A Carbon‐Negative Hydrogen Production Strategy: CO2 Selective Capture with H2 Production. Issue 15 (24th January 2023)

• Record Type: Journal Article
• Authors: Gao, Mingyu; Fan, Jiaxuan; Li, Xintao; Wang, Qian; Li, Dianqing; Feng, Junting; Duan, Xue
• Is Part Of: Angewandte Chemie international edition. Volume 62:Issue 15(2023)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2023-01-24
• Subjects: Carbon Capture -- Carbon-Negative -- Hydrogen Production -- Process Coupling -- Reaction-Driven Mechanism; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.202216527
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: We reported a strategy of carbon‐negative H2 production in which CO2 capture was coupled with H2 evolution at ambient temperature and pressure. For this purpose, carbonate‐type Cu x Mg y Fe z layered double hydroxide (LDH) was preciously constructed, and then a photocatalysis reaction of interlayer CO3 2− reduction with glycerol oxidation was performed as driving force to induce the electron storage on LDH layers. With the participation of pre‐stored electrons, CO2 was captured to recover interlayer CO3 2− in presence of H2 O, accompanied with equivalent H2 production. During photocatalysis reaction, Cu0.6 Mg1.4 Fe1 exhibited a decent CO evolution amount of 1.63 mmol g −1 and dihydroxyacetone yield of 3.81 mmol g −1 . In carbon‐negative H2 production process, it showed an exciting CO2 capture quantity of 1.61 mmol g −1 and H2 yield of 1.44 mmol g −1 . Besides, this system possessed stable operation capability under simulated flu gas condition with negligible performance loss, exhibiting application prospect. Abstract : A strategy for carbon‐negative H2 production in which CO2 capture was coupled with H2 evolution at ambient temperature and pressure is reported. A universal photocatalysis reaction was adopted as driving force and carbonate‐intercalated layered double hydroxides (LDHs) with electron storage/release function were employed as adsorption catalysts.