Greenhouse gases, which are generally considered to be the main culprits of global warming, are usually derived from industrial production and the burning of fossil fuels. Among them, carbon dioxide is the largest greenhouse gas emission, and it is also the main target of human inhibition of global warming. However, high costs and low returns have become a roadblock to carbon governance. However, there has been a good news recently. According to the Daily Science Daily report on September 9th, researchers at the Institute of Cellular Materials, Kyoto University, Japan (iCeMS) have developed a low-cost membrane that can effectively remove greenhouse gases from the air, such as the application of this technology to carbon dioxide. Filtration may help reduce greenhouse gas emissions, thereby curbing the greenhouse effect. The research results are published in the UK's "Nature and Communications" magazine. This type of film capable of filtering carbon dioxide is abbreviated as PIM-1. "This thin film has embedded a small pipe with a diameter of less than two nanometers and can be used to capture all the gas that passes." Song Qilei (transliteration) who participated in the study said, "The existing problem is that the structure of the film is not yet very stable. And the gas separation rate is limited." To improve the instability of the material, the team used thermal oxidation to heat the material in an oxygen environment at 120 to 450 degrees Celsius. At high temperatures, oxygen can react chemically with PIM-1, strengthening the strength of the nanotubes in the film and controlling the diameter of the pipe, increasing the stability of the material and the separation rate of the target gas. Now, PIM-1 material has an air filtration rate that is more than 100 times that of common commercial polymers, and it also has more than twice the CO2 separation rate. PIM-1 has a wide range of application prospects: it can be used to reduce the carbon dioxide concentration emitted from the combustion of fossil fuels, increase the effective oxygen content in internal combustion engines, and be used in the production of hydrogen and plastics. At present, it takes a lot of overhead to govern carbon dioxide, and the value of carbon dioxide itself is not sufficient for commercial development, which greatly reduces people's enthusiasm for controlling carbon dioxide emissions. Therefore, this kind of low-cost, high-efficiency method may have good prospects now that countries in the world are beginning to reduce their carbon footprint. The researchers said: "It can be said that we have developed a polymer that truly contributes to sustainable development. Compared with existing materials, PIM-1 has a carbon dioxide separation capability of more than 1000 times, and it can be used for a long time. It is also easy to accept, and I believe this technology will help improve the natural environment." Filtering water with nanometer pore size is a very mature technology. In many water plants, the membrane is the last one to stop all the microbes and dirty particles in the water, and release the water molecules at the same time. The pore size of the membrane can be further refined to separate oxygen and carbon dioxide. However, the aperture must be small enough to hold large carbon dioxide molecules but allow smaller oxygen molecules to pass through. The number of holes is more than one cow's hair in a whole dairy farm, but the diameter is the same, and it is difficult for such membranes to be mass-produced. The pioneering work of Kyoto University in Japan is another masterpiece of nanotechnology. Even if it can't be installed on the chimney at last, at least it will increase the filter level by a few orders of magnitude, which may give rise to new industries. (intern reporter Yanyan Liu) Paint Brush,Paint Brush Online,Oil Brush Photoshop,Paint Tool Sai Brush Laizhou Chenke trading Co., Ltd. , https://www.chenkegroup.com