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Ultrasmall Ag species decorated on α‐Fe 2 O 3 nanorods toward high‐efficient photocatalytic degrading tetracycline hydrochloride in water
Author(s) -
Zhou Xiangtong,
Xi Haipeng,
Li Chunmei,
Dong Hongjun,
Wang Xinling,
Zhao Qilu,
Zhang Juan,
Yang Jing
Publication year - 2021
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.202000564
Subject(s) - nanorod , photocatalysis , chemistry , tetracycline hydrochloride , degradation (telecommunications) , reaction rate constant , nuclear chemistry , absorption (acoustics) , chemical engineering , composite number , tetracycline , hydrochloride , nanotechnology , kinetics , catalysis , organic chemistry , materials science , composite material , telecommunications , biochemistry , physics , antibiotics , quantum mechanics , computer science , engineering
The ultrasmall Ag species decorated on α‐Fe 2 O 3 nanorods photocatalysts are prepared through a facile in situ photodeposition process. The obtained Ag/α‐Fe 2 O 3 composite samples display more outstanding photocatalytic activity than original α‐Fe 2 O 3 in the degradation of tetracycline hydrochloride (TC‐HCl) in water. The degradation rate constant of TC‐HCl over the Ag/α‐Fe 2 O 3 ‐5 sample reaches up to 0.0118 min −1 , which is about 6.21 times than that over original α‐Fe 2 O 3 sample (0.0019 min −1 ). The structure characterizations, physicochemical properties, and photoelectrochemical measurements reveal that the visible light absorption ability and charge separation efficiency are improved dramatically owing to the decoration effect of ultrasmall Ag species on the surface of α‐Fe 2 O 3 nanorods. The photocatalytic reaction mechanism investigations demonstrate that holes, ˙O 2 − , and ˙OH all are main active species and play important roles in the degradation process of TC‐HCl.