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| pH值对4-氰基吡啶吸附行为影响的SERS研究 | |
| 引用本文： | 徐敏敏,杨凤珠,袁亚仙,梅金华,姚建林,沈理明,顾仁敖. pH值对4-氰基吡啶吸附行为影响的SERS研究[J]. 光散射学报, 2011, 23(4): 323-328 |
| 作者姓名： | 徐敏敏 杨凤珠 袁亚仙 梅金华 姚建林 沈理明 顾仁敖 |
| 作者单位： | 苏州大学材料与化学化工学部,苏州,215123 |
| 基金项目： | 国家自然科学基金(20973120,21073128,2103300) |
| 摘 要： | 采用现场表面增强拉曼光谱(SERS)研究了4-氰基吡啶在不同pH值下铂电极上的吸附行为.结果表明,pH对4-氰基吡啶的吸附原子没有影响,均以吡啶环上的氮吸附在电极表面,但分子的取向不同.酸性条件下,4-氰基吡啶在正于0.6 V(SCE)的电位区间倾斜吸附,在0.6V到-0.2V以相对垂直方式吸附,而在负于-0.4V的电... |
| 关 键 词： | 4-氰基吡啶 吸附 pH值 表面增强拉曼光谱 |
| 收稿时间： | 2011-06-30 |
pH Dependent Adsorption of 4-cyanopyridine at the Pt Electrode Probed by Surface-enhanced Raman Spectroscopy |
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| XU Min-min , YANG Feng-zhu , YUAN Ya-xian , MEI Jin-hua , YAO Jian-lin , SHEN Li-ming , GU Ren-ao. pH Dependent Adsorption of 4-cyanopyridine at the Pt Electrode Probed by Surface-enhanced Raman Spectroscopy[J]. Chinese Journal of Light Scattering, 2011, 23(4): 323-328 | |
| Authors: | XU Min-min YANG Feng-zhu YUAN Ya-xian MEI Jin-hua YAO Jian-lin SHEN Li-ming GU Ren-ao |
| Affiliation: | (College of Chemistry,Chemical Engineering and Materials Science,Soochow University,Suzhou 215123,China) |
| Abstract: | In situ surface enhanced Raman spectroscopy(SERS) was employed to investigate the adsorption behavior of 4-cyanopyridine on the Pt electrode at different pH values.It was concluded that 4-cyanopyridine adsorbed on the Pt surface via N atom of pyridine ring,which was independent of pH values.However,the molecular orientation was greatly influenced by various pH values.The tilted adsorption configuration is favored in the potential positive than 0.6 V in acidic solution.It converted to a vertical mode from 0.6 V to-0.2 V.When the potential is moved negatively than-0.4 V,the parallel mode is dominant.In the neutral condition,the orientation would switch from vertical to tilted at ca.0 V.However,it kept vertical mode nearly constant in the alkaline solution during the whole potential region. |
| Keywords: | 4-cyanopyridine adsorption pH values SERS |
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