Open AccessPhotocatalytic reduction and oxidation activities of nanosheet‐assembled anatase TiO 2 microspheres
Author(s) -
Liu Hui,
Liu Tingting,
Dong Xiaonan,
Zhu Zhenfeng
Publication year - 2015
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.2015.0119
Subject(s) - photocatalysis , anatase , nanosheet , methyl orange , rhodamine b , materials science , x ray photoelectron spectroscopy , titanium dioxide , scanning electron microscope , titanium , nuclear chemistry , chemical engineering , nanotechnology , catalysis , chemistry , organic chemistry , metallurgy , composite material , engineering
Nanosheet‐assembled anatase titanium dioxide (TiO 2 ) microspheres (ST) have been successfully synthesised using the hydrothermal method. The physical and chemical properties of ST were well characterised by X‐ray diffraction, X‐ray photoelectron spectroscopy, field emission scanning electron microscopy, transmission electron microscopy, photoluminescence and Brunauer‐Emmett‐Teller (BET) analysis. The photocatalytic reduction and oxidation activities of the as‐prepared sample were evaluated by removing heavy metal Cr (VI) and by degradation of organic dyes (methyl orange (MO) and rhodamine B (Rh B)), respectively. P25 and commercial pure anatase TiO 2 were used for comparison. The nanosheet‐assembled anatase TiO 2 microspheres displayed better photocatalytic efficiency towards the photo‐reductive conversion of Cr (VI). Moreover, it also exhibited higher photocatalytic activity for the degradation of organic dyes compared with that of P25 and commercial pure anatase TiO 2 .