Skip to main content

Improving Dialysis Process with Graphene

Researchers from Mechanical and Electrical Engineering Departments of MIT recently showed that graphene is a powerful material candidate for use in the dialysis systems (such as hemodialysis machines in medical institutes for filtering human blood). In order to prepare graphene as a dialysis material, researchers used a procedure opposite to the general treatments that nanotechnology people use.
Dialysis is a process of filtering different solutions such as human blood by a membrane in order to remove waste molecules, drugs, chemical residues from the solution. In some cases, the process can be used for purification of chemicals or isolation of different molecules for medical diagnosis. It is an essential process for scientists especially in the medical operations.


The traditional membranes used in dialysis are thick materials. They make dialysis process run very slow because their dense and thick structure prevent quick pass of the molecules through the membranes. Piran Kidambi and his group from MIT produced ultrathin graphene sheets ( thickness <1 nm, 20 times thinner than the thinnest commercial membrane present) as membranes and tested these membranes in dialysis conditions. Test results revealed that graphene based membranes could filter out desired molecules 10 times faster than today’s dialysis membranes.
Kidambi’s group prepared the membranes using a different route. They synthesized graphene sheets with a conventional chemical vapor deposition process. After that, they treated graphene sheets with oxygen plasma to create pores with various sizes which was the opposite of general route to prepare perfect and defect-free graphene structures that most of the scientists try to achieve. The first membrane production processes yielded with graphene membranes with very small surface area, but scientists plan to produce larger commercial graphene membranes by optimization of production procedure.

Link: http://news.mit.edu/2017/scientists-produce-dialysis-membrane-made-from-graphene-0628

 For Related Products, please visit:
https://nanografi.com/graphene/cvd-graphene/
https://nanografi.com/graphene/graphene-sheet-29x-59-cm/
https://nanografi.com/graphene/graphene-nanoplatelet-99-5-3-nm-s-a-300-m2-g-dia-1-5/
https://nanografi.com/graphene/graphene-nanoplatelet-99-5-3-nm-s-a-500-m2-g-dia-1-5/
https://nanografi.com/graphene/graphene-nanoplatelet-99-9-3-nm-s-a-800-m2-g-dia-1-5/
https://nanografi.com/graphene/reduced-graphene-oxide-rgo-s-a-1562m2-g-2-5-layers/https://nanografi.com/blog/improving-dialysis-process-with-graphene/

Comments

Post a Comment

Popular posts from this blog

Usage of Silver Conductive Adhesive Paste in Corrosion Protection

In electronics, solders are main material to connect electrical components to substrates which are generally printed circuit boards. Although they are cheap, they are not effective if long term performance is considered since solders have low resistivity to corrosion relatively. Since corrosion reduce reliability, the cost of advanced technological systems such as RADAR, SONAR, LIDAR and more increase. In addition, small signals can be lost, and in huge data transfer, some of the data can be lost also especially which may lead catastrophic failures in critical systems. For instance, surface to air missiles can be launched to target which is not exist if the data coming from detection systems is noisy. Therefore, corrosion protection is necessary, and  silver conductive adhesive paste  is an essential candidate to replace PbSn solders due to its resistivity to corrosion. Silver conductive adhesive paste provide not only noisy reduction but also electromagnetic interference whi...
Post a Comment
Read more

Titanium Carbide Powders and Applications

Titanium carbide which has the chemical formula of TiC attracted great interest for many structural applications due to its extremely high melting temperature, high hardness, high chemical resistance and good electrical conductivity. Therefore titanium carbide can be used in cutting tools, grinding wheels, wear-resistant coatings, high temperature heat exchangers, magnetic recording heads, turbine engine seals, and bullet-proof vests, etc. In addition, a promising field of application comprises plasma and flame spraying processes in air, where titanium carbide-based powders show high-phase stability. TiC(Titanium Carbide Powder) (325 mesh, 99,9+%)  can also be used in biomedical implant devices. Materials used for biomedical implant devices must satisfy a variety of property demands, which are often mutually exclusive. Further, different parts of a device demand different material properties. These factors often make it difficult to manufacture a medical device using a...
Post a Comment
Read more

Difference between Anatase and Rutile Titanium Dioxide (TiO2) Nanoparticles

Titanium oxide  is the one of the top 50 chemicals which are produced in worldwide. It occurs in nature in three forms anatase, rutile and brookite. However, commonly, anatase and rutile forms have been used and studied. Naturally, it has whitish and opaque appearance, and through purification, it becomes whiter. Difference in crystal structure of these two forms as you can see in Figure 1 aroused interest in discrepancies between these forms, and many studies have been conducted. Figure 1: Crystalline structure of titanium dioxide anatase (a) and rutile (b) Ti and O atoms are represented in white and red respectively.                                                                                                P. Mazzolini, Functional Prop...
Post a Comment
Read more