Liquid marble-derived solid-liquid hybrid superparticles for CO2 capture

Abstract

The design of effective CO 2 capture materials is an ongoing challenge. Here we report a concept to overcome current limitations associated with both liquid and solid CO 2 capture materials by exploiting a solid-liquid hybrid superparticle (SLHSP). The fabrication of SLHSP involves assembly of hydrophobic silica nanoparticles on the liquid marble surface, and co-assembly of hydrophilic silica nanoparticles and tetraethylenepentamine within the interior of the liquid marble. The strong interfacial adsorption force and the strong interactions between amine and silica are identified to be key elements for high robustness. The developed SLHSPs exhibit excellent CO 2 sorption capacity, high sorption rate, long-term stability and reduced amine loss in industrially preferred fixed bed setups. The outstanding performances are attributed to the unique structure which hierarchically organizes the liquid and solid at microscales.

Supraparticles for Sustainability

“…While still providing very large surface areas due to their inner porosity (emergence), [ 39,40 ] SPs can provide sizes in the large micrometer (to sometimes even millimeter) scale and can thus be directly utilized for gas adsorption processes in common industrially used fixed or fluidized bed reactors. [ 41,42 ] Furthermore, their larger sizes compared to NPs also enable a better incorporation without aggregation into filters and a longer sustainment in those. [ 43 ]…”

“…This system exhibited a very high sorption capacity and rate, as well as long‐term stability with reduced amine loss in fixed bed reactors (Figure 2b2). [ 41 ] Another SP system addresses the pollution of air by electromagnetic waves, which are emitted by electronic devices and harm human health. [ 44 ] Carbon‐coated iron oxide NPs (Fe 3 O 4 @C) assembled into larger entities efficiently absorb these waves due to their supraparticulate structure (Figure 2c).…”

“…(b1,b2) Reproduced with permission. [ 41 ] Copyright 2019, Springer Nature AG & Co. KGaA. (c1,c2) Reproduced with permission.…”

Pickering emulsions for food and drinks

“…(d) In addition, although these and true Pickering emulsions may show limited coalescence and Ostwald ripening in the absence of shear, shear can be quite disruptive to Pickering emulsions. Rong et al [15] have also shown that if the fluid regions either side of the interface of a droplet in a shear field can distort even a fraction, this concentrates all the transmitted stress between the adsorbed particles to a very small number of particles, such that can easily exceed the desorption energy. This possibly explains the relatively poor resistance of Pickering emulsions to shear, although this has not been studied widely.…”

Influence of water evaporation/absorption on the stability of glycerol–water marbles

“…[23][24][25][26][27] Given the exibility in the choice of solid particles and liquids to fabricate liquid marbles, liquid marbles are emerging as a versatile platform for a wide range of applications in miniature reactors, microuidics, drug transport, gas sensing, and biomedical and genetic analyses. [2][3][4][5][6] As a versatile and cost-effective miniature reactor providing a well-conned microenvironment, [28][29][30][31][32] progress in miniaturized chemical and biological processes using liquid marbles has been reported recently. The miniaturized synthesis of graphene/ Ag nanocomposites was demonstrated using liquid marbles.…”