镧系离子对甲醇电氧化的影响

IF 3.1 4区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Chemical Research in Chinese Universities Pub Date : 2008-09-01 DOI:10.1016/S1005-9040(08)60132-4

Hai-tao WANG, Yu-chun YIN, Shu-juan GAO

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引用次数: 0

摘要

将四种镧系离子(Sm3+、Yb3+、Eu3+、La3+)作为添加剂分别加入到含甲醇的水溶液中，用循环伏安法研究了它们对水溶液中甲醇电氧化的影响。结果表明，四种离子对甲醇的电氧化均有不同程度的促进作用。最佳添加剂Sm3+可使甲醇阳极氧化电流提高80%，峰电位负移约50 mV。镧系离子的促进作用被认为与这些离子的核外电子分布及其在Pt电极表面的吸附有关。

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Effects of Lanthanide Ions on Electrooxidation of Methanol

Four kinds of lanthanide ions(Sm³⁺, Yb³⁺, Eu³⁺, La³⁺) as an additive were added into the aqueous solution containing methanol, respectively, and their effects on methanol elecotrooxidation in aqueous solutions were studied with cyclic voltammetry. The results show that the four kinds of ions have promotion action upon the electrooxidation of methanol to different degrees. The best additive, Sm³⁺, can increase the anodic oxidation current of methanol by 80% and the peak potential shifted negatively about 50 mV. The promotion effects of the lanthanide ions were considered to be related to the extranuclear electron distribution of these ions and their adsorption on the Pt electrode surface.

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来源期刊

Chemical Research in Chinese Universities 化学-化学综合

CiteScore

5.30

自引率

6.50%

发文量

152

审稿时长

3.0 months

期刊介绍： The journal publishes research articles, letters/communications and reviews written by faculty members, researchers and postgraduates in universities, colleges and research institutes all over China and overseas. It reports the latest and most creative results of important fundamental research in all aspects of chemistry and of developments with significant consequences across subdisciplines. Main research areas include (but are not limited to): Organic chemistry (synthesis, characterization, and application); Inorganic chemistry (bio-inorganic chemistry, inorganic material chemistry); Analytical chemistry (especially chemometrics and the application of instrumental analysis and spectroscopy); Physical chemistry (mechanisms, catalysis, thermodynamics and dynamics); Polymer chemistry and polymer physics (mechanisms, material, catalysis, thermodynamics and dynamics); Quantum chemistry (quantum mechanical theory, quantum partition function, quantum statistical mechanics); Biochemistry; Biochemical engineering; Medicinal chemistry; Nanoscience (nanochemistry, nanomaterials).