Construction of stable Ta 3 N 5 /g-C 3 N 4 metal/non-metal nitride hybrids with enhanced visible-light photocatalysis

Yinhua Jiang, Peipei Liu, Ye Cheng Chen, Zhengzhong Zhou, Haijian Yang, Yuanzhi Hong, Fan Li, Liang Ni, Yongsheng Yan, Duncan H. Gregory

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43 Citations (Scopus)

Abstract

In this paper, a novel Ta 3 N 5 /g-C 3 N 4 metal/non-metal nitride hybrid was successfully synthesized by a facile impregnation method. The photocatalytic activity of Ta 3 N 5 /g-C 3 N 4 hybrid nitrides was evaluated by the degradation of organic dye rhodamine B (RhB) under visible light irradiation, and the result indicated that all Ta 3 N 5 /g-C 3 N 4 samples exhibited distinctly enhanced photocatalytic activities for the degradation of RhB than pure g-C 3 N 4 . The optimal Ta 3 N 5 /g-C 3 N 4 composite sample, with Ta 3 N 5 mass ratio of 2%, demonstrated the highest photocatalytic activity, and its degradation rate constant was 2.71 times as high as that of pure g-C 3 N 4 . The enhanced photocatalytic activity of this Ta 3 N 5 /g-C 3 N 4 metal/metal-free nitride was predominantly attributed to the synergistic effect which increased visible-light absorption and facilitated the efficient separation of photoinduced electrons and holes. The Ta 3 N 5 /g-C 3 N 4 hybrid nitride exhibited excellent photostability and reusability. The possible mechanism for improved photocatalytic performance was proposed. Overall, this work may provide a facile way to synthesize the highly efficient metal/metal-free hybrid nitride photocatalysts with promising applications in environmental purification and energy conversion.

Original languageEnglish
Pages (from-to)392-403
Number of pages12
JournalApplied Surface Science
Volume391
DOIs
Publication statusPublished - Jan 1 2017

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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    Jiang, Y., Liu, P., Chen, Y. C., Zhou, Z., Yang, H., Hong, Y., Li, F., Ni, L., Yan, Y., & Gregory, D. H. (2017). Construction of stable Ta 3 N 5 /g-C 3 N 4 metal/non-metal nitride hybrids with enhanced visible-light photocatalysis Applied Surface Science, 391, 392-403. https://doi.org/10.1016/j.apsusc.2016.04.094