物理化学学报 >> 2005, Vol. 21 >> Issue (10): 1182-1185.doi: 10.3866/PKU.WHXB20051025

研究简报 上一篇    下一篇

铂电极上异黄樟油和胡椒醛电氧化的SERS研究

钟起玲; 张小红; 周海辉; 温祖标; 杨熊元; 黄芃; 任斌; 田中群   

  1. 江西师范大学化学化工学院, 南昌 330027; 1温州师范学院化学与材料科学学院, 温州 325003; 厦门大学化学系, 固体表面物理化学国家重点实验室, 厦门 361005
  • 收稿日期:2005-02-02 修回日期:2005-05-09 发布日期:2005-10-15
  • 通讯作者: 钟起玲 E-mail:zhqiling@163.com

In-situ SERS of Piperonal and Isosafrole Electrooxidation on Pt Electrode

ZHONG Qi-ling ; ZHANG Xiao-hong; ZHOU Hai-Hui; WEN Zu-biao; YANG Xiong-yuan; HUANG Peng; REN Bin; TIAN Zhong-qun   

  1. College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330027; 1School of Chemistry and Material Science, Wenzhou Normal College, Wenzhou 325027; 2State Key Laboratory for Physical Chemistry of Solid Surfaces, Department of Chemistry, Xiamen University, Xiamen 361005
  • Received:2005-02-02 Revised:2005-05-09 Published:2005-10-15
  • Contact: ZHONG Qi-ling E-mail:zhqiling@163.com

摘要: 采用循环伏安(CV)法和原位表面增强拉曼光谱(SERS)技术, 研究了非水体系中反应物异黄樟油和目标产物胡椒醛在粗糙铂电极上的电氧化行为, 发现胡椒醛在电位≥1.50 V时将进一步氧化, 而且从分子水平证实, 在胡椒醛的氧化电位(≥1.50 V) 下, 波长为632.8 nm的激光对胡椒醛的氧化有助催化作用. 由异黄樟油直接电氧化合成胡椒醛的电位(E)应控制在1.20 V

关键词: 循环伏安法, 胡椒醛, 异黄樟油, 电氧化, 表面增强拉曼光谱

Abstract: The electrooxidation behavior of piperonal (PI) and isosafrole (ISF) on roughened platinum in non-aqueous system was investigated by cyclic voltammogram (CV) and in-situ surface enhanced raman scattering (SERS) spectroscopy. On the one hand, PI would be oxidated to piperic acid if the potential was equal to 1.50 V or higher than 1.50 V. On the other hand, the in- situ SERS results demonatrated that the exciting laser of 632.8 nm promoted the electrooxidation of PI at the oxidation potential (≥1.50 V). As a result, the potential, which was used to directly oxidate ISF to PI should be controlled between 1.20 V and 1.50 V.

Key words: Cyclic voltammogram, Piperonal, Isosafrole, Electrooxidation, SERS