Boron Nitride Membranes with a Distinct Nanoconfinement Effect for Efficient Ethylene/Ethane Separation

Abstract

AB Nm embrane with ad istinct nanoconfinement effect toward efficient ethylene/ethane separation is presented. The horizontal and inclined self-assembly of 2D BN nanosheets endowt he BN membrane with abundant percolating nanochannels,a nd these nanochannels are further decorated by reactive ionic liquids (RILs) to tailor their sizes as well as to achieve nanoconfinement effect. The noncovalent interactions between RIL and BN nanosheets favor the ordered alignment of the cations and anions of RIL within BN nanochannels, which contributes to afast and selective ethylene transport. The resultant membranes exhibit an unprecedented separation performance with superhigh C 2 H 4 permeance of 138 GPU and C 2 H 4 /C 2 H 6 selectivity of 128 as well as remarkably improved long-term stability for 180 h, outperforming reported state-of-the-art membranes.

2D Materials for All‐Solid‐State Lithium Batteries

“…It also used to suppress side reactions, improving the interfacial contact between the electrode and electrolyte. [87][88][89] As the core of energy materials, porous materials are under constant development, where covalent organic framework (COF) has been designed as one of the new porous materials. 2D COF is one kind of porous polymer nanosheets which have highly crystalline structures, tunable function, and high chargecarrier transfer ability.…”

“…It also used to suppress side reactions, improving the interfacial contact between the electrode and electrolyte. [ 87–89 ]…”

A Comprehensive Review on the Applications of Boron Nitride Nanomaterials in Membrane Fabrication and Modification

“…However, perdurable stability and sensitivity to the environment are the main disadvantages of these membranes. In this context, a study suggested by Dou et al revealed that BN membranes obtained by filtration assistance were found to be promising since BN has great thermal and chemical stability . Without considering the detailed mechanism of fabrication, the membranes are obtained through the vacuum filtration of BN nanochannels onto the Nylon support, and asubsequent spin coating of the reactive ionic liquid (RIL) nanoconfinement in BN nanochannels, as is shown in Figure a.…”

Theoretical study of the oxygen reduction reaction on Ni‐N‐C and Co‐N‐C catalysts derived from ZIF ‐8

“…However, Pt‐based materials face major commercialization challenges including high cost, limited resources, poor durability, and tolerance to poisoning 2‐4 . Therefore, it is necessary to find nonprecious metal‐based catalysts with low price, high activity, and high stability instead of the Pt catalyst 5,6 …”

“…[2][3][4] Therefore, it is necessary to find nonprecious metal-based catalysts with low price, high activity, and high stability instead of the Pt catalyst. 5,6 Transition metal-nitrogen-carbon materials (M-N-C,…”