Fig. 4From: Engineering of bioactive metal sulfide nanomaterials for cancer therapy(Reprinted with permission from Ref. [21]. Copyright 2020 Royal Society of Chemistry)Schematic illustration showing the synthesis process of ZnS@SiO2 fibres by hard template-assisted approach (a). SEM image of as-spun SiO2 (b) and ZnS@SiO2 fibres (c). TEM image of ZnS@SiO2 fibres (d)Â Back to article page