In situ loading of CuS nanoflowers on rutile TiO 2 surface and their improved photocatalytic performance

Y. Y. Lu, Y. Y. Zhang, J. Zhang, Y. Shi, Z. Li, Z. C. Feng, C. Li

Research output: Contribution to journalArticlepeer-review

98 Scopus citations

Abstract

CuS nanoflowers, fabricated by an element-direct-reaction route using copper and sulfur powder, were loaded on rutile TiO 2 (CuS/TiO 2 ) at low temperature. CuS/TiO 2 composites were utilized as the photocatalysts for the degradation of Methylene Blue (MB) and 4-chlorophenol (4-CP). X-ray diffraction (XRD), UV Raman spectroscopy, transmission electron microscopy (TEM), XPS, and UV-visible diffuse reflectance spectra were used to characterize the crystalline phase, morphology, particle size, and the optical properties of CuS/TiO 2 samples. It is found that CuS/TiO 2 photocatalyst, which CuS are loaded on the surface of rutile TiO 2 , exhibited enhanced photocatalytic degradation of MB (or 4-CP) than TiO 2 or CuS. This indicates that CuS can enhance effectively the photocatalytic activity of rutile TiO 2 by forming heterojunction between CuS and rutile TiO 2 , which is confirmed by photoluminescence (PL) spectra and TEM. Moreover, CuS content has a significant influence on photocatalytic activity and 2 wt% CuS/TiO 2 showed the maximum photocatalytic activity for degradation of MB.

Original languageEnglish
Pages (from-to)312-319
Number of pages8
JournalApplied Surface Science
Volume370
DOIs
StatePublished - 1 May 2016
Externally publishedYes

Keywords

  • 4-Chlorophenol
  • CuS
  • Heterojunction
  • Methylene Blue
  • Photocatalysis
  • TiO

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