A smart cyto-compatible asymmetric polypyrrole membrane for salinity power generation

Yu, Changchun; Zhu, Xuanbo; Wang, Caiyun; Zhou, Yahong; Jia, Xiaoteng; Jiang, Lei; Liu, Xiao; Wallace, Gordon G.

doi:10.1016/j.nanoen.2018.08.073

Cited by 57 publications

(37 citation statements)

References 56 publications

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“…The combination of strong dimension confinement and surface charge effect contributes to some unique characters, including ion selectivity, ion rectification, and ion gating . Based on these properties, artificial nanochannels have been utilized in energy conversion and water desalination for technological breakthroughs . For instance, a nanofluidic device using ultrathin free‐standing carbon nitride membrane has been successfully developed for manipulating ion transport and salinity‐gradient energy conversion .…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Bio‐Inspired 2D MOFs/PAA Hybrid Membrane for Asymmetric Ion Transport

Wang

Liu

Tan

et al. 2019

Adv Funct Materials

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Biological ion channels are known as membrane proteins which can turn on and off under environmental stimulus to regulate ion transport and energy conversion. Rapid progress made in biological ion channels provides inspiration for developing artificial nanochannels to mimic the structures and functions of ion transport systems and energy conversion in biological ion channels. Due to the advantages of abundant pore channels, metal–organic frameworks (MOFs) have become competitive materials to control the nanofluidic transport. Herein, a facile in situ synthesis method is developed to prepare hybrid nanochannels constructed by 2D MOFs and porous anodic aluminum (PAA). The introduction of asymmetries in the chemical composition and surface charge properties gives the hybrid outstanding ion current rectification properties and excellent ion selectivity. A power density of 1.6 W m−2 is achieved by integrating it into a salinity‐gradient‐driven device. With advantages of facile fabrication method and high ion selectivity, the prepared 2D MOFs/PAA hybrid membrane offers a promising candidate for power conversion and water desalination.

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Section: Introductionmentioning

confidence: 99%

Fabrication of Bio‐Inspired 2D MOFs/PAA Hybrid Membrane for Asymmetric Ion Transport

Wang

Liu

Tan

et al. 2019

Adv Funct Materials

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“…38 For example, free-standing, conducting polymeric films have been investigated as promising electrodes for energy storage. [39][40][41][42][43][44] However, conventional processes to obtain such films require steps including synthesis and isolation of polymers, mixing with additives and binders, compressing or coating into films, etc. These multi-step operations could lead to problems such as structural collapse of porous films and detachment of additives from electrodes during long-term usage, jeopardizing energy delivery and life-span.…”

Section: Introductionmentioning

confidence: 99%

Interfacial growth of free-standing PANI films: toward high-performance all-polymer supercapacitors

Zhong

et al. 2021

Chem. Sci.

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“…So far, inorganic composite, organic materials, soft matter hydrogel, [ 16 ] wood, [ 17 ] silk, [ 18,19 ] etc. [ 20–25 ] have been used to harness salinity gradient energy and have made a giant leap for the applications. Advanced polymers, especially functional ionomers, hold great potential in nanofluid devices because of their unique ion selectivity, uniform 3D pore structure, and physical mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Polymeric Nano‐Blue‐Energy Generator Based on Anion‐Selective Ionomers with 3D Pores and pH‐Driving Gating

Zhu

Zhong

Hao

et al. 2020

Advanced Energy Materials

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Though decades have passed, the nanofluidic system that determines the RED approach process raises fundamental issues about the impact of surface charge on ionic transmembrane property. [5-8] Developments in nanomanufacturing have triggered technological revolutions in nanoporous membrane design and fabrication. [4,9-15] Selecting porous membranes is of the essence for the design of said energy devices. So far, inorganic composite, organic materials, soft matter hydrogel, [16] wood, [17] silk, [18,19] etc. [20-25] have been used to harness salinity gradient energy and have made a giant leap for the applications. Advanced polymers, especially functional ionomers, hold great potential in nanofluid devices because of their unique ion selectivity, uniform 3D pore structure, and physical mechanical properties. [26-28] Ionomers with available chemical diversity could self-assemble into 3D pores by intermolecular phase separation, which bear hydrophilic functional ionic pendants and hydrophobic backbone. [26-29] For decades, ionomers are extensively used as solid electrolytes in electrochemical technologies, especially serving as the Blue energy as a renewable, substantial energy resource has attracted scientists who are interested in discovering abundant membrane materials to achieve high power density. For decades, ionomers have been used as ion-exchange membrane to harvest this energy. Though extensive studies have been conducted, the underlying mechanism of ionic transmembrane behavior is still under debate. Here, the ionic transmembrane properties through membranes with 3D pores prepared by ionomers (polyphenylsulphone with pyridine pendants (PPSU-Py)) are systematically studied. A series of PPSU-Py with tunable porosities and surface charge densities is obtained simply by adjusting the percentages of the pendant. Nanoscale morphologies of the ionomers are simulated with the dissipative particle dynamic method, which is in agreement with the experimental data. Then, nanofluidic behaviors of as-prepared porous membranes are studied, which exhibit anion selectivity, pH gating, and modulated transmembrane conductance. Furthermore, a series of salinity gradient power harvesters based on the ionomers are constructed, of which the output power density is improved by tuning the charge density with the maximum output power density that reaches up to 1.44 W m-2. The impact of the ionomer on nanofluidic behavior is systematically discussed, and it is believed this work will shed light on nanofluidic materials and blue energy generator design.

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A smart cyto-compatible asymmetric polypyrrole membrane for salinity power generation

Cited by 57 publications

References 56 publications

Fabrication of Bio‐Inspired 2D MOFs/PAA Hybrid Membrane for Asymmetric Ion Transport

Fabrication of Bio‐Inspired 2D MOFs/PAA Hybrid Membrane for Asymmetric Ion Transport

Interfacial growth of free-standing PANI films: toward high-performance all-polymer supercapacitors

Polymeric Nano‐Blue‐Energy Generator Based on Anion‐Selective Ionomers with 3D Pores and pH‐Driving Gating

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