The new graphene air filter is introduced, can be completely sterilized by current
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Update time : 2020-04-23 11:00:08
With the worldwide attention to the prevention and spread of COVID-19, Ben-Gurion University in the Negev, Israel is developing a new type of self-disinfecting and purifying air filter based on graphene water filtration technology. Dr Chris Arnusch of Ben-Gurion University in the Negev is committed to cleaning water by developing membranes with antibacterial and antiviral properties. Now he has successfully developed laser-induced graphene (LIG) Water filter.
LIG is a microporous graphene foam that can be produced on a variety of materials. The laser-induced graphene water filter can not only effectively filter pollutants in water, but also actively kill bacteria and viruses with the low-level current. Therefore, scientists designed a new air filter based on this principle.
This novel nanotechnology is based on laser-induced graphene water filters, which can be used in heating, ventilation, and air conditioning systems, or integrated into face masks for disinfection. Most covers will be contaminated during use, including N95 masks, which can become a source of contamination if misused or mishandled.
The researchers said that this new nanomaterial could be wholly sterilized by the current so that LIG air filters may be combined with the most advanced air filters (such as HEPA filters). This filter can add an active protective layer and extend the service life of other expensive air filters.
In the sensitive period of the new crown epidemic, LIG air filters can not only make hospitals, cars, public transportation, etc. a safer space. If this material is included in the hood, it will also provide a higher level of protection for medical personnel and ordinary people.
It is understood that graphene is known as the "king of new materials." China is a vast country of graphene resources and one of the most active countries in graphene research and application development. Cheng Huiming, the academician of the Chinese Academy of Sciences, reported during the conference that the theme of "Preparation of Graphene and Other Two-Dimensional Materials by Exfoliation Method" mainly introduces the intercalated expanded liquid-phase exfoliation and electrochemical exfoliation processes. The high-quality graphene materials prepared in large quantities from natural graphite make it widely used in composite materials, energy storage, and conductive inks.
Cheng Huiming is mainly engaged in the research of carbon nanotubes, graphene, other two-dimensional materials, energy conversion and storage materials. He has obtained more than 100 invention patents, and many of them have been transferred. He said that now the most important thing is to prepare graphene with high quality, and at the same time find a breakthrough in the application of graphene, so in recent years, many advances have been made in this area. Currently, graphene also has commercial applications, including anti-corrosion coatings, additives in ion batteries, etc. Recently, a graphene heat dissipation film has been used in the latest mobile phone just launched by a Chinese company, which will distribute the heat evenly and dissipate heat, which improves the performance of the mobile phone.
Cheng Huiming believes that Guangxi should combine its technical characteristics, especially like Liuzhou, a major industrial city, and combine its pillar industries to conduct research and development and application of graphene, including the use of lubricants in automobiles and construction machinery. The graphene industry in Guangxi will There is an excellent development.
During the meeting, the participating experts conducted several academic discussions on cutting-edge research, testing and standard formulation, as well as applications in hot areas such as lighting, rubber tires, metal-based composite cement-based concrete, lubricants, energy conservation and environmental protection, new energy, and coatings.
Graphene, known as "black gold", is the thinnest, strongest, and the most conductive and thermally conductive nanomaterial discovered so far and is also one of the most promising advanced materials in the future. In recent years, Chinese officials have adopted a series of policies and related standards to support the development of the graphene industry. According to the industry development roadmap, by 2020, the goal of China's graphene industry is to form an industry scale of 10 billion yuan, and the overall industry scale will exceed 100 billion yuan by 2025.
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