Fig. 2
From: Carbon-supported ZnO materials for sulfur capturing in supercritical water
(a,b) SEM micrographs (increasing order of magnifications) of ZnO/C composites prepared by supercritical water impregnation at 668 K, 250 bar; (c–e) elemental mapping of C, Zn and O; 1D ZnO needle crystals are formed in the interfibrillar voids of C support.
