Large-area graphene-nanomesh/carbon-nanotube hybrid membranes for ionic and molecular nanofiltration

Abstract

Nanoporous two-dimensional materials are attractive for ionic and molecular nanofiltration but limited by insufficient mechanical strength over large areas. We report a large-area graphene-nanomesh/single-walled carbon nanotube (GNM/SWNT) hybrid membrane with excellent mechanical strength while fully capturing the merit of atomically thin membranes. The monolayer GNM features high-density, subnanometer pores for efficient transport of water molecules while blocking solute ions or molecules to enable size-selective separation. The SWNT network physically separates the GNM into microsized islands and acts as the microscopic framework to support the GNM, thus ensuring the structural integrity of the atomically thin GNM. The resulting GNM/SWNT membranes show high water permeance and a high rejection ratio for salt ions or organic molecules, and they retain stable separation performance in tubular modules.

High-permeance polymer-functionalized single-layer graphene membranes that surpass the postcombustion carbon capture target

“…The recent development in the scale-up of single-layer graphene membranes can be adopted to scaling SPONG based membranes (Supplementary note VI, ESI †). 53 Considering the exceptional performance and the high tunability potential of this hybrid approach, it could pave the way for nextgeneration high-performance membranes for several critical separations.…”

Combining Silk Sericin and Surface Micropatterns in Bacterial Cellulose Dressings to Control Fibrosis and Enhance Wound Healing

“…and ab initio calculations forecasted that, when graphene is perforated systematically, it would become an ideal membrane material in terms of selectivity and permeability which can outperform the established polymer membranes. 16 During the past few years, researches have revealed many encouraging facts and findings regarding the immense potential of graphenebased membranes for separating not only gases but also ions [17][18][19][20][21][22][23][24] and liquids (aqueous/non-aqueous). [25][26][27][28] In this concise review, we provide a brief synopsis of the recent advances in graphenebased gas-separable membranes and the challenges associated for their use as next-generation industrial membranes.…”

Novel two-dimensional monoelemental and ternary materials: growth, physics and application

“…Through fast development in 15 years, two-dimensional layered materials (2DLMs) such as graphene (Gr) (0 eV) have not only become a revolutionary material but also received large-scale high-quality production [1][2][3][4]. Recently, graphene-based magic-angle superconductor [5], hybridization filter membrane [6], flexible electronics [7,8] and transfer technology have been achieved [9,10], which brings a new groundbreaking period. Recently, a new cousin of graphene, called "plumbene," which has the famous Weaire-Phelan bubble structure, has been considered to bring a new boom in the post-Moore law period [11].…”