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The Y‐TiO 2 /5A/NiFe 2 O 4 Composite for the High‐efficiency Adsorption and Photocatalytic Degradation of Norfloxacin under Visible Light
Author(s) -
Xu Jing,
Ren Zhihao,
Qiu Xiaoyuan,
Zhu Pengfei,
Chen Dandan,
Xie Lisi,
Zhang Chaoli
Publication year - 2021
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.202101559
Subject(s) - photocatalysis , visible spectrum , materials science , x ray photoelectron spectroscopy , heterojunction , hydrothermal circulation , composite number , doping , degradation (telecommunications) , adsorption , chemical engineering , nuclear chemistry , catalysis , optoelectronics , composite material , chemistry , organic chemistry , telecommunications , computer science , engineering
Y‐TiO 2 /5A/NiFe 2 O 4 composite was prepared by hydrothermal and sol‐gel method. The structure, morphology and optical properties of the composite were investigated by XRD, FT‐IR, XPS, SEM, UV‐vis DRS and so on. Compared with 5A, TiO 2 , TiO 2 /5A and Y‐TiO 2 /5A , the photocatalytic properties of Y‐TiO 2 /5A/NiFe 2 O 4 was enhanced and the removal rate of norfloxacin can reach the highest 96.55 % under visible light for 60 min. Moreover, the photocatalyst still has good photocatalytic performance after three cycles of use. This improvement is mainly attributed to two factors. On the one hand, the doping of Y brings impurity level to TiO 2 , which broadens the spectral response range of the photocatalyst to the visible region. On the other hand, NiFe 2 O 4 forms Z‐scheme heterojunction with TiO 2 , which enables the photogenerated carriers to be separated effectively through the interface of heterojunction, thus improving the performance of the photocatalyst. Moreover, the photocatalyst still has a good removal rate for several other antibiotics. Finally, a possible electron transfer mechanism is proposed based on characterization and active species capture experiments.