Figure 7
Sequestration of CO2 into CaCO3 by the dc-ngCA-silk hydrogel. (a) CO2-removal efficiency of the dc-ngCA-silk hydrogel (**P<0.01, ***P<0.005; unpaired t-test). (b) XRD and (c) SEM analyses of the CaCO3 precipitated by the dc-ngCA-silk hydrogel. V, vaterite.
