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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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复合聚合物修饰的粉末微电极及其对亚硝酸根还原的催化
, PP. 146-150
Keywords: 微电极,修饰电极,亚硝酸根还原
Abstract:
本论文简述用Nafion_Os(bpy)32+/PVP复合膜修饰的乙炔黑粉末微电极,以亚硝酸根还原为模型反应,实现从复合修饰及扩大电极比表面两方面改善电极性能的思路.结果表明,它同时显示Nafion_Os(bpy)32+/PVP修饰电极对NO2-及NO+双重富集并再生活性粒子NO+、防止中继体流失、加速膜中中继体传输、改变反应途径等复合修饰电极的多种功能以及粉末微电极的高比表面、高液相传质速度以及薄层效应的特性.与平面修饰电极及裸粉末微电极相比,它明显提高了酸性溶液中亚硝酸根还原的可逆性、呈数量级地提高稳态极限电流密度以及NO2-的检测指标.
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