可降解塑料PLA
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首创!中国科研团队利用海水合成可降解塑料PBS、PLA
synbio新材料· 2025-10-11 09:35
Core Viewpoint - The article discusses the development of an "artificial ocean carbon cycling system" that combines electrocatalysis and biocatalysis to capture CO₂ from seawater and convert it into valuable chemical products, addressing both ocean acidification and carbon reduction goals [2][3][4]. Group 1: Research Overview - The research was conducted by a collaboration between the Shenzhen Institute of Advanced Technology and the University of Electronic Science and Technology, focusing on a novel strategy for carbon capture and conversion [2][5]. - The system captures CO₂ from natural seawater with an efficiency of over 70% and can operate continuously for over 500 hours [3][4]. - The captured CO₂ is converted into formic acid using a high-activity bismuth-based catalyst, which is then transformed into biodegradable plastic monomers [3][4]. Group 2: Technological Innovations - A new electrolytic device was designed to overcome challenges such as electrode passivation and salt deposition, enhancing the efficiency of carbon capture [3]. - The engineered bacteria developed can efficiently metabolize high concentrations of formic acid, producing key monomers for biodegradable plastics [3][4]. Group 3: Industrial Applications - The research demonstrated the feasibility of scaling up from laboratory to pilot levels, successfully producing biodegradable plastics like PBS and PLA [4]. - The project aims to create an integrated "green factory" along coastal areas, continuously capturing CO₂ and converting it into green plastic materials [4]. - The platform has the potential to expand into a variety of products, including organic acids and surfactants, serving multiple industries such as materials, chemicals, pharmaceuticals, and food [4].