Critical point (CP) in a titration curve to quantify carboxylic, lactonic, and phenolic groups on multi-walled carbon nanotube (CNT) and Vulcan carbon (VC). Titration technique used was Boehm type and tipping point measurement from titration curve was done by second derivative method. The calculation functional groups on nanocarbons (NCs) presents lowest uncertainty previously published. An order of [Formula: see text]meq/g is the precision of the values obtained, one order of magnitude below reported. Both NCs display a high quantity of carboxylic groups created after being treated with regard to the other functional groups generated, mainly for functionalized Vulcan carbon VC-F.

中文翻译：

---

BOEHM 滴定法测定纳米碳同素异形体的表面功能

滴定曲线中的临界点 (CP)，用于量化多壁碳纳米管 (CNT) 和 Vulcan 碳 (VC) 上的羧基、内酯和酚基。使用的滴定技术是Boehm型，滴定曲线的临界点测量是通过二阶导数法完成的。纳米碳 (NCs) 上的计算官能团呈现出先前公布的最低不确定性。[公式：见正文]meq/g 的一个数量级是所获得值的精度，低于报告的一个数量级。两种 NC 都显示出在处理后产生的大量羧基，相对于产生的其他官能团，主要用于功能化的 Vulcan 碳 VC-F。