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A facile one-step synthetic strategy is proposed here to realize simultaneous amine-functionalized and Fe-doping modification of ZIF-8, aiming to optimize the Lewis acidic and basic properties of ZIF-8 for enhanced CO 2 adsorption and subsequent cycloaddition reaction of CO 2 and epichlorohydrin under solvent-free and relatively mild conditions (0.1 MPa and 80 °C). The obtained Fe-ZIF-8-NH 2 exhibits an improved CO 2 adsorption capacity of 63 mmol/g as compared to that of 18 mmol/g for pristine ZIF-8 and delivers a high catalytic CO 2 cycloaddition efficiency with the yield of target product of 92%, much higher than that of Fe-ZIF-8 (80%), ZIF-8-NH 2 (62%) and pristine ZIF-8 (40%). The improved performance can be attributed to the introduction of abundant –NH 2 groups and Fe-doping that enrich the Lewis acidity and basicity. Moreover, the obtained Fe-ZIF-8-NH 2 also exhibits high chemical stability and satisfactory recycling ability, which makes the obtained sample a promising catalyst for CO 2 capture and utilization. [Display omitted] • Fe-ZIF-8-NH 2 is constructed by a one-step synthetic method. • The Lewis acidity and basicity of ZIF-8 are optimized. • Fe-ZIF-8-NH 2 exhibits an improved CO 2 adsorption capacity. • Fe-ZIF-8-NH 2 displays a satisfactory CO 2 cycloaddition efficiency. [ABSTRACT FROM AUTHOR]

[Display omitted] • A summary of low-concentration CO 2 capture and conversion over porous materials. • Key roles of porous materials in utilization of CO 2 from dilute sources. • The challenges and future trends of porous catalysts for conversion of diluted CO 2. Carbon accumulation has raised worldwide concerns due to the risks of climate change. In such cases, direct carbon dioxide (CO 2) capture and conversion from diluted sources has potential for negative carbon emission. Distinct from non-porous catalytic systems, the fascinating features of large specific surface area, highly exposed catalytic sites, varied structures and tunable functions make porous materials attractive candidates for integrating the process of capture and utilization of diluted CO 2. In this review, we firstly provide a brief overview of the recent developments of porous materials, including zeolites, metal–organic frameworks, porous organic polymers, porous carbon, and functionalized mesoporous materials and their applications for CO 2 adsorption at relatively low partial pressure. Afterwards, direct chemical transformation of diluted CO 2 over different porous catalysts is discussed with the emphasis of their diverse functional roles. This is followed by a brief summary of current challenges and our personal view on future directions of this field. [ABSTRACT FROM AUTHOR]