| 不同介质中甲醛在Aucore@Ptshell/Pt电极上氧化的原位SERS研究 |
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| 引用本文： | 饶贵仕,章磊,柯慧贤,钟起玲,任斌,田中群. 不同介质中甲醛在Aucore@Ptshell/Pt电极上氧化的原位SERS研究[J]. 高等学校化学学报, 2009, 30(6): 1205 |
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| 作者姓名： | 饶贵仕 章磊 柯慧贤 钟起玲 任斌 田中群 |
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| 作者单位： | 江西师范大学化学化工学院,南昌330022;江西省安全生产科学技术研究中心,南昌330046;江西师范大学化学化工学院,南昌,330022;厦门大学化学化工学院,固体表面物理化学国家重点实验室,厦门361005 |
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| 基金项目： | 国家自然科学基金，厦门大学固体表面物理化学国家重点实验室基金，江西省自然科学基金 |
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| 摘 要： | 应用化学还原法合成了Aucore@Ptshell纳米粒子, 并用扫描电子显微镜(SEM)和能量色散光谱(EDS)对其进行了表征; 采用电化学原位表面增强拉曼散射(SERS)光谱技术研究了不同介质中甲醛在Aucore@Ptshell/Pt电极上的电催化氧化行为, 获得了不同介质中甲醛在Aucore@Ptshell/Pt电极上电催化氧化行为的原位SERS谱. 研究结果表明, 不论在酸性、中性还是碱性介质中, 甲醛均能在Aucore@Ptshell/Pt电极上自发氧化解离出强吸附中间体CO, 只是在碱性介质中桥式吸附CO的比例明显增大, 且桥式吸附比线形吸附CO更易被氧化, 使CO在碱性介质中基本氧化完毕的电位比在中性及酸性介质中提前了约950 mV. 分子水平的研究结果表明, CO和甲醛在碱性介质中比在中性和酸性介质中更易被氧化.
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| 关 键 词： | 表面增强拉曼散射光谱 甲醛 电催化 氧化 Aucore@Ptshell/Pt电极 |
| 收稿时间： | 2008-08-28 |
In situ Surface-Enhanced Raman Spectroscopic Investigation of Formaldehyde Oxidation on Au_(core)@Pt_(shell) Nanoparticles Coated Platinum Electrode in Different Media |
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| RAO Gui-Shi,ZHANG Lei,KE Hui-Xian,ZHONG Qi-Ling,REN Bin,TIAN Zhong-Qun. In situ Surface-Enhanced Raman Spectroscopic Investigation of Formaldehyde Oxidation on Au_(core)@Pt_(shell) Nanoparticles Coated Platinum Electrode in Different Media[J]. Chemical Research In Chinese Universities, 2009, 30(6): 1205 |
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| Authors: | RAO Gui-Shi ZHANG Lei KE Hui-Xian ZHONG Qi-Ling REN Bin TIAN Zhong-Qun |
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| Affiliation: | 1. College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China;2. Jiangxi Institute of Safety Science and Technology, Nanchang 330046, China;3. State Key Laboratory for Physical Chemistry of Solid Surfaces, College of Chemistry and Chemistry Engineering, Xiamen University, Xiamen 361005, China |
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| Abstract: | Aucore@Ptshell nanoparticles were synthesized by chemical reduction method.The samples were cha-racterized by scanning electron microscope(SEM) and energy dispersive spectroscopy(EDS).In situ surface-enhanced Raman spectroscopy(SERS) was utilized to investigate the electro-oxidation behavior of formaldehyde in different media adsorbed on Aucore@Ptshell nanoparticles coated platinum electrode.Surface-enhanced Raman scattering spectra with high quality were acquired.The results show that formaldehyde can diss... |
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| Keywords: | Surface-enhanced Raman spectroscopy(SERS) Formaldehyde Electrocatalytic Oxidation Aucore@Ptshell /Pt electrode |
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