Figure 1

Scanning electron microscopy (SEM) image and energy dispersive X-ray (EDX) elemental distribution of nWTRs (A–C), the Cr(VI)—loaded nWTRs (B–D), Transmission electron microscopy (TEM) image of nWTRs (E) and Cr(VI)—loaded nWTRs (F).

Scanning electron microscopy (SEM) image and energy dispersive X-ray (EDX) elemental distribution of nWTRs (A–C), the Cr(VI)—loaded nWTRs (B–D), Transmission electron microscopy (TEM) image of nWTRs (E) and Cr(VI)—loaded nWTRs (F).