Preparation of antibacterial ZnO-CaO-P2O5-Nb2O5 invert glasses

Sungho Lee, Hirotaka Uehara, Anthony L.B. Maçon, Hirotaka Maeda, Akiko Obata, Kyosuke Ueda, Takayuki Narushima, Toshihiro Kasuga

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


ZnO-CaO-P2O5-Nb2O5 invert glasses, with ZnO substituted for CaO, were successfully prepared using a melt-quenching method. Their structures, dissolution behaviors, and antibacterial abilities were evaluated. Niobate switched its role of network former to modifier with increasing ZnO content, as Zn2+ ions preferentially coordinated with phosphate groups. In parallel, with increasing content of ZnO in the glasses, P-O-Zn bonds were formed, which crosslinked phosphate groups with ZnO acting as a network former. As a result, the glass-forming ability and chemical durability of the glasses were improved. The glasses showed antibacterial ability to gram-positive and -negative bacteria.

Original languageEnglish
Pages (from-to)2072-2076
Number of pages5
JournalMaterials Transactions
Issue number12
Publication statusPublished - 2016


  • Antibacterial ability
  • Biomaterial
  • Niobium
  • Phosphate glass
  • Zinc

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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