Enhanced nanoparticle rejection in aligned boron nitride nanotube membranes

Abstract

<p>The rejection of particles with different charges and sizes, ranging from a few Ångstrom to tens of nanometers, is key to a wide range of industrial applications, from wastewater treatment...</p>

Untangling the physics of water transport in boron nitride nanotubes

“…synthesis. In our experiments, 13 where the nanotubes are synthesised using chemical vapour deposition, the membrane edge into the nanotube in one continuous sheet, with some defects arising at the pore. These defects would likely bind to funcgroups or other nearby atoms to smoothen the electric field the pore ends, but this smoothening needs to be done explicitly in MD.…”

“…In this section, we compare the flow resistances between MD and our recent water transport experiments in CNT 36 and BNNT 13 membranes. All the BNNT membranes studied had a thickness of 50 µm.…”

“…Data from the experimental membranes have been scaled to reflect the resistance of a single nanotube. 13,36 Comparisons are made with MD simulations of the smallest diameters and the no slip HP equation. All membranes considered have been scaled to 50 µm.…”

“…12 Recently, we have synthesized BNNT membranes and shown that they offer advantages of similar selectivity as CNTs but for larger nanotube diameters, which leads to a higher net water permeation. 13 Siria et al 14 also find advantages of using BNNTs for energy conversion due to the presence of surface charges inside the nanotube. The literature on water flows through BNNT membranes, however, appears to contain contradictions, especially when BNNTs are compared to CNTs.…”

Highly Efficient Osmotic Energy Harvesting in Charged Boron‐Nitride‐Nanopore Membranes

“…The schematic in Figure a gives an overview of the oxide‐assisted low‐pressure chemical vapor deposition (CVD) process used for the fabrication of the VA‐BNNP membrane. [ 10 ] Solid ammoniaborane complex (NH 3 BH 3 ) was used as a precursor for the h‐BN deposition. [ 9a ] In the reaction chamber, NH 3 BH 3 thermally decomposes into amino borane (BH 2 NH 2 ) and borazine ((HBNH) 3 ), [ 9b ] which further dissociates to form boron and nitrogen radicals.…”