Open AccessBiotemplate preparation of Bi 2 O 3 nanosheet for enhanced photodegradation of methylene blue
Author(s) -
Yang Jing,
Wang Meiyan,
Zhao Susu,
Liu Yangyang,
Zhang Wei,
Wu Bowen,
Liu Qing
Publication year - 2019
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.2018.5706
Subject(s) - nanosheet , photodegradation , materials science , scanning electron microscope , fourier transform infrared spectroscopy , methylene blue , transmission electron microscopy , nuclear chemistry , analytical chemistry (journal) , chemical engineering , chemistry , nanotechnology , photocatalysis , organic chemistry , catalysis , engineering , composite material
Bi 2 O 3 nanosheet was synthesised using China rose petal as a biotemplate for the photodegradation of methylene blue under xenon lamp irradiation. The samples were characterised by thermogravimetric analysis–differential scanning calorimetric analysis, Fourier‐transform infrared spectroscopy, nitrogen adsorption, X‐ray diffraction, scanning electron microscopy, transmission electron microscopy, and ultraviolet–visible diffuse reflectance spectroscopy. The results revealed that the Bi 2 O 3 nanosheet with pure monoclinic phase was successfully synthesised by replication of the petal template with a thickness of about 100 nm, and showed the absorption thresholds wavelength of 480 nm. Moreover, the Bi 2 O 3 nanosheet exhibited 94.84% degradation efficiency of photodegradation of methylene blue in 180 min, which was much more active than that of the commercial α‐Bi 2 O 3 due to its high specific surface area of 45.7 m 2 g −1 and wide band gap of 3.10 eV.