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Ion Gating: Light‐Gating Titania/Alumina Heterogeneous Nanochannels with Regulatable Ion Rectification Characteristic (Adv. Funct. Mater. 4/2014)
Author(s) -
Zhang Qianqian,
Hu Ziying,
Liu Zhaoyue,
Zhai Jin,
Jiang Lei
Publication year - 2014
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201470020
Subject(s) - materials science , rectification , gating , anatase , wetting , ion , photocatalysis , superhydrophilicity , coating , nanotechnology , layer (electronics) , molecule , porosity , chemical engineering , biophysics , catalysis , composite material , organic chemistry , chemistry , power (physics) , physics , biology , quantum mechanics , engineering
Artificial heterogeneous nanochannels with lightresponsive ion transport properties are demonstrated by Z. Liu, J. Zhai, and co‐workers on page 424. Their fabrication includes coating an anatase TiO 2 porous layer onto an alumina porous supporter, followed by chemical modification with octadecyltrimethoxysilane (OTS) molecules. The decomposition of OTS molecules by TiO 2 photocatalysis under UV light contributes to a change of surface wettability and an asymmetric distribution of surface negative charges, which realize the ion gating and regulatable ion rectification characteristics simultaneously.