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Keywords:

  • ferric phosphate hydroxide;
  • hydrothermal synthesis;
  • methylene blue;
  • microcrystals;
  • photocatalysis

Abstract

Fe4(OH)3(PO4)3 microcrystals are successfully synthesized by a simple hydrothermal method. Due to a possible self-etching mechanism, different morphologies of Fe4(OH)3(PO4)3 microcrystals are obtained. Several reactions with different temperatures and times are performed to confirm the supposed self-etching mechanism. Moreover, as a result of their different micro/nanostructures, these microcrystals present different photocatalytic activities for visible-light-driven photodegragadation of methylene blue.