Sustainable CO2 management through integrated CO2 capture and conversion

Integrated CO2 capture and utilization: a review of the synergistic effects of dual function materials

“…In contrast with unintegrated systems where CO 2 capture and electrochemical conversion occur in separate solutions, the integrated electrochemical process in this type of ICCU avoids the technical bottleneck of CO 2 -gas-fed electrolyzers and eliminates the need to regenerate the capture media and release CO 2 . 22 ICCU via electrocatalysis is conducted at moderate temperatures and has a higher energy efficiency, whereas the thermochemical ICCU process works at a higher temperature (approximately 300–1000 °C, depending on the reaction type). However, the CO 2 electrochemical conversion is still on the laboratory scale limited by the stability of catalysts, the diversity of products, and the low catalytic efficiency ( e.g.…”

“…Previously published reviews have assessed the current state, challenges, and future perspectives of ICCU via electrochemical conversion. 22,24–26…”

“…32 An improved understanding of the interactions and synergistic effects of the catalysts, adsorbents, and supports is thus crucial, as it will facilitate the development of rational high-performance DFMs. 22…”

“…Several recent reviews have summarized the progress that has been made in state-of-the-art ICCU technologies from the perspective of the fundamentals, materials, system, process parameters, industrial applications, and economics. 22,24,33–36 Tsiotsias et al 33 summarized alkali and alkaline earth metals that could potentially be utilized as promoters for CO 2 methanation, as well as those that could be utilized as active sorbents in an ICCU-methanation system. Bravo et al 34 provided an overview of the different configurations that combine CO 2 capture and catalytic conversion to methane, including two solids in two units, two solids in one unit, and one bifunctional solid in one unit.…”

Novel benzimidazole-linked microporous conjugated polymers for highly selective adsorption and photocatalytic reduction of diluted CO2

“…7,8 The high cost of the CO 2 condensation and purification technology makes the utilization and conversion of pure or high-concentration CO 2 unfavorable. 9–13 From the perspective of practical applications, the exploration of efficient photocatalysts that can directly utilize low-concentration CO 2 from gas mixtures will provide a great deal of real benefits, such as simplified procedures, energy-saving and low-cost, but this field is still in the initial stage. 14–16 To date, a few inorganic and compositing materials have been explored for the reduction of low-content CO 2 , such as metal organic frameworks (MOFs), 17–20 coordination compounds, 21–24 and metal oxides and their composites, 25–28 which suffer from complicated preparation, low durability and unsatisfactory selectivity, as well as potential environmental risks caused by harmful metals such as Co, W, and Ni.…”