Boron Nitride Nanoporous Membranes with High Surface Charge by Atomic Layer Deposition
PBN-AR
Instytucja
Centrum Nanobiomedyczne (Uniwersytet im. Adama Mickiewicza w Poznaniu)
Informacje podstawowe
Główny język publikacji
en
Czasopismo
ACS Applied Materials & Interfaces (40pkt w roku publikacji)
ISSN
1944-8244
EISSN
Wydawca
AMER CHEMICAL SOC
DOI
URL
Rok publikacji
2017
Numer zeszytu
19
Strony od-do
16669-16678
Numer tomu
9
Identyfikator DOI
Liczba arkuszy
Słowa kluczowe
en
Anodic oxidation
Atoms
Boron nitride
Deposition
Energy harvesting
Membranes
Molecular dynamics
Nanopores
Nanotechnology
Nitrides
Oxide films
Scalability
Surface charge
Thin films
Anodic aluminum oxide
Experimental conditions
Ionic separations
Ionic transports
Molecular dynamics simulations
Nanoporous membrane
Nanoporous templates
Ultrafiltration devices
Atomic layer deposition
Streszczenia
Język
en
Treść
In this work, we report the design and the fine-tuning of boron nitride single nanopore and nanoporous membranes by atomic layer deposition (ALD). First, we developed an ALD process based on the use of BBr3 and NH3 as precursors in order to synthesize BN thin films. The deposited films were characterized in terms of thickness, composition, and microstructure. Next, we used the newly developed process to grow BN films on anodic aluminum oxide nanoporous templates, demonstrating the conformality benefit of BN prepared by ALD, and its scalability for the manufacturing of membranes. For the first time, the ALD process was then used to tune the diameter of fabricated single transmembrane nanopores by adjusting the BN thickness and to enable studies of the fundamental aspects of ionic transport on a single nanopore. At pH = 7, we estimated a surface charge density of 0.16 C·m-2 without slip and 0.07 C·m-2 considering a reasonable slip length of 3 nm. Molecular dynamics simulations performed with experimental conditions confirmed the conductivities and the sign of surface charges measured. The high ion transport results obtained and the ability to fine-tune nanoporous membranes by such a scalable method pave the way toward applications such as ionic separation, energy harvesting, and ultrafiltration devices. © 2017 American Chemical Society.
Cechy publikacji
Original article
Original article presents the results of original research or experiment.
Oryginalny artykuł naukowy
Oryginalny artykuł naukowy przedstawia rezultaty oryginalnych badań naukowych lub eksperymentu.
Inne
System-identifier
PBN-R:873938
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