▎ 摘　　要

NOVELTY - Material comprises graphene aerogel, graphene oxide aerogel, graphene xerogel and graphene oxide xerogel, which comprise a layered double hydroxide (LDH). USE - The material is useful: for gas (such as carbon dioxide) sorption, capture and/or storage; in a catalytic system, a gas adsorption medium, a fluid heater, an electrically-regenerable filter or sorbent and a composition (all claimed) such as resins, gelling agents, polymers or fillers; and as heterogeneous catalyst for preparing compounds such as aldols, alpha , beta -unsaturated nitriles, alpha , beta -unsaturated esters, transesterified products, beta -nitroalkanols, Michael adducts and epoxides and for preparing drugs, pharmaceuticals, perfumes, cosmetics, oils, paint and fine chemicals. ADVANTAGE - The material: has mechanical properties, high thermal and physical stabilities; lowers electrical resistance; increases the carbon dioxide adsorption capacity of the LDH by enhancement of particle dispersion and gas accessibility by supporting LDH onto such graphene or graphene oxide aerogel and xerogel, the regeneration and cycling stability of the adsorption by supporting the LDH onto a high surface area material after continuous absorption-desorption cycles; exhibits rapid and homogeneous heating, fast cycling, rapid emission of stored species, and minimal thermal degradation of the gas, accurate temperature control to allow fractionation of adsorbed species by type; and ensures that additional linking molecule interposed between the graphene is avoided thus maximizing the electrical conductivity of the junction, and minimizing the additional reagents required and subsequent parasitic mass added to the network. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) preparing the material, comprising providing a graphene aerogel, graphene oxide aerogel, graphene xerogel and/or graphene oxide xerogel, and depositing LDH on the above aerogels or xerogels; (2) a composition comprising the material, and at least one adjunct material, preferably a support material; and (3) heating the aerogel or xerogel, comprising providing the aerogels or xerogels, and applying an electrical current on the aerogels or xerogels.