Modulating ion current rectification generating high energy output in a single glass conical nanopore channel by concentration gradient

作     者：Li-Xiang Zhang Yu-Bin Zheng Sheng-Lin Cai Xiao-Hong Cao Yao-Qun Li 

作者机构：Department of Chemistry and the MOE Key Laboratory of Spectrochemical Analysis & InstrumentationCollege of Chemistry and Chemical Engineering.Xiamen University Shenzhen Haibin Pharmaceutical Co.Ltd. 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2015年第26卷第1期

页      面：43-46页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070305[理学-高分子化学与物理] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：financial support from the National Natural Science Foundation of China(Nos.21375111,21127005,20975084) the Ph.D.Programs Foundation of the Ministry of Education of China(No.20110121110011) 

主　　题：Glass conical nanopore channe Ion current rectification Concentration gradient Energy generation 

摘      要：Inspired by biological systems that have the inherent skill to generate considerable bioelectricity from the salt content in fluids with highly selective ion channels and pumps on cell membranes, herein, a fully abiotic, single glass conical nanopores energy-harvesting is demonstrated. Ion current rectification （ICR） in negatively charged glass conical nanopores is shown to be controlled by the electrolyte concentration gradient depending on the direction of ion diffusion. The degree of ICR is enhanced with the increasing forward concentration difference. An unusual rectification inversion is observed when the concentration gradient is reversely applied. The maximum power output with the individual nanopore approaches 10^4pW. This facile and cost-efficient energy-harvesting system has the potential to power tiny biomedical devices or construct future clean-energy recovery plants.