Fabrication of pyrimidine/g-C3N4 nanocomposites for efficient photocatalytic activity under visible-light illumination. (April 2019)

• Record Type: Journal Article
• Authors: Zhuang, Jingguo; Zhang, Jing; Pang, Jingyu; Wang, Aijian; Wang, Xinhai; Zhu, Weihua
• Is Part Of: Dyes and pigments. Volume 163(2019)
• Page Start: 634
• Page End: 640
• Publication Date: 2019-04
• Subjects: g-C3N4 -- Pyrimidine -- Charge transfer -- Photocatalysis; Dyes and dyeing -- Periodicals; Pigments -- Periodicals; 667.2
• DOI: 10.1016/j.dyepig.2018.12.046
• Languages: English
• ISSNs: 0143-7208

Abstract

Abstract: In this work, a series of pyrimidine/g-C3 N4 photocatalysts has been synthesized via a facile solvothermal method for the first time. The structure, elemental composition and morphology of the photocatalysts were characterized by FT-IR, SEM, XPS, N2 adsorption-desorption isotherms and BET characterization methods. The photocatalytic activity of the pyrimidine/g-C3 N4 materials was investigated by the degradation of rhodamine solution under visible-light illumination. The pyrimidine/g-C3 N4 photocatalyst with 1 wt% of pyrimidine shows the highest photocatalytic activity for the degradation of RhB, which can be mainly ascribed to the effective interfacial charge transfer within the pyrimidine/g-C3 N4 photocatalyst and the cooperation effect of the excellent contact interface between g-C3 N4 and pyrimidine. The main active species during the photodegradation process are determined by the radical trapping experiments, proving that the superoxide radical (O2 − ) and the hydroxyl radical (OH) play the main role in the photocatalytic reactions. Highlights: A series of pyrimidine/g-C3 N4 photocatalysts has been synthesized. The content of pyrimidine has a significant effect on the photocatalysis. The enhanced photocatalysis is ascribed to the efficient charge transfer.