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Morphology‐Induced TiO 2 Bandgap Change for Super Rapid Treatment of Dye Wastewater under Visible Light
Author(s) -
Qu Ruixiang,
Liu Na,
Chen Yuning,
Zhang Weifeng,
Zhu Guoxiang,
Zhang Qingdong,
Feng Lin
Publication year - 2017
Publication title -
advanced materials technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.184
H-Index - 42
ISSN - 2365-709X
DOI - 10.1002/admt.201700125
Subject(s) - visible spectrum , materials science , photocatalysis , band gap , photoelectric effect , catalysis , wetting , hydrothermal circulation , chemical engineering , nanowire , oxide , degradation (telecommunications) , substrate (aquarium) , nanotechnology , absorption (acoustics) , optoelectronics , composite material , chemistry , organic chemistry , metallurgy , telecommunications , oceanography , geology , computer science , engineering
A novel morphology‐induced TiO 2 nanowire‐based mesh with visible light catalytic ability and super wetting behavior is successfully fabricated by a simple hydrothermal reaction. Combined the special wettability and the excellent photoelectric property of TiO 2 nanowires, such material can realize reusable oil removal and soluble dye molecules degradation under visible light within 30 s. It is believed that the special nanowire morphology reduces the bandgap of TiO 2 from 3.18 to 2.07 eV, and the composite of Cu(OH) 2 substrate provides the material with higher light absorption efficiency, changing the catalytic degradation condition of dye from original UV light to visible light. Such material expands the application of traditional semiconductor oxide, owns outstanding prospect to be used in industrial wastewater treatment and drinking water purification, and provides a brand new method for combining catalytic and environmental chemistry.