For the good performance of apatite-based materials in the removal of dyes and their environment-friendly advantage, five kinds of apatite microparticles of MP (M = Ba, Ca, Cu, Sr, Ag; P = PO 4 3- , HPO 4 2- ) were synthesized by a simple precipitation method and their photo-catalytic properties were invested. Better performance in the decolorization of methyl orange (MO) under the assistance of H 2 O 2 than that of TiO 2 were obtained for all the MPs. The photo-catalytic activity was mainly affected by surface area, energy band, impurity, crystallinity and crystal structure. The DFT calculation results demonstrated that the 2p of O and 3p of P in PO 4 3- played the main role in the photo-catalytic process. This work would be helpful to design and synthesize low cost apatite materials with good photo-catalytic performance.
Bibliographical noteFunding Information:
This work was financially supported by the Youth Science and Technology Innovation Fund of College of Science, Nanjing Agricultural University, National Science Foundation of China (No. 20975107 , 60977048 , Y10845YM10 ).