Is the performance of graphyne in seawater desalination better than that of graphene?

Unlike graphene(with single or double bonds), graphene can have double or triple bonds, and it is not limited to only one hexagonal style. In fact, the number of styles that it can exist is almost unlimited. The DanielleMalko(2012) team used their computer simulations to observe three graphyne style types and found that they all produced Dirac cones, although the shapes were slightly different; But perhaps most importantly, one of them is called 6, 6, 12-graphyne, which exists in a rectangular style and should enable electrons to travel only in one direction. Accordingly, the researchers suggest that materials may not need to be doped, or non-carbon atoms, as in the case of graphene, to provide an electron source.

A few years later, in addition to a few studies of Publication, have you heard that the company has invested in graphite graphyne production? No, because at present only a very small part of graphene is produced. Recently, it was reported that graphene was a collaboration between the Chinese Academy of Sciences Huang Changshui and Liyuliang. For the first time, graphene should be used in the electrical materials of sub-electric pools, and a detailed analysis of its electrical storage performance and storage machine system was carried out. The relationship between graphene structure, morphology, and electrical properties was clarified, and the application of graphene material in the cell was explored. The paper confirmed that the layer spacing of graphene films is 0.365 nanometers, and the thickness of the resulting graphene films can be controlled between 15 and 500 nanometers. At the same time, graphene films exhibit good semiconductor properties and it is found that the conductivity of graphene increases gradually with the decrease of graphene thickness.

For the first time, The researchers first determined the hole mobility of graphene films, demonstrating the high mobility proposed by theoretical workout, which proved that the high mobility proposed by the theoretical calculation gradually decreased with the increase of the thickness of the graphyne film. The mobility of a graphene film with a thickness of 22 nm can reach 100-500 cm2·V-1·S-1. Are you kidding me? 22 thickness nanometer also dare to compare with graphene? Can the mobility reach 100-500 cm2 / V · S and graphene gap are so large? In fact, in addition to the band characteristics, graphyne is not comparable to graphene at all, and it is difficult to prepare. Only the academic community will play in order to publish the paper. The business community is not convinced that the headshell will be broken and it will soon be mass-produced. According to this data, it is assumed that graphyne cannot be desalination.

Do you know what graphene does for desalination? One is to use hydrophilic graphene oxide films to interact with water to form capillary channels of about 0.9 nanometers wide, allowing ions or molecules with diameters less than 0.9 nanometers to pass quickly, while ions with diameters greater than 0.9 nanometers are completely blocked. This screening effect not only requires very accurate ion size but also spreads thousands of times faster than the traditional concentration. The other is the reverse osmosis method, which is also made into a hydrophilic graphene oxide film, but the principle of action is different. Graphene is expected to replace Silicon, the semiconductor material at most, and is widely used in the production of electronic products, but that is only due to its band characteristics. There is still a long way to go to succeed. However, due to the fact that the research on graphene is still in the theoretical stage, the research on the method of preparing graphyne at low cost, large quantities, and high quality is still immature, so it faces great challenges.

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