Design and preparation of effective electrodes for nitrate reduction

硝酸盐还原有效电极的设计与制备

• 批准号: 23550175
• 负责人: NAKATA Kou
• 金额: $ 3.49万
• 依托单位: Hokkaido University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23550175/
• 关键词: 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; 赤外; 貴金属; 表面増強; 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; 赤外; 貴金属; 表面増強

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.

在这项研究中，据报道了硝酸盐在PD，PT和RH电极上的吸附状态与反应性之间的关系。还讨论了通过SN修饰提高硝酸盐降低反应性的原因。 IR测量结果的结果表明，硝酸盐是反应性物种。独立的硝酸盐可以很容易地质子化，从而有助于N-O键的裂解，并进行还原。对于通过SN修饰的电极，通过吸附的硝酸盐和SN中的O之间的相互作用给出了硝酸盐还原的反应性的增加，这有助于促进N-O键的裂解和硝酸盐的还原。