Open AccessFabrication and Photocatalytic Performance of CQDs/Co-g-C3N4 Heterojunction
Author(s) -
Lingfang Qiu,
Zhiwei Zhou,
Xiaobin Qiu,
Mengfan Ma,
Ping Li,
Shuwang Duo
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/774/1/012038
Subject(s) - photocatalysis , hydrothermal circulation , materials science , photodegradation , heterojunction , crystal (programming language) , fabrication , visible spectrum , adsorption , phase (matter) , specific surface area , nuclear chemistry , chemical engineering , optoelectronics , catalysis , chemistry , organic chemistry , medicine , alternative medicine , pathology , computer science , engineering , programming language
A novel heterojunction photocatalyst by loading CQDs on Co-g-C 3 N 4 was synthesized by simple hydrothermal process successfully. The crystal phase, surface chemical component and optical properties of CQDs/Co-g-C 3 N 4 , Co-g-C 3 N 4 and g-C 3 N 4 were analyzed based on characterizations such as XRD, FT-IR, DRS and PL. The effect of CQDs loading ratio on the properties and photocatalytic performance of the composites was investigated in detail. The optimized CQDs/Co-g-C 3 N 4 (mass ratio of CQDs and Co-g-C 3 N 4 was 0.12%) showed wide visible light adsorption within the wavelength of 800 nm. Moreover, it showed an improved RhB photodegradation efficiency which was 40.9% and 68.3% higher than the value of Co-g-C 3 N 4 and g-C 3 N 4 , respectively. The higher photocatalytic activity of CQDs/Co-g-C 3 N 4 should be ascribed to the effective separation of photo-induced carriers.