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SAXS profiles log(I) vs. lo(Q) for (a) Si-GHG and (b) Si@C-GHG composite samples obtained by in-situ hydrothermal synthesis samples compared with the SAXS profile for the reference GHG graphene hydrogel. An insight into the scattering in the high Q range is provided by I(Q)4 vs. Q plots for both Si-GHG (c) and Si@C-GHG (d) samples that highlight the contribution from individual Si and Si@C nanoparticles to the overall scattering.
