“…Basic lutetium carbonate precursor was synthesized by a modified precipitation (NH4OH to NH4HCO3 with 1:4 molar ratio) method based on our previous work [12,15,16]. As-prepared colloidal solution was divided into 3 parts, and the 10 M NaOH solution was used as the mineralizer to adjust the final pH values (pH 10, 12, 14, respectively).…”