmail author


Mesoporous Fluorine doped SnO2 (FTO) nanoparticles (NPs) have been successfully synthesized by hydrothermal process. Subsequent annealing process at 350 °C, 500 °C, 650 °C and 800 °C has been carried out to synthesize FTO photocatalysts with different specific surface areas and oxygen vacancy contents. X-ray diffraction (XRD), transmission electron microscopy (TEM), Raman spectroscopy characterization, Raman measurement, X-ray photoelectron spectroscopy (XPS), Brunauer–Emmett–Teller (BET), X-ray photoelectron spectroscopy (XPS), UV–Vis diffuse reflectance and Photoluminescence (PL) spectra have been used to investigate the effects of specific surface areas and oxygen vacancy contents on the photocatalytic properties of mesoporous FTO photocatalysts. The results show that the mesoporous FTO NPs consist of spherical nanoparticles of 3–6 nm in diameters with a tetragonal crystal structure. The as–synthesized mesoporous FTO NPs with the band gap of 3.91 eV, the largest number of oxygen vacancies and the largest surface area of 145.55 m2 g−1 exhibit an excellent photocatalytic activity when degrading methyl orange (MO) under UV light irradiation, and the degradation of dye methyl orange (MO) can reach 97% within 80 min. Moreover, the superoxide oxide (•O2) is the major active specie, which has played a key role in MO degradation system. The photocatalytic mechanism of FTO photocatalysts has been also proposed.



This work was financially supported by the National Key Research and Development Program of China (2016YFB0303902), National Natural Science Foundation of China (No. 51602278), Natural Science Foundation of Hebei Province (No. E2016203149), the Key Basic Research Project of Hebei Province (No. 17961109D) and Hebei Province Department of Higher Education Science and Technology Plan of Young Talents (No. BJ2018004).

Supplementary material

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Supplementary material 1 (DOCX 216 kb)


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Authors and Affiliations

  1. 1.State Key Laboratory of Metastable Materials Science and Technology, College of Materials Science and EngineeringYanshan UniversityQinhuangdaoChina
  2. 2.Division of Functional Materials and Nano DevicesNingbo Institute of Material Technology and Engineering, Chinese Academy of SciencesNingboChina

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