Urea and melamine formaldehyde resin-derived tubular g-C₃N₄ with highly efficient photocatalytic performance

Xinyu ZHAO, Yi ZHANG, Xia ZHAO, Xin WANG, Yingnan ZHAO, Huaqiao TAN, Haotian ZHU, Wing Kei HO, Huiying SUN, Yangguang LI

Research output: Contribution to journalArticlespeer-review

12 Citations (Scopus)

Abstract

Construction of various nanostructure g-C₃N₄, especially those with a tubular structure, is gaining considerable research interest because of their large specific surface area, high carrier transport efficiency, and excellent mass transfer. In this study, a novel multistage tubular g-C₃N₄ (TCN) has been prepared by the copolymerization of melamine formaldehyde (MF) resin with urea. With the introduction of MF resin, the electrostructure of TCN and its hydrophilicity property have been obviously ameliorated, thereby enhancing its visible-light absorption and improving the interface contact between TCN and water. Moreover, photocurrent response and electrochemical impedance spectra indicate that the special multistage tubular structure facilitates the spatial charge transfer and photogenerated carrier separation. Thus, the as-prepared TCN exhibits excellent photoactivities under visible-light irradiation. Among the samples, TCN-0.1 shows the best performance. Its hydrogen evolution rate is approximately 7505 μmol·g⁻¹·h⁻¹, which is 6.05 times greater than that of g-C₃N₄ (prepared by urea at 600 °C), and its apparent quantum efficiency is nearly 19.2% at 400 nm. In addition, TCN is also endowed with outstanding visible-light performance and durability for the degradation of tetracycline and methyl orange. This work might provide a significant inspiration for the design of new, highly efficient g-C₃N₄-based materials and further deepen our understanding of the preparation of tubular photocatalysts. Copyright © 2019 American Chemical Society.
Original languageEnglish
Pages (from-to)27934-27943
JournalACS Applied Materials and Interfaces
Volume11
Issue number31
Early online dateJul 2019
DOIs
Publication statusPublished - 2019

Citation

Zhao, X., Zhang, Y., Zhao, X., Wang, X., Zhao, Y., Tan, H., . . . Li, Y. (2019). Urea and melamine formaldehyde resin-derived tubular g-C₃N₄ with highly efficient photocatalytic performance. ACS Applied Materials and Interfaces, 11(31), 27934-27943. doi: 10.1021/acsami.9b08483

Keywords

  • Graphitic carbon nitride
  • Melamine formaldehyde (MF) resin
  • Urea
  • Tubular structure
  • Photocatalysis

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