Open AccessFacile fabrication of TiO 2 @TiO 2 transparent free‐standing film for photocatalysis
Author(s) -
Zhang Shanmei,
Hu Yue,
Hu Luyang,
Zhang Yumin,
Zhou Yufeng,
Li Benxia
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.2018.5109
Subject(s) - photocatalysis , materials science , chemical engineering , anatase , scanning electron microscope , mesoporous material , hydrothermal circulation , titanium dioxide , annealing (glass) , porosity , microstructure , nanotechnology , adsorption , fabrication , composite material , chemistry , organic chemistry , engineering , catalysis , medicine , alternative medicine , pathology
A transparent titanium dioxide (TiO 2 )@TiO 2 film with free‐standing structure was synthesised by employing a cellulose paper as the template. By one‐step hydrothermal method and subsequent thermal annealing, the fibre of cellulose paper was changed into porous TiO 2 core layer. The flower‐like micro/nanostructure TiO 2 particle layer was intimately distributed on the porous TiO 2 core layer. The average diameter of the TiO 2 @TiO 2 fibre for the film was 11 μm. The size of spherical granular TiO 2 on the fibre surface was around 330 ± 130 nm. It was noted that the microtopography of fibre surface could be adjusted by tuning the hydrothermal temperature. The scanning electron microscopy and N 2 adsorption–desorption measurement results indicated that the prepared film possessed a large mass of mesopores and macropores. On the basis of the special microstructure, the TiO 2 @TiO 2 film exhibited high photocatalytic activity for methylene blue under ultraviolet irradiation. This work might provide a new insight for preparation of transparent photocatalytic film toward water purification.