High performance co2 adsorbents made from natural silk

Abstract

A solid amino acid-based CO2 sorbent derived from silk fibroin, and the use of the sorbent for CO2 capture. The silk fibroin may be provided in the form of nanoparticles or an aerogel, free of solid or porous support. Mechanical reinforcements using materials such as graphene nanorods could be incorporated for enhancing mechanical rigidity and long-term operational stability. The silk fibroin-based sorbent offers high CO2 adsorption capacity, low CO2 desorption temperature, high thermal stability, natural synthesis, eco-friendly nature, light weight, and high level of mechanical flexibility, making it a superior CO2 adsorber.

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