Ti-Ni-O Reactive Nanocomposite Electrodeposition Using Ti Nanoparticles and Annealing

• Arakawa Tomiyuki

  Institute of Science and Technology, Kanto Gakuin University

• Watanabe Nobuaki

  Institute of Science and Technology, Kanto Gakuin University

• Haijima Yuki

  Graduate School of Engineering, Kanto Gakuin University

• Matsumura Ayaka

  Graduate School of Engineering, Kanto Gakuin University

• Koiwa Ichiro

  Graduate School of Engineering, Kanto Gakuin University College of Science and Engineering, Kanto Gakuin University

抄録

Ti-Ni-O nanocomposites were prepared by electrodeposition using Ti nanoparticles of 100 nm in diameter, and subsequent annealing at 600 °C in a vacuum of 1 × 10⁻⁴ Pa for one hour. Scanning electron microscopy revealed that clusters of 2 to 15 µm were observed on the surface of Ti-Ni-O nanocomposites. The number of clusters increased with increasing the concentration of Ti nanoparticles in electrodeposition baths. Glow discharge-optical emission spectroscopy showed that Ti concentration in Ti-Ni-O nanocomposites increased with increasing Ti nanoparticles in baths, and the Ti concentration was saturated for Ti nanoparticles of more than 20 g dm⁻³. Ti atoms of approximately 18 wt % were distributed in Ti-Ni-O nanocomposites. Furthermore, although a Ni(200) peak from Ni electrodeposits was increased by annealing, the increase in Ni(200) peak from Ti-Ni-O nanocomposites was suppressed. X-ray photoelectron spectroscopy analysis indicated that the dominant structure was changed from Ni oxides, Ni(OH)₂ and Ni to TiO₂ on the surface of Ti-Ni-O nanocomposites by annealing. In fact, Ti-Ni-O nanocomposites in methylene blue reduced the absorbance with wavelength of 664 nm after UV irradiation with the wavelength of 350 nm. It is possible that proposed reactive nanocomposites formation offers a novel TiO₂ coated Ti-Ni-O system.

収録刊行物

• Bulletin of the Chemical Society of Japan

  Bulletin of the Chemical Society of Japan 88 (8), 1128-1134, 2015

  公益社団法人 日本化学会

キーワード

• General Chemistry

詳細情報

• CRID: 1390282679117809920
• NII論文ID: 130005092046
• NII書誌ID: AA00580132
• DOI: 10.1246/bcsj.20150099
• ISSN: 13480634
• ISSN: 00092673
• NDL書誌ID: 026648262
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I026648262
• Web Site: https://academic.oup.com/bcsj/article-pdf/88/8/1128/56278141/bcsj.20150099.pdf
• 本文言語コード: en
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