title: Simple and facile ultrasound-assisted fabrication of Bi(2)O2CO(3)/g-C(3)N(4) composites with excellent photoactivity.
abstract: Bi2O2CO3/g-C3N4(BOC/CN) composites photocatalyst was fabricated via a facile ultrasonic-assisted method. The crystal structure, morphology, optical and photocatalytic properties of the as-prepared samples were characterized by various analytical techniques. The results indicated that the Bi2O2CO3nanoflakes grew on the surface of the g-C3N4nanosheets, forming closely contacted interfaces between the Bi2O2CO3and the g-C3N4component. BOC/CN composites with 50wt% of g-C3N4showed the optimal photoactivity for the degradation of RhB under visible light, which was approximately 2.2 times higher than that of pure g-C3N4and 7 times of pure Bi2O2CO3, respectively. The enhanced performance of the BOC/CN composites was mainly attributed to a synergistic effect including the accelerated separation and migration of photogenerated charge carriers, demonstrated by Photoluminescence (PL), electrochemical impedance spectra (EIS) and photocurrent density. Finally, a possible photocatalytic mechanism was proposed based on the experimental results. It is expected that such a facile route method could provide new insights into fabricating other g-C3N4-based composite photocatalysts for environmental remediation.
authors.affiliation: State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, PR China.
authors.forename: Yongjin
authors.initials: Y
authors.lastname: Ma
authors.affiliation: State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, PR China.
authors.forename: Yuan
authors.initials: Y
authors.lastname: Bian
authors.affiliation: State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, PR China.
authors.forename: Pengfei
authors.initials: P
authors.lastname: Tan
authors.affiliation: State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, PR China.
authors.forename: Yanyang
authors.initials: Y
authors.lastname: Shang
authors.affiliation: State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, PR China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Liu
authors.affiliation: State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, PR China.
authors.forename: Laidi
authors.initials: L
authors.lastname: Wu
authors.affiliation: State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, PR China.
authors.forename: Anquan
authors.initials: A
authors.lastname: Zhu
authors.affiliation: State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, PR China.
authors.forename: Wenwen
authors.initials: W
authors.lastname: Liu
authors.affiliation: State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, PR China.
authors.forename: Xiang
authors.initials: X
authors.lastname: Xiong
authors.affiliation: State Key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, PR China. Electronic address: jun.pan@csu.edu.cn.
authors.forename: Jun
authors.initials: J
authors.lastname: Pan
keywords: Bi(2)O(2)CO(3)/g-C(3)N(4) composites photocatalyst; Photocurrent density; Photodegradation; Ultrasonic assisted method; Visible light