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Reducing CO2 emissions is crucial for the future survival of the planet and the demand for innovative technologies to capture and reduce CO2, focusing on global net-zero carbon emissions is growing significantly. Hence, researchers worldwide are investigating approaches to mitigate the greenhouse effect caused by excessive emissions of CO2. Low melting point liquid metals offer promising opportunities to exploit novel chemistry in negative emission technologies. In this paper, a high-yield, safe and on-demand approach based on Li-containing liquid metal for the reduction of CO2 to solid materials at low temperatures and atmospheric pressure is reported. In this process, Li metal plays a major role in driving the dissociation of CO2 to its elemental constituents, carbon and oxygen. During the CO2 reduction process, Li dissolved in gallium liquid metal, diffuses to the liquid–gas interface and reduces CO2 to carbon, while undergoing an oxidation reaction. The resulting crust that forms on the surface of the Li–Ga liquid metal alloy consists of solid carbonaceous materials that can be directly utilized as a supercapacitor, achieving a sustainable process for CO2 reduction. The use of Li–Ga liquid metal alloys enables CO2 conversion at near room temperature producing carbonaceous materials that can be effectively integrated into energy storage systems. [ABSTRACT FROM AUTHOR]

We report a synthetic strategy for constructing a novel flexible MOF from a rigid parent structure by ligand exchange. This is the first reported study on introducing flexible heterogeneity into a rigid structure via substantial structural rearrangement. The daughter material exhibits enhanced gas separation selectivity compared with the parent. [ABSTRACT FROM AUTHOR]

We report an unusual operating regime for a chabazite zeolite in which the adsorption selectivity for N2 over CH4 inverts from being more selective for N2 at 253 K, to becoming less selective with increasing temperature and eventually becoming selective for CH4 over N2 above 293 K. [ABSTRACT FROM AUTHOR]

We report a synthetic strategy for constructing a novel flexible MOF from a rigid parent structure by ligand exchange. This is the first reported study on introducing flexible heterogeneity into a rigid structure via substantial structural rearrangement. The daughter material exhibits enhanced gas separation selectivity compared with the parent.

We report an unusual operating regime for a chabazite zeolite in which the adsorption selectivity for N2 over CH4 inverts from being more selective for N2 at 253 K, to becoming less selective with increasing temperature and eventually becoming selective for CH4 over N2 above 293 K.