文献类型：期刊文献

英文题名：Nanofluidic sensing inspired by the anomalous water dynamics in electrical angstrom-scale channels

作者：Chu, Tianshu[1,2,3];Zhou, Ze[1,2,3];Tian, Pengfei[1,2,3];Yu, Tingting[4];Lian, Cheng[4,5];Zhang, Bowei[1,2,3];Xuan, Fu-Zhen[1,2,3]

机构：[1]Shanghai Key Lab Intelligent Sensing & Detect Tech, Shanghai, Peoples R China;[2]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai, Peoples R China;[3]East China Univ Sci & Technol, Key Lab Pressure Syst & Safety, Minist Educ, Shanghai, Peoples R China;[4]East China Univ Sci & Technol, Shanghai Engn Res Ctr Hierarch Nanomat, Sch Chem Engn, State Key Lab Chem Engn, Shanghai, Peoples R China;[5]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai, Peoples R China

年份：2024

卷号：15

期号：1

外文期刊名：NATURE COMMUNICATIONS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001304522300026)】；

基金：B.Z. acknowledges the National Natural Science Foundation of China (No.52105145, No.12274124), the Shanghai Pilot Program for Basic Research (No.22TQ1400100-6), and the Fundamental Research Funds for the Central Universities. F.-Z.X. thanks the Science Fund for Creative Research Groups of the National Natural Science Foundation of China (No.52321002). The authors thank Prof. Rahul R. Nair at the University of Manchester for the helpful discussion. Thank Dr. Yanyan Jia and Prof. Sheng Dai at the Feringa Nobel Prize Scientist Joint Research Center of East China University of Science and Technology for the support on TEM characterization.

语种：英文

摘要：Manipulation of confined water dynamics by voltage keeps great importance for diverse applications. However, limitations on the membrane functions, voltage-control range, and unclear dynamics need to be addressed. Herein, we report an anomalous electrically controlled gating phenomenon on cation-intercalated multi-layer Ti3C2 membranes and reveal the confined water dynamics. The water permeation rate was improved rapidly following the application and rise of voltage and finally reached a maximum rate at 0.9 V. The permeation rate starts to decrease from 0.9 V. Below 0.9 V, the electric field affects the charge and polarity of water molecules and then leads to ordered and denser rearrangement in the two-dimensional (2D) channel to accelerate the permeation rate. Above 0.9 V, with the assistance of metal cations, the surge in current induced aggregation of water molecules into clusters, thereby limiting the water mobility. Based on these findings, a high-performance humidity sensor was developed by simultaneously optimizing the response and recovery speeds through electric manipulation. This work provides flexible strategies in intelligent membrane design and nanofluidic sensing. Nanoconfined water has unique properties, often leading to the discovery of unexpected phenomena, which play key roles in applications such as sensing, filtration, and catalysis. Here authors report electrically controlled gating in cation (K+/Li+) intercalated multilayer Ti3C2 and describe anomalous water dynamics in electrical angstrom-scale channels.