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fengxing915

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[求助] 幫忙翻一下，謝謝了

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

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【答案】應(yīng)助回帖

★
愛與雨下(金幣+1): 2011-11-21 20:30:22
fengxing915(金幣+5, 翻譯EPI+1): 翻得太好了，哈哈，謝謝了啊。。。。 2011-11-23 10:43:23

希望能幫助到樓主：

Nafion膜電極的制備方法是將0.5 wt%所需體積的儲備液轉(zhuǎn)移到玻碳電極上，并在室溫下等待溶劑蒸發(fā)。石英微天平上的金涂層石英晶體通過以前所述的旋涂法制備，使用的溶液是含有10%水的2.5 wt%Nafion儲備液。Nafion涂層中的Cu(bpy)含量通過分光光度法或者原子吸收光譜測定，首先將沉積在鉑電極表面的涂層置于DMF中，在室溫下超聲幾分鐘后溶解。將所得到的溶液通過紫外和原子吸收光譜和Cu(bpy)的DMF標(biāo)準(zhǔn)溶液測得的校準(zhǔn)曲線加以分析。bpy配體在284 nm處的紫外吸收非常強(qiáng)。而同一溶液中的Cu的濃度可使用原子吸收光譜測定，測定過程中的校準(zhǔn)數(shù)據(jù)需要與284nm處的紫外吸收數(shù)據(jù)相關(guān)。

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2樓2011-11-21 19:21:55

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