Catalysis Letters

, Volume 141, Issue 4, pp 525–530

Photoreduction of Carbon Dioxide Over NaNbO3 Nanostructured Photocatalysts

  • Haifeng Shi
  • Tingzhi Wang
  • Jian Chen
  • Chun Zhu
  • Jinhua Ye
  • Zhigang Zou
Article

DOI: 10.1007/s10562-010-0482-1

Cite this article as:
Shi, H., Wang, T., Chen, J. et al. Catal Lett (2011) 141: 525. doi:10.1007/s10562-010-0482-1

Abstract

NaNbO3 had been successfully developed as a new photocatalyst for CO2 reduction. The catalysts were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and ultraviolet–visible spectroscopy (UV–Vis). The DFT calculations revealed that the top of VB consisted of the hybridized O 2p orbital, while the bottom of CB was constructed by Nb 3d orbital, respectively. In addition, the photocatalytic activities of the NaNbO3 samples for reduction of CO2 into methanol under UV light irradiation were investigated systematically. Compared with the bulk NaNbO3 prepared by a solid state reaction method, the present NaNbO3 nanowires exhibited a much higher photocatalytic activity for CH4 production. This is the first example that CO2 conversion into CH4 proceeded on the semiconductor nanowire photocatalyst.

Graphical Abstract

NaNbO3 had been successfully developed as a new photocatalyst for CO2 reduction. It was noted that NaNbO3 nanowires showed a much higher activity for CH4 production compared with bulk counterpart (SSR NNO).
https://static-content.springer.com/image/art%3A10.1007%2Fs10562-010-0482-1/MediaObjects/10562_2010_482_Figa_HTML.gif

Keywords

NaNbO3PhotocatalyticCO2 reductionNanowires

Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Haifeng Shi
    • 1
    • 2
    • 3
  • Tingzhi Wang
    • 1
  • Jian Chen
    • 1
  • Chun Zhu
    • 1
  • Jinhua Ye
    • 3
  • Zhigang Zou
    • 2
  1. 1.School of ScienceJiangnan UniversityWuxiPeople’s Republic of China
  2. 2.Department of Physics, Eco-Materials and Renewable Energy Research Center (ERERC)Nanjing UniversityNanjingPeople’s Republic of China
  3. 3.Photocatalytic Materials Center (PCMC)National Institute for Materials Science (NIMS) 1-2-1TsukubaJapan