Preparation of nano-sized Mg-doped copper silicate materials using coal gangue as the raw material and its characterization for CO2 adsorption

Review of the Preparation and Application of Porous Materials for Typical Coal-Based Solid Waste

“…They found that it conformed to the Langmuir isotherm model, indicating strong adsorption forces on its surface, and the partial desorption of CO 2 after heating confirmed the existence of hydrogen bonding. Wu et al [73] hydrothermally synthesized Mg-doped CuSiO 3 material by adding a Mg 2+ solution to a SO 3 2− solution made from coal gangue. Although the doping of Mg leads to a decrease in the pore size and specific surface area of the mesoporous CuSiO 3 material, it could effectively increase the number of hydroxyl groups on the surface of the CuSiO 3 material.…”

“…Using fly ash and coal gangue as raw materials to produce solid-waste-based gas adsorbents has significant economic and environmental benefits. Various solid-waste-based adsorbents have recently been developed to effectively adsorb common waste gases such as CO 2 , SO 2 , and NO x [73,77,81]. Some solid-waste-based materials can strongly interact with specific waste gases through their active substances and functional groups, such as the reaction between alkaline substances in solid waste materials and acidic gases and the hydrogen bonding interaction between hydroxyl groups on the surface of solid waste materials and CO 2 .…”