Self-assembly synthesis of BiVO4/Polydopamine/g-C3N4 with enhanced visible light photocatalytic performance. (February 2018)

• Record Type: Journal Article
• Authors: Huo, Rui; Yang, Xue-Ling; Yang, Jing-Yu; Yang, Si-Yuan; Xu, Yue-Hua
• Is Part Of: Materials research bulletin. Volume 98(2018)
• Page Start: 225
• Page End: 230
• Publication Date: 2018-02
• Subjects: BiVO4 -- g-C3N4 -- Polydopamine -- Glyphosate -- Photocatalytic; Materials -- Periodicals; Crystal growth -- Periodicals; Matériaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Crystal growth; Materials; Periodicals; 620.11
• DOI: 10.1016/j.materresbull.2017.10.016
• Languages: English
• ISSNs: 0025-5408

Abstract

Graphical abstract: Highlights: BiVO4 /PDA/g-C3 N4 was synthesized via simple self-assembly at the room temperature. PDA has a strong binding affinity to BiVO4 and g-C3 N4 to form BiVO4 /PDA/g-C3 N4 . BiVO4 /PDA/g-C3 N4 exhibits good stability and reusability in the photocatalytic reaction of glyphosate. The enhanced activity of BiVO4 /PDA/g-C3 N4 is mainly attributed to the increased charge separation. Abstract: BiVO4 /PDA(Polydopamine)/g-C3 N4 was synthesized by facile ultrasonic dispersion and self-assembly at the room temperature, and monoclinic BiVO4 was embedded on PDA/g-C3 N4 sheet, which PDA was first formed in situ on the surface of g-C3 N4 via self-polymerization of dopamine. The dependence of photocatalytic activity on the structural, electronic and optical properties of the BiVO4 /PDA/g-C3 N4 nanostructure has been explored using XRD, XPS, TEM, SEM, DRS, PL, BET and photocurrent. The BiVO4 /PDA/g-C3 N4 photocatalysts show higher activity of glyphosate degradation than BiVO4, g-C3 N4 and BiVO4 /g-C3 N4 under visible light irradiation. The enhanced activity of BiVO4 /PDA/g-C3 N4 can be significantly attributed to the improved visible light absorption, enhanced specific surface area and increased charge separation. PDA has a strong and irreversible binding ability onto BiVO4 and g-C3 N4 to form BiVO4 /PDA/g-C3 N4 . This simple method at the room temperature is promising for the synthesis of high performance composite photocatalysts for different applications, such as pollutant degradation, photocatalytic splitting water, etc.