A Reversed Photosynthesis‐like Process for Light‐Triggered CO₂ Capture, Release, and Conversion

Abstract

Materials for CO capture have been extensively exploited for climate governance and gas separation. However, their regeneration is facing the problems of high energy cost and secondary CO contamination. Herein, a reversed photosynthesis-like process is proposed, in which CO is absorbed in darkness while being released under light illumination. The process is likely supplementary to natural photosynthesis of plants, in which, on the contrary, CO is released during the night. Remarkably, the material used here is able to capture 9.6 wt.% CO according to its active component. Repeatable CO capture at room temperature and release under light irradiation ensures its convenient and cost-effective regeneration. Furthermore, CO released from the system is successfully converted into a stable compound in tandem with specific catalysts.

Rationally Turning the Interface Activity of Mesoporous Silicas for Preparing Pickering Foam and “Dry Water”

“…However, this adsorbent suffers from several disadvantages in transport, the corrosion of the equipment, and toxicity. 61 In the context, "dry water" could be a promising alternative for capturing CO 2 , benefiting dusting, and low corrosivity. Moreover, the finely dispersed water droplet in "dry water" could lead to enhanced adsorption kinetics as it has much higher surface-to-volume ratio than the bulk solutions.…”

“…For the capture of CO 2 , the most common adsorbents are aqueous alkanolamine solutions. However, this adsorbent suffers from several disadvantages in transport, the corrosion of the equipment, and toxicity . In the context, “dry water” could be a promising alternative for capturing CO 2 , benefiting transportation, dusting, and low corrosivity.…”

Real-space Imaging of the Multiple Halogen Bonds by Ultrahigh-resolution Scanning Probe Microscopy

“…[7][8][9] The halogen bond has recently attracted much interest, 10 while the hydrogen bond has been the most studied intermolecular interaction in the past. 11,12 Halogen bonds form mainly through the mutual interaction between halogen atoms (e.g. F, Cl, Br, I) due to the coexistence of both positive and negative potential centers at the halogen atom caused by its asymmetrical electron distribution.…”

One‐pot route to hyperbranched polyethylenimine‐dictated open cellular monolith as effective and charge‐selective adsorbent

“…Emulsion-based macroporous monoliths have elicited considerable attention due to their potential in gas adsorption, [1][2][3][4][5] separation, [6][7][8] catalysis, [9][10][11][12][13] water treatment, 14,15 and other applications 16,17 ; and have been reviewed by several research groups. [18][19][20][21][22] High internal phase emulsions (HIPEs) can be transformed into macroporous monoliths called polyHIPEs, representing a convenient method to open cellular monoliths.…”