Corrosion Behavior and Bacterial Viability on Different Surface States of Copper

• Shimabukuro Masaya

  Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University Department of Biomaterials, Faculty of Dental Science, Kyusyu University

• Manaka Tomoyo

  Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University

• Tsutsumi Yusuke

  Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University Research Center for Structural Materials, National Institute for Materials Science (NIMS)

• Nozaki Kosuke

  Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University

• Chen Peng

  Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University

• Ashida Maki

  Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University

• Nagai Akiko

  Department of Anatomy, School of Dentistry, Aichi Gakuin University

• Hanawa Takao

  Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University

抄録

This study investigates the interaction between E. coli bacteria and various surface states of Cu. Pure Cu was oxidized at 298 K, 673 K, and 1273 K, and its surface chemical state was characterized using X-ray photoelectron spectroscopy. The oxidized specimens were immersed in both bacteria-free and bacteria-containing solutions, and the release of Cu ions from each specimen was evaluated. As a result, the specimens, which existed as mainly Cu⁰ or Cu⁺ on the surface, exhibited the same corrosion behavior and promoted the elution of Cu ions due to the presence of E. coli in the immersion solution. In contrast, the release of Cu ions from the specimen that existed mainly as Cu²⁺ did not change in the presence of bacteria. According to the XPS analyses before and after immersion in bacteria-free and bacteria-containing solutions, the generation of Cu²⁺ on the surface was inhibited by the presence of E. coli, and promoted Cu ion elution. This study proposes that the specific corrosion behavior of Cu due to bacteria is beneficial for developing its antibacterial properties.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 61 (6), 1143-1148, 2020-06-01

  公益社団法人 日本金属学会

キーワード

• x-ray photoelectron spectroscopy
• copper
• copper oxide
• antibacterial
• biofilms
• biomaterials
• microbial corrosion

詳細情報

• CRID: 1390848250112580992
• NII論文ID: 130007846110
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.mt-m2020008
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 030434295
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I030434295
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/61/6/61_MT-M2020008/_pdf
• 本文言語コード: en
• データソース種別:
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  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可