2013 Fiscal Year Final Research Report
Design and preparation of effective electrodes for nitrate reduction
| Project/Area Number |
23550175
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Environmental chemistry
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| Research Institution | Hokkaido University |
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Principal Investigator |
NAKATA Kou 北海道大学, 地球環境科学研究科(研究院), 助教 (90250414)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 硝酸 / 還元 / 電気化学 / 赤外分光法 / 合金電極 / パラジウム / 白金 / ロジウム |
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| Research Abstract |
In this study, the relationship between the adsorption states of nitrate on Pd, Pt, and Rh electrodes and the reactivity was reported. The reason for the increase of reactivity of nitrate reduction by Sn modification was also discussed. The results from IR measurements showed that unidentate nitrate was the reactive species. The unidentate nitrate can be easily protonated, which facilitates the cleavage of N-O bonds, and the reduction is carried out. For the electrode modified by Sn, the increase of reactivity of nitrate reduction is given by the interaction between O in the adsorbed nitrate and Sn, which facilitates the cleavage of N-O bonds and the reduction of nitrate.
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