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3D Carambola‐Like CuO/TiO 2 Nanotube Heterostructures via Low‐Temperature Solution Process for Photocatalytic Activity
Author(s) -
Ren Shuai,
Zhang Jiejing,
Lu Huiqing,
Gao Shiyong,
Li Lin,
Rong Ping,
Zhang Xiaolei,
Liu Yi,
Sang Dandan
Publication year - 2021
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.202100110
Subject(s) - photocatalysis , heterojunction , x ray photoelectron spectroscopy , rhodamine b , chemical engineering , visible spectrum , chemistry , absorption (acoustics) , nanotechnology , nanotube , absorption spectroscopy , photochemistry , materials science , catalysis , composite material , optoelectronics , organic chemistry , optics , carbon nanotube , engineering , physics
CuO/TiO 2 heterostructures have been synthesized via a facile low‐temperature solution method. The resultant heterostructures present a three‐dimensional hierarchical morphology of carambola‐like CuO integrated with TiO 2 nanotubes (NTs), confirmed by means of SEM, TEM, EDS, XRD and XPS. And time‐dependent evolutions of morphology show that the CuO grow from the initial leaf‐shaped nanosheets and eventually form carambola‐like structures. The UV/Vis absorption spectrum indicates that the carambola‐like CuO/TiO 2 NTs have strong absorption in the UV light region as well as in the visible light region. The study on evaluating photocatalytic activity indicates that the carambola‐like CuO/TiO 2 NTs can degrade 40 % of Rhodamine B, exhibiting enhanced photocatalytic activity compared with TiO 2 NTs. Moreover, the photocatalytic mechanism of the carambola‐like CuO/TiO 2 NT heterostructures is expounded.