Fig. 4

Structure tuning and performances of SLHSPs with different amounts of MSP. a SEM images of the morphology of the liquid TEPA marble and SLHSPs with different amounts of MSP (9, 18 and 27 wt%), scale bar = 100 µm. b SEM images of the cross-section of the liquid TEPA marble and SLHSPs with different amounts of MSP. c CO₂ sorption capacity and rate for the SLHSPs containing different amounts of MSP. d CO₂ sorption capacity and rate of SLHSPs containing 9 wt% of MSP and the TEPA/MSP mixture with the same MSP. e Time-dependent CO₂ uptake profiles of the superparticles made of SBA-15 and TEPA-impregnated SBA-15. f Mechanical strength of a single SLHSP as function of the MSP amount after CO₂ sorption. g A model showing the change of interactions between silanol groups and amines after CO₂ sorption