Figure 2: Characterizations of the S8@CB@NNH bulky hybrids.

(a–d) S.e.m. images of S8@CB@NNH hybrids. (e–h) EDX elemental mapping records towards one typical S8@CB@NNH bulky sample, and (i) a line-scan analysis on a selected section of this hybrid product. (j) A plot recording weight losses of S8@CB@NNH products during an acid immersion treatment combined with a TG measurement. (k) XRD pattern of synthesized S8@CB@NNH powders. Scale bars, 10 μm (a,d), 1 μm (b) and 100 nm (c).