The Role of pH in PEG-b-PAAc Modification of Gadolinium Oxide Nanostructures for Biomedical Applications

Figure 1

Scanning electron micrographs of Gd₂O₃:Er³⁺,Yb³⁺ nanorods by hydrothermal synthesis using various precipitation agents: (a) KOH_aq. (Rods12) or ammonia: (b) 0.1 mL, (c) 0.2 mL, (d) 0.35 mL, (e) 0.5 mL, (f) 1.0 mL, (g) 2.0 mL, (h) 3.0 mL, (i) 5.0 mL. (j) Influence of mixing order, 1 mL ammonia (Rods5).

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)

(i)

(j)