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  • 1 North Shore College of SONY Institute Atsugi Kanagawa 243-8501 Japan Atsugi Kanagawa 243-8501 Japan
  • | 2 Tokyo Metropolitan University 1-1 Minami-Osawa Hachioji Tokyo 192-0397 Japan 1-1 Minami-Osawa Hachioji Tokyo 192-0397 Japan
  • | 3 Japan Fine Ceramics Center 4-1 Rokuno 2-chome Atsuta Nagoya, Aichi 456-8587 Japan 4-1 Rokuno 2-chome Atsuta Nagoya, Aichi 456-8587 Japan
  • | 4 North Shore College of SONY Institute Atsugi Kanagawa 243-8501 Japan Kanagawa 243-8501 Japan
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Abstract  

Nanoporous alumina membrane prepared by anodic oxidation using sulfuric acid electrolyte was subjected to TG-DTA and X-ray Photoelectron Spectroscopy (XPS or ESCA) to further study the distribution of sulfur. In XPS study, Ar+ ion bombardment was performed on the sample to etch the surface at a rate of 3 nm min-1. As a result, sulfur was found to be concentrated within a depth of 3nm from the surface. The S content of the surface was found to be 2.70.5 wt%, and that at a depth of ca. 3 nm and ca. 10 nm was found to be as low as about 0.60.11 wt% (5.371.0 wt%→ 1.260.2wt% SO2). In TG-DTA, the mass loss of 7.3% was in fair agreement with that calculated on XPS results (7.11.2%).

Manuscript Submission: HERE

  • Impact Factor (2019): 2.731
  • Scimago Journal Rank (2019): 0.415
  • SJR Hirsch-Index (2019): 87
  • SJR Quartile Score (2019): Q3 Condensed Matter Physics
  • SJR Quartile Score (2019): Q3 Physical and Theoretical Chemistry
  • Impact Factor (2018): 2.471
  • Scimago Journal Rank (2018): 0.634
  • SJR Hirsch-Index (2018): 78
  • SJR Quartile Score (2018): Q2 Condensed Matter Physics
  • SJR Quartile Score (2018): Q2 Physical and Theoretical Chemistry

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation
1969
Volumes
per Year
4
Issues
per Year
24
Founder Akadémiai Kiadó
Founder's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address
H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher
Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)