中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Photocatalysis-Triggered Ion Rectification in Artificial Nanochannels Based on Chemically Modified Asymmetric TiO2 Nanotubes

文献类型:期刊论文

作者Hu, Ziying1; Zhang, Qianqian1; Gao, Jun2; Liu, Zhaoyue1; Zhai, Jin1; Jiang, Lei1,2
刊名LANGMUIR
出版日期2013-04-16
卷号29期号:15页码:4806-4812
ISSN号0743-7463
DOI10.1021/la400624p
英文摘要Ion rectification is one of the important characteristics of biological ion channels. Inspired by the function of biological ion channels, creation of artificial nanochannels that show analogous ion rectification characteristics has attracted a great interest recently. Herein, we demonstrate a new type of artificial solid-state nanochannel with ion rectification characteristics. The creation of artificial nanochannels includes the formation of asymmetric TiO2 nanotubes by electrochemical anodization of Ti metal, followed by chemical modification with octadecyltrimethoxysilane (OTS) molecules. The carboxylic groups are introduced onto the tip side of TiO2 nanotubes via photocatalytic decomposition of OTS molecules by TiO2 photocatalysis under ultraviolet light. When the radius of tip side of TiO2 nanotubular channels is comparable to the thickness of electric double layer, the negatively charged surface in neutral electrolyte in combination with the asymmetric pore geometry contributes to the ion rectification characteristics. Compared with previous artificial nanochannels, our new type of artificial nanochannel is more facile to fabricate and behaves as a diode that rectifies the ion transport, which also shows some other potential applications, such as sensor and separation materials.
语种英语
WOS记录号WOS:000317813300019
出版者AMER CHEMICAL SOC
源URL[http://ir.iccas.ac.cn/handle/121111/53865]  
专题中国科学院化学研究所
通讯作者Liu, Zhaoyue
作者单位1.Beihang Univ, Key Lab Bioinspired Smart Interfacial Sci & Techn, Minist Educ, Sch Chem & Environm, Beijing 100191, Peoples R China
2.Chinese Acad Sci, BNLMS, Key Lab Organ Solids, Inst Chem, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714
Hu, Ziying,Zhang, Qianqian,Gao, Jun,et al. Photocatalysis-Triggered Ion Rectification in Artificial Nanochannels Based on Chemically Modified Asymmetric TiO2 Nanotubes[J]. LANGMUIR,2013,29(15):4806-4812.
APA Hu, Ziying,Zhang, Qianqian,Gao, Jun,Liu, Zhaoyue,Zhai, Jin,&Jiang, Lei.(2013).Photocatalysis-Triggered Ion Rectification in Artificial Nanochannels Based on Chemically Modified Asymmetric TiO2 Nanotubes.LANGMUIR,29(15),4806-4812.
MLA Hu, Ziying,et al."Photocatalysis-Triggered Ion Rectification in Artificial Nanochannels Based on Chemically Modified Asymmetric TiO2 Nanotubes".LANGMUIR 29.15(2013):4806-4812.

入库方式: OAI收割

来源:化学研究所

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