Online ISSN : 2186-2451
Print ISSN : 1344-3542
ISSN-L : 1344-3542
Volume 80 , Issue 7
Showing 1-14 articles out of 14 articles from the selected issue
  • Susumu KUWABATA, Tsukasa TORIMOTO, Akihito IMANISHI, Tetsuya TSUDA
    2012 Volume 80 Issue 7 Pages 498-503
    Published: July 05, 2012
    Released: July 05, 2012
    Room temperature ionic liquid (RTIL) possessing negligible vapor pressure can be put in a vacuum chamber without vaporization. This fact enables to make wet condition even under vacuum condition although it is absolute common sense that vacuum conditions must be dry world. Based on this attracting fact, we have attempted to introduce RTILs to several kinds of instruments, which need to keep vacuum condition in their sample chamber for analyses and material productions. Introduction of RTIL to analyses requiring vacuum conditions including electron microscopy and energy dispersed X-ray fluorescence spectroscopy allows us to observe samples with wet condition and chemical reactions and to analyze these samples. Metal sputtering and quantum beam instruments are exploitable for production of metal nanoparticles. The resulting metal nanoparticles are quite stable and they keep their electrocatalytic activities.
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  • Siwen WANG, Haolong XU, Peidong YAO, Xueming CHEN
    2012 Volume 80 Issue 7 Pages 507-511
    Published: July 05, 2012
    Released: July 05, 2012
    Seawater can be used as an electrolyte for Cl2 evolution, and proper selection of electrode materials is of great importance. In this paper, a new type of dimensionally stable anodes, Ti/RuO2-IrO2-Sb2O5-SnO2, was investigated for Cl2 evolution from seawater. The physicochemical and electrochemical properties were examined, and the electrocatalytic activity for Cl2 evolution was measured under different conditions. It was shown that the RuO2-IrO2-Sb2O5-SnO2 coating was compact in microstructure. The current efficiency was 71.2–86.7%, depending on the operational conditions. The anodes were predicted to be able to work effectively for over 6 years at a current density of 1500 A m−2 for seawater electrolysis.
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