CaO nanocrystals grown over SiO2 microtubes for efficient CO2 capture: organogel sets the platform

Abstract

Materials that can capture and store CO₂ are important. Though CaO is a cheap sorbent, it is inefficient for practical purposes due to sintering and poor diffusion of CO₂ through the surface-CaCO₃ layer. We have developed a high performance, sintering-resistant CaO-based sorbent by uniformly nanofabricating the CaO nanocrystals on SiO₂ microtubes made by organogel templated polymerization.