One-Pot Synthesis of Triazine-Embedded Hierarchically Porous Organosilica Polymers via Tandem Condensation for Carbon Capture and Conversion

In contrast to the traditional methods that rely on prefabricated supports or postsynthetic triazine integration, our strategy allows triazine moieties to be covalently embedded in situ inside the silica backbone, providing uniform distribution and improved structural integrity.

The produced silica-based porous organic polymers (POPs) have high thermal stability (up to 250 °C) along with high specific surface areas (200–600 m²g^–1). The presence of hierarchical porosity (meso- and microporosity) guarantees quick diffusion of the reactant and intermediates during catalytic reactions in addition to facilitating efficient CO₂ adsorption at the pore surfaces. Using this structural advantage, a two-step CO₂-valorization method was investigated: first, CO₂ was converted to cyclic carbonates, and then it was reduced to methanol.