Open AccessSynthesis of ω‐Bi 2 O 3 micropyramids with excellent photocatalytic properties
Author(s) -
Xu Zezhong,
Han Chengliang,
Xie Jinsong
Publication year - 2020
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2019.0330
Subject(s) - photocatalysis , triclinic crystal system , bismuth , methyl orange , tartrate , band gap , materials science , hydrothermal circulation , oxide , pyramid (geometry) , crystal structure , crystal growth , visible spectrum , nuclear chemistry , crystallography , chemical engineering , inorganic chemistry , chemistry , catalysis , organic chemistry , optoelectronics , optics , metallurgy , physics , engineering
Novel triclinic bismuth oxide (ω‐Bi 2 O 3 ) microcrystals with a pyramid‐like shape were successfully synthesised by a facile hydrothermal method. The effects of potassium sodium tartrate (KNaC 4 H 4 O 6 ·4H 2 O) concentration and the reaction time on the morphology were investigated, respectively. The experimental results showed that the tartrate (C 4 H 4 O 6 2– ) ions were responsible for the crystal growth of pyramid‐like ω‐Bi 2 O 3 at the same reaction time. The photocatalytic activity of ω‐Bi 2 O 3 pyramids was evaluated by degrading methyl orange under the visible‐light irradiation, revealing the ω‐Bi 2 O 3 pyramids exhibited outstanding photocatalytic activity due to its suitable bandgap energy.