Photocatalytic reduction and oxidation activities of nanosheet‐assembled anatase TiO 2  microspheres | Zendy

Liu Hui | Zendy; Liu Tingting | Zendy; Dong Xiaonan | Zendy; Zhu Zhenfeng | Zendy

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Photocatalytic 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) - nanosheet , photocatalysis , anatase , microsphere , materials science , chemical engineering , reduction (mathematics) , catalysis , nanotechnology , chemistry , organic chemistry , engineering , geometry , mathematics

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 .

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