A general method to prepare metal ammonium phosphate nanoflake constructed microspheres†
Abstract
Unitary (Cu, Co, and Mg) and multinary (Cu–Co, Cu–Zn, Cu–Mg, Co–Zn, Cu–Co–Mg, Cu–Mg–Zn, and Co–Mg–Zn) metal ammonium phosphate microspheres constructed by nanoflakes growing in all directions can be prepared using almost the same recipe at 80 °C for 12 h, resulting from self-assembly of nanoflakes around the bubble-templates at high pH values.