Fabrication of g-C<inf>3</inf>N<inf>4</inf>and a promising charcoal property towards enhanced chromium(VI) reduction and wastewater treatment under visible light

• Main Authors: Suphatchaya Lamkhao, Gobwute Rujijanagul, Chamnan Randorn
• Format: Journal
• Published: 2018
• Online Access: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85033380459&origin=inward; http://cmuir.cmu.ac.th/jspui/handle/6653943832/43838
• Institution: Chiang Mai University

© 2017 Elsevier Ltd The visible light driven photoactivity of g-C 3 N 4 can be enhanced using charcoal as a supporter. Charcoal/g-C 3 N 4 composite materials were prepared by the simultaneous thermal condensation of melamine and charcoal. The effect of different atmospheres (O 2 , air, and argon) on the reaction was investigated. The effect of different weight ratios of charcoal to melamine (1:1 and 1:4 wt%) was also investigated. The physical properties of the charcoal/g-C 3 N 4 materials were analyzed using XRD, SEM, TEM, XPS, BET and FTIR techniques. It was found that an oxidation reaction of charcoal and g-C 3 N 4 during preparation greatly affected the photoactivity. A composite of charcoal:melamine (1:4 wt%) prepared under an air atmosphere provided good photooxidation of methylene blue; whereas a composite of charcoal:melamine (1:4 wt%) prepared under an oxygen atmosphere exhibited good photoreduction of chromium (VI).