title: Light-Induced Ion Rectification in Zigzag Nanochannels.
abstract: Ion transport through nanoporous systems has attracted broad interest due to its crucial role in physiological processes in living organisms and artificial bionic devices. In this work, a nanochannel system with a zigzag inner surface was fabricated by using a two-step anodizing technique. The rectification performance of the zigzag channels was observed by I-V measurement in KCl solution. Unlike channels with asymmetric geometry, the mechanism was analyzed based on the "point effect" of charge distribution and "shape effect" of the zigzag channel. The current rectification ratio decreases from nearly 3.0 to 1.0 when the KCl concentration increased from 0.1 mM to 100 mM. The fabrication of different nanopore systems and exploration of novel mechanisms will help to develop biomimetic membranes for practical applications.
authors.affiliation: School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450002, Henan Province, P.R. China.|International Joint Research Laboratory for Low-Carbon&Environmental Materials of Henan Province, Zhengzhou, 450002, Henan Province, P.R. China.
authors.forename: Chuanshuai
authors.initials: C
authors.lastname: Li
authors.affiliation: School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450002, Henan Province, P.R. China.|International Joint Research Laboratory for Low-Carbon&Environmental Materials of Henan Province, Zhengzhou, 450002, Henan Province, P.R. China.
authors.forename: Shimin
authors.initials: S
authors.lastname: Hu
authors.affiliation: School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450002, Henan Province, P.R. China.|International Joint Research Laboratory for Low-Carbon&Environmental Materials of Henan Province, Zhengzhou, 450002, Henan Province, P.R. China.
authors.forename: Lei
authors.initials: L
authors.lastname: Yang
authors.affiliation: School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450002, Henan Province, P.R. China.|International Joint Research Laboratory for Low-Carbon&Environmental Materials of Henan Province, Zhengzhou, 450002, Henan Province, P.R. China.
authors.forename: Jiajie
authors.initials: J
authors.lastname: Fan
authors.affiliation: School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450002, Henan Province, P.R. China.|International Joint Research Laboratory for Low-Carbon&Environmental Materials of Henan Province, Zhengzhou, 450002, Henan Province, P.R. China.
authors.forename: Zhiqiang
authors.initials: Z
authors.lastname: Yao
authors.affiliation: School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450002, Henan Province, P.R. China.|International Joint Research Laboratory for Low-Carbon&Environmental Materials of Henan Province, Zhengzhou, 450002, Henan Province, P.R. China.
authors.forename: Yiqiang
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: Institute for Renewable Energy and Environmental Technologies, University of Bolton, Bolton, BL3 5AB, UK.
authors.forename: Guosheng
authors.initials: G
authors.lastname: Shao
authors.affiliation: School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450002, Henan Province, P.R. China. Hujh@zzu.edu.cn.|International Joint Research Laboratory for Low-Carbon&Environmental Materials of Henan Province, Zhengzhou, 450002, Henan Province, P.R. China. Hujh@zzu.edu.cn.
authors.forename: Junhua
authors.initials: J
authors.lastname: Hu
mesh_terms: D055664:Electrochemical Techniques; D017136:Ion Transport; D008027:Light; D053768:Metal Nanoparticles / Q000737:chemistry; D058608:Nanopores; D011189:Potassium Chloride / Q000737:chemistry; D014025:Titanium / Q000737:chemistry
chemical_list: C009495:titanium dioxide; D011189:Potassium Chloride; D014025:Titanium
keywords: electrochemistry; ion transport; nanopore systems; photocatalysis; rectification membranes