Acta Phys. -Chim. Sin. ›› 1990, Vol. 6 ›› Issue (05): 629-632.doi: 10.3866/PKU.WHXB19900522

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XPS Insvestigation of Hydrogen Bond in Hydroxyapatite

Zhou Jian-Lue; Chen Shu-Zi; Zuo Chang-Ming; Ji Xiao-Jiang   

  1. Analytical ahd Testing Centre, Sichuan University
  • Received:1989-02-22 Revised:1990-03-12 Published:1990-10-15
  • Contact: Zhou Jian-Lue

Abstract: Several calcium orthophosphates (tricalcium phosphate, monocalcium dihydropho-sphate, dicalcium hydrophosphate, and hydroxyapatite) are characterized by XPS and IR method. The P2p electron binding energies follow the order Ca(H_2PO_4)_2>CaHPO_4>Ca_(10)(OH)_2(PO_4)_6>Ca_3(PO_4)_2. It is expounded that there is hydrogen bonding of (OH...OPO_3) between the OH~- ion and the neighbour oxygen of the phosphate in hydroxyapatite.