Selective Diffusion of CO and HO through Carbon Nanomembranes in Aqueous Solution as Studied with Radioactive Tracers.

Nanometer-thin carbon nanomembranes (CNMs) are promising candidates for efficient separation processes due to their thinness and intrinsic well-defined pore structure. This work used radioactive tracer molecules to characterize diffusion of [H]HO, [C]NaHCO, and [P]HPO through a -[1,1',4',1″]-terphenyl-4-thiol (TPT) CNM in aqueous solution. The experimental setup consisted of two microcompartments separated by a CNM-covered micropore.

Ultrahigh Ionic Exclusion through Carbon Nanomembranes.

The collective "single-file" motion of water molecules through natural and artificial nanoconduits inspires the development of high-performance membranes for water separation. However, a material that contains a large number of pores combining rapid water flow with superior ion rejection is still highly desirable. Here, a 1.

Rapid Water Permeation Through Carbon Nanomembranes with Sub-Nanometer Channels.

The provision of clean water is a global challenge, and membrane filtration is a key technology to address it. Conventional filtration membranes are constrained by a trade-off between permeance and selectivity. Recently, some nanostructured membranes demonstrated the ability to overcome this limitation by utilizing well-defined carbon nanoconduits that allow a coordinated passage of water molecules.