Facile in-situ synthesis of 2D/3D g-C3N4/Cu2O heterojunction for high-performance photocatalytic dye degradation. (20th January 2020)

• Record Type: Journal Article
• Authors: Si, Ying; Zhang, Xiaoxian; Liang, Tingting; Xu, Xun; Qiu, Lingfang; Li, Ping; Duo, Shuwang
• Is Part Of: Materials research express. Volume 7:Number 1(2020)
• Publication Date: 2020-01-20
• Subjects: g-C3N4 nanosheets -- Cu2O nanospheres -- visible light response -- charge separation -- MO degradation; Materials science -- Research -- Periodicals; Materials science -- Periodicals; 620.11
• DOI: 10.1088/2053-1591/ab6893
• Languages: English
• ISSNs: 2053-1591

Abstract

Abstract: Constructing heterojunction is a promising method to enhance visible-light utility and promote photogenerated e − -h + pairs separation of g-C3 N4 . Herein, the present work reported a g-C3 N4 /Cu2 O heterojunction by a facile in situ synthetic strategy. The structure, morphology, optical, electrochemical and photocatalytic properties were investigated. The results showed the combination of g-C3 N4 nanosheets and Cu2 O nanospheres resulted in the close contact interface and wide visible-light response range, and fast separation of the photo-generated e − -h + pairs. The pristine g-C3 N4 showed weak photocatalytic performance towards methyl orange (MO) under visible-light irradiation, compared with pristine g-C3 N4, the photocatalytic degradation rate of optimized g-C3 N4 /Cu2 O composite demonstrates the substantially enhanced photocatalytic activity, which showed no obvious loss after five repeated use. The enhanced performance was ascribed to the synergistic effect of good visible-light harvesting and enhanced separation rate of the charge carriers.