Projects per year
Abstract
The independent effect of nanotube surface chemistry and structure on the flow of water under nanoscale confinement is demonstrated in this paper for the first time via the synthesis of novel carbon nitride nanotube (CNNT) membranes. Using a combination of experiments and high-fidelity molecular dynamics (MD) simulations, it is shown here that the hydrophilization of the sp 2 carbon structure, induced by the presence of the C-N bonds, decreases the pure water permeance in CNNTs when compared with pristine and turbostratic carbon nanotubes (CNTs). The MD simulations are based on a model true to the chemical structure of the synthesized nanotubes, built from spectroscopy measurements and calibrated potentials using droplet experiments. The effect on permeance is explained in terms of solid-liquid interactions at the nanotube wall with increased water viscosity and decreased surface diffusion near the CNNT wall, when compared to CNTs. A model directly linking the solid-liquid interactions to the water permeance is presented, showing good agreement with both experiments and MD simulations. This work opens the way to tailoring surface chemistry and structure inside nanotube membranes for a wide range of transport and separation processes.
Original language | English |
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Pages (from-to) | 1689-1698 |
Number of pages | 10 |
Journal | ACS Applied Materials and Interfaces |
Volume | 11 |
Issue number | 1 |
Early online date | 13 Dec 2018 |
DOIs | |
Publication status | Published - 9 Jan 2019 |
Keywords
- anodic alumina membrane
- carbon nitride nanotubes
- chemical vapor deposition
- molecular dynamics
- permeance
- ultrafiltration
ASJC Scopus subject areas
- General Materials Science
Fingerprint
Dive into the research topics of 'Surface-controlled water flow in nanotube membranes'. Together they form a unique fingerprint.Projects
- 1 Finished
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SynFabFun - From Membrane Material Synthesis to Fabrication and Function
Mattia, D. (PI) & Chew, J. (CoI)
Engineering and Physical Sciences Research Council
1/04/15 → 30/06/21
Project: Research council
Profiles
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John Chew
- Department of Chemical Engineering - Head of Department
- Water Innovation and Research Centre (WIRC)
- Centre for Digital, Manufacturing & Design (dMaDe)
- IAAPS: Propulsion and Mobility
Person: Research & Teaching, Core staff, Affiliate staff
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Davide Mattia
- Department of Chemical Engineering - Professor
- Institute of Sustainability and Climate Change
- Centre for Integrated Materials, Processes & Structures (IMPS)
Person: Research & Teaching, Core staff, Affiliate staff
Datasets
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Dataset for "Surface-Controlled Water Flow in Nanotube Membranes"
Casanova, S. (Creator), Borg, M. (Creator), Chew, J. (Creator) & Mattia, D. (Creator), University of Bath, 6 Mar 2019
DOI: 10.15125/BATH-00613, https://pubs.acs.org/doi/suppl/10.1021/acsami.8b18532/suppl_file/am8b18532_si_001.pdf
Dataset
Equipment
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High Performance Computing (HPC) Facility
Chapman, S. (Manager)
University of BathFacility/equipment: Facility
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Raman confocal microscope RENISHAM INVIA
Material and Chemical Characterisation (MC2)Facility/equipment: Equipment