Angle resolved XPS studies on an anodic oxide formed on Ti-Nb-Sn alloy and the photo-induced change in carbon contaminants adsorbed on its surface

Naofumi Ohtsu, Naoya Masahashi, Yoshiteru Mizukoshi

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Anodic oxide formed on a Ti-Nb-Sn alloy was analyzed by angle-resolved X-ray photoelectron spectroscopy (XPS) to determine the chemical state and composition of the uppermost surface. The anodic oxide formed on the alloy consisted of Ti-O 2 , SnO 2 , and Nb 2 O. The cationic fractions of Nb 2 O 5 and SnO 2 were lower than the atomic fractions of Nb and Sn in the alloy, and the uppermost surface contained higher concentrations of these oxides. The photo-induced change in the amount of carbon contaminants adsorbed on its surface was also analyzed by XPS combined with in situ ultraviolet (UV) light illumination. The variations in the chemical state induced by the UV light illumination were consistent with those on monolithic Ti-O 2 .

Original languageEnglish
Pages (from-to)6052-6055
Number of pages4
JournalApplied Surface Science
Volume258
Issue number16
DOIs
Publication statusPublished - 2012 Jun 1

Keywords

  • Anodic oxidation
  • Photocatalysis
  • XPS

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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