Heterogeneous Electrospinning Nanofiber Membranes with pH-regulated Ion Gating for Tunable Osmotic Power Harvesting

Haoyang Ling; Weiwen Xin; Yongchao Qian; Xiaofeng He; Linsen Yang; Weipeng Chen; Yadong Wu; Huaqing Du; Yang Liu; Xiang-Yu Kong; Lei Jiang; Liping Wen

doi:10.1002/anie.202212120

Heterogeneous Electrospinning Nanofiber Membranes with pH-regulated Ion Gating for Tunable Osmotic Power Harvesting

Angew Chem Int Ed Engl. 2023 Jan 2;62(1):e202212120. doi: 10.1002/anie.202212120. Epub 2022 Nov 29.

Authors

Haoyang Ling^{1

2}, Weiwen Xin^{1

2}, Yongchao Qian^{1

3}, Xiaofeng He¹, Linsen Yang¹, Weipeng Chen¹, Yadong Wu^{1

2}, Huaqing Du^{1

2}, Yang Liu^{1

2}, Xiang-Yu Kong^{1

2}, Lei Jiang^{1

2}, Liping Wen^{1

2}

Affiliations

¹ CAS Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China.
² School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China.
³ Shaanxi Key Laboratory of Macromolecular Science and Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, P. R. China.

PMID: 36329000
DOI: 10.1002/anie.202212120

Abstract

Biological ion channels existing in organisms are critical for many biological processes. Inspired by biological ion channels, the heterogeneous electrospinning nanofiber membranes (HENM) with functional ion channels are constructed by electrospinning technology. The HENM successfully realizes ion-gating effects, which can be used for tunable energy conversions. Introduction of pyridine and carboxylic acid groups into the HENM plays an important role in generating unique and stable ion transport behaviors, in which gates become alternative states of open and close, responding to symmetric/asymmetric pH stimulations. Then we used the HENM to convert osmotic energy into electric energy which reach a maximum value up to 12.34 W m^-2 and the output power density of HENM-based system could be regulated by ion-gating effects. The properties of the HENM provide widespread potentials in application of smart nanofluidic devices, energy conversion, and water treatment.

Keywords: Electrospinning; Heterogeneous Nanofiber Membrane; Ion Gating; Osmotic Energy Harvesting; Tunable Energy Conversion.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Hydrogen-Ion Concentration
Ion Channels / chemistry
Ion Transport
Nanofibers*
Nanotechnology

Substances

Ion Channels