Fe-doped TiO2/Kaolinite as an Antibacterial Photocatalyst under Visible Light Irradiation

被引：4
作者：
Aritonang, A. B. [1 ]
Pratiwi, E. [1 ]
Warsidah, W. [2 ]
Nurdiansyah, S., I [2 ]
Risko, R. [2 ]
机构：
[1] Tanjungpura Univ, Fac Math & Nat Sci, Dept Chem, Pontianak 78124, Indonesia
[2] Tanjungpura Univ, Fac Math & Nat Sci, Dept Marine, Pontianak 78124, Indonesia
来源：
BULLETIN OF CHEMICAL REACTION ENGINEERING AND CATALYSIS | 2021年 / 16卷 / 02期
关键词：
Fe-doped TiO2/kaolinite; photocatalyst; visible light; antibacterial; Escherichia coli; TIO2; NANOPARTICLES; OPTICAL-DENSITY; PURE; COMPOSITE; FILMS;
D O I：
10.9767/bcrec.16.2.10325.293-301
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
In this work, undoped and Fe-doped TiO2 immobilized on kaolinite surface was successfully synthesized by sol-gel method with various Fe concentrations (0.05, 0.125, and 0.25 wt%). The effects of Fe doping into TiO2 lattice were thoroughly investigated by a diffuse reflectance UV-visible (DRS) spectroscopy, Fourier Transform Infrared (FTIR) spectroscopy, and X-ray diffraction (XRD). The optical band gap of undoped and Fe-doped TiO2/kaolinite is red shifted with respect to the incorporation of Fe3+ into the structure of TiO2 resulted band gap. The FTIR spectra shows a shift of peak at the wave number at 586 cm(-1) and 774 cm(-1) which is attribute of the Fe-O vibration as an indication of the formation of Fe-TiO2 bonds. Incorporation of Fe3+ cation into the TiO2 lattice replacing the Ti4+ ions, which induced a perturbation in anatase crystal structure, causes the change in the distance spacing of the crystal lattices dhkl (101) of 8.9632 to 7.9413. The enhanced photocatalytic performance was observed for Fe-doped TiO2/kaolinite compared with TiO2/kaolinite with respect to Escherichia coli growth inhibition in solution media under visible light irradiation. Copyright (C) 2021 by Authors, Published by BCREC Group.
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页码：293 / 301
页数：9
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