Filtering device using filtering membrane prepared from two-dimensional micro-nano material

Abstract

The invention relates to a filtering device using a filtering membrane prepared from a two-dimensional micro-nano material. The filtering device comprises a first container used for accommodating liquids or gases to be separated, a second container which is connected with the first container and used for collecting separated liquids or gases, and a filtering membrane arranged at the junction of the first container and the second container for making the liquids or gases in the first container capable of flowing to the second container in the direction parallel to the thickness of the filtering membrane, wherein the filtering membrane comprises multiple two-dimensional micro-nano material microchips which are arranged by being stacked layer upon layer, a plurality of micropores are defined between two adjacent two-dimensional micro-nano material microchips, and the thickness directions of the two-dimensional micro-nano material microchips are perpendicular to the thickness direction of the filtering membrane. Many short channels are formed among the two-dimensional micro-nano material microchips of the membrane with the structure, and have smooth atomic scales, so that low-friction high-speed transportation can be realized. The filtering device using the filtering membrane prepared from the two-dimensional micro-nano material provided by the invention has the advantages of high flux and low energy consumption.

Description

technical field [0001] The invention belongs to the field of micro-nano technology, and in particular relates to a filter device using a filter membrane of a two-dimensional micro-nano material. Background technique [0002] Traditional filter membranes can be divided into microfiltration membranes (MF, pore size 0.02 microns to 10 microns), ultrafiltration membranes (UF, pore sizes 0.001 microns to 0.02 microns) and reverse membranes according to their pore sizes (or molecular weight cut-offs). Permeable membrane (RO, pore size 0.0001 micron ~ 0.001 micron), etc. At present, with the discovery of two-dimensional micro-nano material microchips such as graphene and graphene oxide, the use of two-dimensional micro-nano material microchips to prepare filter membranes has become a research hotspot. [0003] The 2010 Nobel Prize winner Andre Heim's research group reported in the 2012 Science journal that a layer-by-layer graphene oxide film with a submicron thickness was fabrica...

AI Technical Summary

Problems solved by technology

However, when filtering along the thickness direction of graphene oxide microsheets, water molecules need to "intersperse and detour", see figure 2 a, leading to reduced flux and energy dissipation in graphene oxide membranes

Images