China Education Equipment Procurement Network News: A research team composed of scientists from the University of Nottingham in the United Kingdom recently announced that they have changed the internal structure of carbon nanotubes for the first time through nanoscale chemical reactions. This study overturns the previous conclusion that the inner surface of the hollow nanostructure is chemically stable and less prone to reaction. Research shows that the changed shape of carbon nanotubes is an exciting new material that will play an important role in the development of electronic devices such as natural gas storage equipment, chemical sensors, and transistors. Related papers were published in the journal Nature.Chemistry. Andrei Korobistov, Ph.D. in the Department of Chemistry at the University of Nottingham, who led the research, said that for a long time, the inside and concave surface of carbon nanotubes were considered to be inert and not easy to react. Carbon nanotubes are often used as nanoreactors. However, they accidentally discovered in the new research that when the active transition metal element is catalyzed in the cavity of the carbon nanotube, the carbon nanotube as the reactor itself undergoes a chemical reaction. Carbon nanotubes are a typical nanostructure with a diameter of about 1 nanometer to 2 nanometers, 80,000 times thinner than human hair. Korobistov and his colleagues have previously discovered that carbon nanotubes can be used as catalysts for the production of nanoribbons, and published relevant papers in the journal Nature. This nanoribbon is a new material with great potential, which can be used to make faster, smaller and more powerful computers. In the latest research, scientists discovered that the chemical reaction involving a single atom of metal rhenium (Re) can change the structure of the inner wall of the nanotube. Through cooperation with the University of Ulm, Germany, and with the help of the institution's most advanced high-definition correction electron microscope (AC-HRTEM), scientists can observe the real-time images of the transition metal atoms in carbon nanotubes at the atomic level. The researchers found that initially, the attack initiated by rhenium would first create a defect in the inner wall of the carbon nanotube, and then "eat" the excess carbon atoms to turn it into a nano-scale protrusion. Subsequently, this protrusion will rapidly increase in size and seal itself, forming a unique carbon structure. Because this protruding structure is very similar to the new green buds on the branches, the researchers named it "nano-buds". Previously, the nanobud structure was thought to be formed only on the outer surface of carbon nanotubes through reactions involving carbon molecules. New research has changed this view and found for the first time that nanobuds can form from within. PVC Cling Film is also polyvinyl chloride. Due to the production process, PVC cling film will add a lot of plasticizer during the production process, which is the plasticizer we usually say. If the PVC cling film is heated or in contact with grease foods, the plasticizer contained in the PVC wrap film is easy to precipitate, and the food is brought into the human body, causing certain harm to the human body and even causing cancer. However, PVC cling film is used for preservation of fresh fruits and vegetables, and there is no problem. PVC Cling Film PVC Film,PVC Cling Film,PVC Cling Wrap,PVC Plastic Wrap Shenzhen Chengxing Packing & Material Co.,Ltd , https://www.cxpack.com
The latest discovery: the inner wall of carbon nanotubes participate in chemical reactions