含鈷脂質及黏土修飾電極製備與應用：電催化分解含鹵化合物
Abstract
有鑑於維生素B12對有機鹵化物的電催化分解潛力，本論文尋求維生素B12結構類似物，以模擬其在分解有機鹵化合物，如2,3-雙溴丁烷、1,2-雙溴丁烷、1,2-雙溴環己烷、和二氯丙酸鈉方面的應用潛力。實驗結果顯示：若以玻璃碳電極對2,3-雙溴丁烷進行還原分解時，須給予-1.6 V vs. SCE的電壓始能達到分解目的，然若在溶液中或在電極上加入含鈷化合物，如(1R,2R)-(-)-1,2-cyclohexanediamino-N-N'-bis(3,5-di-t-butylsalicylidene)Cobalt (IΠ)，則可於較正電位將2,3-雙溴丁烷還原分解成低毒性的產物：烯與溴離子。我們也藉由紅外線吸收光譜與電化學交流阻抗進行分析，其結果均證實含鈷化合物確實具有催化分解有機鹵化物的應用潛力。
The reduction of organic dibromides, such as 2,3-dibromobutane (2,3-DBB), 1,2-dibromobutane (1,2-DBB) and 1,2-dibromocyclohexane, exists with cathodic barrier, which can only be reduced at a potential more negative than -1.6 V vs. SCE with bare carbon electrodes in most aprotic media. While, as cobalt complexes such as (1R,2R)-(-)-1,2-cyclohexanediamino-N-N'-bis(3,5-di-t-butylsalicylidene) Cobalt (III) were incorporated, the barrier could be significantly reduced. Organic dibromides or dichlorides could thus be decomposed into less toxic products: alkenes and the associated halide ions. IR spectral analysis and EIS analysis confirmed these results, suggesting that cobalt complexes are promising green catalysts for the degradation of organic halogen wastes.
The reduction of organic dibromides, such as 2,3-dibromobutane (2,3-DBB), 1,2-dibromobutane (1,2-DBB) and 1,2-dibromocyclohexane, exists with cathodic barrier, which can only be reduced at a potential more negative than -1.6 V vs. SCE with bare carbon electrodes in most aprotic media. While, as cobalt complexes such as (1R,2R)-(-)-1,2-cyclohexanediamino-N-N'-bis(3,5-di-t-butylsalicylidene) Cobalt (III) were incorporated, the barrier could be significantly reduced. Organic dibromides or dichlorides could thus be decomposed into less toxic products: alkenes and the associated halide ions. IR spectral analysis and EIS analysis confirmed these results, suggesting that cobalt complexes are promising green catalysts for the degradation of organic halogen wastes.
Description
Keywords
脂質, 電極修飾, 鈷錯合物, Lipid, modified electrode, cobalt complex