Surface morphologies on the addition of TiO2 to calcium phosphate bio-glass

Wen C. Say, Chin C. Yeh, Chih Hwa Chen

Research output: Contribution to journalArticlepeer-review


Titanium dioxide is added into calcium phosphate bio-glass (CPG) to have crystalline phases of titanium phosphoric (TiP2O7) and calcium phosphoric (CaP2O7) on its surfaces. The bio-glass synthesis with the addition of titanium dioxide herein is denoted as TCPG. To elucidate their surface morphologies, both specimens of CPG and TCPG were immersed in Hanks' solution for two days before soaking in the mixed solutions of (NH4)2HPO4 and Ca(NO3) 2 at 70°. Crystalline layers of titanium phosphoric were observed on the surfaces of TCPG from immersing in Hanks' solution. After which calcium pyrophosphate appeared on the second step of soaking process from the calcium ion contained solutions. Due to the absence of crystalline phases on the surfaces of CPG specimen, it can be deduced that the addition of titania (TiO2) causes the hydroxyapatite formation on the surface of bio-glass.

Original languageEnglish
Pages (from-to)389-394
Number of pages6
JournalBiomedical Engineering - Applications, Basis and Communications
Issue number6
Publication statusPublished - Dec 2007
Externally publishedYes


  • Bio-glass
  • Crystalline phases
  • Hanks' solution
  • Immersion
  • Surface morphologies

ASJC Scopus subject areas

  • Biophysics
  • Bioengineering


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