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fengxing915木虫 (小有名气)
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[求助]
帮忙翻一下，谢谢了
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Coatings of Nafion on glassy carbon electrodes were prepared by transferring the desired volume of the 0.5 wt.% stock solution to the electrode and allowing the solvent to evaporate at room temperature. Nafion coatings on the gold-coated quartz crystals of the quartz crystal microbalance were prepared by a previously described spin-coating procedure using a 2.5 wt.% stock solution of Nafion containing 10% H20 . Spectrophotometric or atomic absorption analyses of Nafion coatings containing Cu(bpy) were carried out with coatings that had been deposited on a platinum flag electrode from which they could be dissolved by sonication for a few minutes in DMF at room temperature. The resulting solutions were analyzed by UV and atomic absorption spectrophotometry using calibration curves pre- pared from standard solutions of Cu(bpy) in DMF. The UV absorption was measured at 284 nm where the bpy ligand is strongly absorbing. Analysis of the same solutions for Cu by atomic absorption provided the calibration data needed to relate the absorption at 284 nm to the concentration of Cu in the solution. [ Last edited by fengxing915 on 2011-11-21 at 16:38 ] |
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xiaohanhan2007 
捐助贵宾 (小有名气)
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爱与雨下(金币+1): 2011-11-21 20:30:22
fengxing915(金币+5, 翻译EPI+1): 翻得太好了，哈哈，谢谢了啊。。。。 2011-11-23 10:43:23
爱与雨下(金币+1): 2011-11-21 20:30:22
fengxing915(金币+5, 翻译EPI+1): 翻得太好了，哈哈，谢谢了啊。。。。 2011-11-23 10:43:23
希望能帮助到楼主： Nafion膜电极的制备方法是将0.5 wt%所需体积的储备液转移到玻碳电极上，并在室温下等待溶剂蒸发。石英微天平上的金涂层石英晶体通过以前所述的旋涂法制备，使用的溶液是含有10%水的2.5 wt%Nafion储备液。Nafion涂层中的Cu(bpy)含量通过分光光度法或者原子吸收光谱测定，首先将沉积在铂电极表面的涂层置于DMF中，在室温下超声几分钟后溶解。将所得到的溶液通过紫外和原子吸收光谱和Cu(bpy)的DMF标准溶液测得的校准曲线加以分析。bpy配体在284 nm处的紫外吸收非常强。而同一溶液中的Cu的浓度可使用原子吸收光谱测定，测定过程中的校准数据需要与284nm处的紫外吸收数据相关。 |
2楼2011-11-21 19:21:55