FTIR spectra confirms that the surface of CNTs-C foam can be grafted with carboxyl and hydroxyl groups after being activated with mixture of sulfuric acid and nitric acid.

• 红外光谱结果表明利用浓硫酸和浓硝酸的混合溶液处理可以使复合泡沫表面活化形成羧基和羟基，从而使复合泡沫具备较强的分子吸附能力。