含蓝藻的3D打印材料拥有双重固碳能力

Core Insights - A multidisciplinary research team from ETH Zurich has developed a 3D printable hydrogel that encapsulates photosynthetic cyanobacteria, creating a living material capable of self-growth in sunlight and artificial seawater while actively removing carbon dioxide from the air [1][2] - This material exhibits dual carbon sequestration capabilities, fixing carbon dioxide absorbed during cyanobacteria growth and storing it in mineral form, potentially contributing to green building and carbon capture technologies [1] - The cyanobacteria's high photosynthetic efficiency allows it to produce biomass even under low light conditions, while also altering the chemical environment to facilitate the precipitation of solid minerals, which serve as a more stable form of carbon storage compared to biomass [1] Material Characteristics - The base material is a high-water-content hydrogel that allows light and nutrients to pass through while evenly distributing the cyanobacteria [2] - The research team optimized the hydrogel's structure using 3D printing to enhance surface area, light penetration, and nutrient flow, ensuring the longevity and efficiency of the cyanobacteria [2] - Experimental results indicate that the material can capture carbon dioxide for up to 400 days, with an average carbon sequestration rate of approximately 26 milligrams per gram of material, significantly higher than many traditional biological methods [2]