powder flakes
(99%), zirconium(IV) isopropoxide (70 wt % 1-propanol), and Pluronic
F127 were procured from Sigma-Aldrich; ethylene glycol, AgNO3, HCl, phosphate buffer, NaOH, KOH, ethylene glycol, tetraethyl orthosilicate
(TEOS), indium(III) chloride (InCl3), urea, and sodium
dodecylbenzene sulfonate (SDBS) were procured from Dae-Jung Chemical,
Korea. Deionized water (18.2 MΩ/cm) was utilized throughout
the work. All other chemicals were of investigative grade and were
used without further purification.