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Polyaniline for improved blue energy harvesting: highly rectifying nanofluidic diodes operating in hypersaline conditions via one-step functionalization

Laucirica, Gregorio ; Toimil-Molares, María Eugenia ; Trautmann, Christina ; Marmisollé, Waldemar ; Azzaroni, Omar (2020)
Polyaniline for improved blue energy harvesting: highly rectifying nanofluidic diodes operating in hypersaline conditions via one-step functionalization.
In: ACS Applied Materials & Interfaces, 12 (25)
doi: 10.1021/acsami.0c05102
Artikel, Bibliographie

Kurzbeschreibung (Abstract)

Solid-state nanochannels have attracted substantial attention of the scientific community due to their remarkable control of ionic transport and the feasibility to regulate the iontronic output by different stimuli. Most of the developed nanodevices are subjected to complex modification methods or show functional responsiveness only in moderate-ionic-strength solutions. Within this project, we present a nanofluidic device with enhanced ionic current rectification properties attained by a simple one-step functionalization of single bullet-shaped polyethylene terephthalate (PET) nanochannels with polyaniline (PANI) that can work in high-ionic-strength solutions. The integration of PANI also introduces a broad pH sensitivity, which makes it possible to modulate the ionic transport behavior between anion-selective and cation-selective regimes depending on the pH range. Since PANI is an electrochemically active polymer, ionic transport also becomes dependent on the presence of redox stimuli in solution. We demonstrate that PANI-functionalized single-nanochannel membranes function as an efficient salinity gradient-based energy conversion device even in acidic concentrated salt solutions, opening the door to applications under a variety of novel operating conditions.

Typ des Eintrags: Artikel
Erschienen: 2020
Autor(en): Laucirica, Gregorio ; Toimil-Molares, María Eugenia ; Trautmann, Christina ; Marmisollé, Waldemar ; Azzaroni, Omar
Art des Eintrags: Bibliographie
Titel: Polyaniline for improved blue energy harvesting: highly rectifying nanofluidic diodes operating in hypersaline conditions via one-step functionalization
Sprache: Englisch
Publikationsjahr: 24 Juni 2020
Verlag: ACS Publications
Titel der Zeitschrift, Zeitung oder Schriftenreihe: ACS Applied Materials & Interfaces
Jahrgang/Volume einer Zeitschrift: 12
(Heft-)Nummer: 25
DOI: 10.1021/acsami.0c05102
Kurzbeschreibung (Abstract):

Solid-state nanochannels have attracted substantial attention of the scientific community due to their remarkable control of ionic transport and the feasibility to regulate the iontronic output by different stimuli. Most of the developed nanodevices are subjected to complex modification methods or show functional responsiveness only in moderate-ionic-strength solutions. Within this project, we present a nanofluidic device with enhanced ionic current rectification properties attained by a simple one-step functionalization of single bullet-shaped polyethylene terephthalate (PET) nanochannels with polyaniline (PANI) that can work in high-ionic-strength solutions. The integration of PANI also introduces a broad pH sensitivity, which makes it possible to modulate the ionic transport behavior between anion-selective and cation-selective regimes depending on the pH range. Since PANI is an electrochemically active polymer, ionic transport also becomes dependent on the presence of redox stimuli in solution. We demonstrate that PANI-functionalized single-nanochannel membranes function as an efficient salinity gradient-based energy conversion device even in acidic concentrated salt solutions, opening the door to applications under a variety of novel operating conditions.

Freie Schlagworte: nanochannels, polyaniline, nanofluidic diodes, hypersaline compatibility, salinity gradient power, salinity gradient power, osmotic power generation
Fachbereich(e)/-gebiet(e): 11 Fachbereich Material- und Geowissenschaften
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft
11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Ionenstrahlmodifizierte Materialien
Hinterlegungsdatum: 29 Feb 2024 08:06
Letzte Änderung: 29 Feb 2024 08:06
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