The polymer material refers to a material formed by a monomer obtained by a polyaddition reaction or a polycondensation reaction, such as various plastics, rubbers, and the like, and it is also a raw material for producing a textile synthetic fiber. With the rapid development of high technology, the application of polymer materials in all walks of life is increasing day by day. The harm caused by the non-degradability and low recycling rate of polymer materials can not be underestimated. Now it has become a solid waste treatment. One of the world's toughest puzzles. Green polymer material is an environmentally friendly polymer material. “Green†means starting from the source of synthesis of polymer materials—monomers, choosing environmentally friendly monomer materials and synthetic processes, and considering the compatibility of synthetic polymer materials with the environment (ie, in a shorter time In-house degradation or depolymerization) and the product's life cycle (products are recycled after use). Although the current greening of polymer materials is mainly reflected in the study of degradability, the search for more green, sustainable and synthetic raw materials has always been a goal pursued by scientists. In particular, the use of "greenhouse gas" CO2 synthetic polymer materials research has frequently appeared in the world's top academic journals in recent years. Recently, the Ted Sargent team at the University of Toronto in Canada released a research report saying that it has found the most efficient conditions for converting CO2 into ethylene. Ethylene can then be used to make polyethylene, the world's most-used plastic with an annual production of about 80 million tons. It is understood that the core task of this research is the process of CO2 reduction. With the aid of a catalyst, CO2 is converted into other chemical substances through current and chemical reactions. In this reaction, many metals can be used as catalysts. For example, gold, silver and zinc can catalyze the production of CO, while tin and palladium can catalyze the production of formic acid, and copper can catalyze the production of ethylene. Using unique equipment developed by Canadian Reg Source senior scientist Tom Regier, the researchers were able to study in real time the copper catalyst's morphology, shape, and chemical environment throughout the entire process of carbon dioxide reduction. It also confirmed the precise conditions for maximizing ethylene production and adjusted the catalyst to achieve the goal of maximizing ethylene production while minimizing methane production. The study has been published in Nature Catalysis, the latest title in the Nature series. Prior to this, a research team at Stanford University in the United States also put forward a research paper published in the journal Nature that could turn carbon dioxide and crop residue and other plant materials into plastics. Researchers mixed carbonates, CO2, and phthalic acid derived from furfural and heated them up to 200°C to present a molten salt state. After 5 hours, 89% of the total molten salt mixture will be converted into 2,5-furan2. Formic acid, in turn, produces polyethylene furandicarboxylate (PEF) which can replace polyethylene terephthalate to some extent. The 2,5-furandicarboxylic acid, unlike terephthalic acid, can be a derivative of a biological material. In addition, bioplastics produced on the basis of microorganisms, such as starch, are recyclable, making them very environmentally friendly. Meiji University has successfully increased the production of bio-plastic raw materials, succinic acid and lactic acid, by changing the hydrogen synthase activity of cyanobacteria, which is expected to contribute to solving future environmental and energy problems. The research results were published in the magazine "Algal Research".
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Nanostructured copper catalyst surface for converting CO2 into ethylene 