Ion and Hydrodynamic Translucency in 1D van der Waals Heterostructured Boron-Nitride Single-Walled Carbon Nanotubes
- Rutgers Univ., Piscataway, NJ (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Univ. of Tokyo (Japan)
- Univ. of Tokyo (Japan); Zhejiang Univ., Hangzhou (China)
- Rutgers Univ., Piscataway, NJ (United States)
An unresolved challenge in nanofluidics is tuning ion selectivity and hydrodynamic transport in pores, particularly for those with diameters larger than a nanometer. In contrast to conventional strategies that focus on changing surface functionalization or confinement degree by varying the radial dimension of the pores, we explore a unique approach for manipulating ion selectivity and hydrodynamic flow enhancement by externally coating single-walled carbon nanotubes (SWCNTs) with a few layers of hexagonal boron nitride (h-BN). Here, for van der Waals heterostructured BN-SWCNTs, we observed a 9-fold increase in cation selectivity for K+ versus Cl– compared to pristine SWCNTs of the same 2.2 nm diameter, while hydrodynamic slip lengths decreased by more than an order of magnitude. These results suggest that the single-layer graphene inner surface may be translucent to charge-regulation and hydrodynamic-slip effects arising from h-BN on the outside of the SWCNT. Such 1D heterostructures could serve as synthetic platforms with tunable properties for exploring distinct nanofluidic phenomena and their potential applications.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- Defense Threat Reduction Agency (DTRA); National Science Foundation (NSF); USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC02-05CH11231; AC52-07NA27344
- OSTI ID:
- 2325216
- Report Number(s):
- LLNL--JRNL-861512; 1092628
- Journal Information:
- ACS Nano, Journal Name: ACS Nano Journal Issue: 1 Vol. 18; ISSN 1936-0851
- Publisher:
- American Chemical Society (ACS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Emergence of Interfacial Polarons from Electron–Phonon Coupling in Graphene/h-BN van der Waals Heterostructures
Photon-induced suppression of interlayer tunneling in van der Waals heterostructures
Journal Article
·
Thu Jan 04 19:00:00 EST 2018
· Nano Letters
·
OSTI ID:1461624
Photon-induced suppression of interlayer tunneling in van der Waals heterostructures
Journal Article
·
Sun May 05 20:00:00 EDT 2019
· Physical Review B
·
OSTI ID:1523645