Efficient synthesis of polymeric g-C3N4 layered materials as novel efficient visible light driven photocatalysts

Fan Dong, Liwen Wu, Yanjuan Sun, Min Fu, Zhongbiao Wu, S. C. Lee

Research output: Journal article publicationJournal articleAcademic researchpeer-review

768 Citations (Scopus)

Abstract

In order to develop efficient visible light driven photocatalysts for environmental applications, novel polymeric g-C3N4 layered materials with high surface areas are synthesized efficiently from an oxygen-containing precursor by directly treating urea in air between 450 and 600 °C, without the assistance of a template for the first time. The as-prepared g-C3N4 materials with strong visible light absorption have a band gap around 2.7 eV. The crystallinity and specific surface areas of g-C3N4 increases simultaneously when the heating temperatures increases. The g-C3N4 materials are demonstrated to exhibit much higher visible light photocatalytic activity than that of C-doped TiO2 and g-C3N4 prepared from dicyanamide for the degradation of aqueous RhB. The large surface areas, layered structure and band structure in all contributed to the efficient visible light photocatalytic activity. The efficient synthesis method for g-C 3N4 combined with efficient photocatalytic activity is of significant interest for environmental pollutants degradation and solar energy conversion in large scale applications.

Original languageEnglish
Pages (from-to)15171-15174
Number of pages4
JournalJournal of Materials Chemistry
Volume21
Issue number39
DOIs
Publication statusPublished - 21 Oct 2011

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Chemistry

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