| 光谱电化学法研究亚甲基蓝的电还原反应 |
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| 引用本文： | 王雪琳,宋立国,李关宾,唐元锋,奚正楷.光谱电化学法研究亚甲基蓝的电还原反应[J].物理化学学报,1993,9(1):89-93. |
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| 作者姓名： | 王雪琳 宋立国 李关宾 唐元锋 奚正楷 |
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| 作者单位： | Dept.of Applied Chemistry, Shandong Building Material University, Jinan 250022 |
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| 基金项目： | 中国科学院长春应用化学研究所电分析开放研究室资助项目 |
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| 摘 要： | 用极谱法研究亚甲基蓝(MB)的电极吸附过程早有报道.近几年,用光谱电化学法研究其电化学行为又引起了许多人的兴趣.但在光透薄层电极上,由于光程太短,测试溶液浓度较高,导致亚甲基蓝发生聚合,影响实验结果的准确测定.为此本文利用特制的比色皿型长光程薄层光谱电化学池,在低浓度条件下研究其在SnO_2镀膜玻璃电极上的电还原反应.
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| 关 键 词： | 长光程薄层光谱电化学 亚甲基蓝 SnO2镀膜玻璃电极 |
| 收稿时间： | 1991-09-17 |
| 修稿时间： | 1991-11-20 |
STUDY ON REDUTION OF METHYLENE BLUE BY LONG PATH-LENGTH THIN-LAYER SPECTROELECTROCHEMISTRY |
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| Wang Xuelin Song Liguo Li Guanbin Tang Yuanfeng Xi Zhengkai.STUDY ON REDUTION OF METHYLENE BLUE BY LONG PATH-LENGTH THIN-LAYER SPECTROELECTROCHEMISTRY[J].Acta Physico-Chimica Sinica,1993,9(1):89-93. |
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| Authors: | Wang Xuelin Song Liguo Li Guanbin Tang Yuanfeng Xi Zhengkai |
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| Institution: | Dept.of Applied Chemistry, Shandong Building Material University, Jinan 250022 |
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| Abstract: | The electrochemical roduction of methylene blue has been studied by long path-length thin-layer spectroelectrochemical method. It was found that the reduction of methylene blue at SnO_2 electrode is a two electron transfer reversible process. The standard potential E(?) determined was 0.286 V(vs. SCE). The acid dissociation constants for the leuco methylene blue were obtained as pK_(α1)=5.18, pK_(α1)=6.03. The mechanism of electrode reaction has been proposed. |
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| Keywords: | Long path-length thin-layer spectroelectrochemistry Methylene blue SnO_2-film glass electrode |
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