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papawa

铜虫 (小有名气)


[交流] 【请教】酸化碳纳米管表面羧基含量的测定

请教各位大侠怎么测定酸化碳纳米管表面的羧基含量,感激不尽!
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小木材

金虫 (小有名气)


★
小木虫(金币+0.5): 给个红包,谢谢回帖
文献Chemical oxidation of multiwalled carbon nanotubes。CARBON 46 (2008) 833 – 840
3.4. Titration analysis
A direct acid–base titration technique using NaOH was per-
formed to determine the concentration of surface groups
[29]. In Table 1, the mmol of acidic oxygen-containing surface
groups per gram of CNT material are given as a function of
chemical treatment. The titration experiments demonstrate
that an increase in severity of the oxidation results in an in-
crease in the concentration of acidic surface sites, from
1.8mmol/g on pristine tubes to 3.7mmol/g on nitric acid-
treated material. These results are in full agreement with
the XPS data (Fig. 4).
13楼2012-03-13 14:02:04
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papawa

铜虫 (小有名气)


没人理我,自己顶
2楼2010-11-16 07:44:14
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271179835

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wandaohzl(金币+1):谢谢参与 2010-11-16 10:49:31
以前看过一个人说用滴定,你要是对比的话是不是可以用红外?制样时称取同样量再测
5楼2010-11-16 10:22:24
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papawa

铜虫 (小有名气)


wandaohzl:鼓励交流 2010-11-18 19:43:42
引用回帖:
Originally posted by 271179835 at 2010-11-16 10:22:24:
以前看过一个人说用滴定,你要是对比的话是不是可以用红外?制样时称取同样量再测

红外怎么可以定量比较呢?貌似只能定性地说有没有吧!
6楼2010-11-16 12:59:57
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