Choma J, Burakiewicz-Mortka W, Jaroniec M, Li Z, Klinik J
Institute of Chemistry, Military Technical Academy, Warsaw, 01-489, Poland
J Colloid Interface Sci. 1999 Jun 15;214(2):438-446. doi: 10.1006/jcis.1999.6246.
A series of active carbons and carbon blacks was oxidized with various oxidizing agents such as hydrogen peroxide, perchloric acid, and nitric acid. Their surface and structural properties were evaluated by use of nitrogen and water vapor adsorption isotherms, as well as high-resolution thermogravimetry. A comparative analysis of differential thermogravimetric curves and adsorption isotherms of nitrogen and water vapor for the samples studied showed that the surface properties of oxidized carbons depend on the type of oxidizing agent as well as oxidation conditions. This comparison shows that the modification of carbons with concentrated nitric acid caused the most pronounced surface and structural changes. These changes were much smaller for the samples modified with perchloric acid and hydrogen peroxide. Copyright 1999 Academic Press.
一系列活性炭和炭黑用各种氧化剂如过氧化氢、高氯酸和硝酸进行氧化。通过使用氮气和水蒸气吸附等温线以及高分辨率热重分析法对它们的表面和结构性质进行了评估。对所研究样品的差示热重曲线以及氮气和水蒸气吸附等温线的对比分析表明，氧化炭的表面性质取决于氧化剂的类型以及氧化条件。这种比较表明，用浓硝酸对炭进行改性会引起最显著的表面和结构变化。用高氯酸和过氧化氢改性的样品的这些变化要小得多。版权所有1999年学术出版社。
