Open AccessSynthesis and Photocatalytic Activity of Polyhedral BiVO4
Author(s) -
Chen Jian-fei,
Ranbo Yu,
Zumin Wang
Publication year - 2020
Publication title -
materials physics and chemistry
Language(s) - English
Resource type - Journals
ISSN - 2661-412X
DOI - 10.18282/mpc.v1i4.845
Subject(s) - photocatalysis , monoclinic crystal system , calcination , hydrothermal circulation , methylene blue , nuclear chemistry , visible spectrum , materials science , phase (matter) , chemistry , crystallography , mineralogy , catalysis , chemical engineering , crystal structure , organic chemistry , optoelectronics , engineering
Polyhedral BiVO 4 was prepared by hydrothermal-calcination two-step method. The physicochemical properties of polyhedral BiVO 4 were characterized by XRD, TG/DTA, SEM and UV-vis DRS. The photocatalytic properties of the samples were investigated by using 10 mg/L methylene blue (MB) as the target degradant. The experimental results showed that the prepared polyhedral BiVO 4 is monoclinic. The morphology is about 10 μm polyhedral block. The pure phase BiVO 4 has strong visible light absorption capacity. Under visible light irradiation, the prepared BiVO 4 can degrade 90% of MB within 40 min. Moreover, the photocatalytic performance was further improved by forming a BiVO4/BiOCl heterojunction, and the kinetic reaction rate was 1.5 times that of the pure phase BiVO 4
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