Ilnicka Anna, Gauden Piotr A, Terzyk Artur P, Lukaszewicz Jerzy P
J Nanosci Nanotechnol. 2016 Mar;16(3):2623-31. doi: 10.1166/jnn.2016.10839.
A series of porous carbon matrixes was prepared by phosphoric (V) acid activation of unconventional precursors chitin and chitosan: impregnation with H3PO4 at concentrations ranging from 1.34 to 5.53 mole dm(-3), followed by carbonization at 600 degrees C. The obtained carbons demonstrated well-developed porosity that declined steadily in the micropore and mesosopore ranges, depending on both the kind of the precursor and the concentration of activator. The surface area and pore volume of the carbons prepared from chitin increased upon the rising impregnation ratio. The surface area and total pore volume reached their maximum values (1257 m2g(-1) and 1.007 cm3g(-1), respectively) for the acid concentration of 3.40 mole dm(-3). The chars obtained from chitosan showed the values of the BET surface area ranging from 970 to 1484 m2g(-1). Chemical analysis indicated that the activation with phosphoric acid led to the chars of exceptionally high concentration of nitrogenated functionalities and a typical amount of oxygenated surface groups.
通过用磷酸（V）对非常规前驱体几丁质和壳聚糖进行活化制备了一系列多孔碳基体：用浓度范围为1.34至5.53摩尔·分米⁻³的H₃PO₄进行浸渍，随后在600℃下碳化。所得到的碳表现出发育良好的孔隙率，其在微孔和中孔范围内稳步下降，这取决于前驱体的种类和活化剂的浓度。由几丁质制备的碳的表面积和孔体积随着浸渍比的增加而增大。对于酸浓度为3.40摩尔·分米⁻³时，表面积和总孔体积分别达到其最大值（分别为1257平方米·克⁻¹和1.007立方厘米·克⁻¹）。从壳聚糖获得的炭的BET表面积值在970至1484平方米·克⁻¹范围内。化学分析表明，用磷酸活化导致炭具有异常高浓度的含氮官能团和典型数量的含氧表面基团。
