Simultaneous control of the pore volume and the surface wettability in porous carbons prepared by carbonization of iodine-treated cellulose derivatives
Simultaneous control of the pore volume and the surface wettability in porous carbons prepared by carbonization of iodine-treated cellulose derivatives
复制标题
同时控制碘处理纤维素衍生物碳化制备的多孔碳的孔体积和表面润湿性
DOI：
10.1007/s10934-020-00986-x
复制
发表时间：
2020
影响因子：
2.6
通讯作者：
Hideto Sakane
中科院分区：
文献类型：
--
作者：
Naoya Miyajima;Taiyu Matsumura;Takuma Yanagisawa;Hideto Sakane
以羧甲基纤维素及其钠盐为原料，加入不同量的碘，通过碳化法制备了微孔炭。通过将原料暴露在碘蒸汽中进行碘导入处理。用几种与水吸附有关的方法研究了碳与水分子之间的相互作用。碘处理在不降低炭产率的情况下得到了多孔炭。钠盐与I/Na摩尔比≈1的处理使炭具有最大的微孔表面积约为900m2/g，表面酸性官能团的数量约为1.81mmo1/g，从而与水有较高的相互作用。酸性官能团的引入增加了水的吸附活性中心。通过对纤维素基资源进行简单的碘处理和碳化处理，有望获得一种同时适当提高成炭率、孔隙率和表面润湿性的多孔炭。
Microporous carbon was prepared by carbonization of carboxymethylcellulose and its sodium salt introduced various amounts of iodine. The iodine introducing treatment was performed by exposing raw materials to iodine vapor. Interaction between the carbon and water molecules was investigated by several methods related to water adsorption. The iodine treatment gave the porous carbons without reducing their char yield. The treatment on the sodium salt to I/Na molar ratio ≈ 1 gave the carbon both the largest microporous surface area of ca. 900 m2/g and the amount of acidic surface functional groups of ca. 1.81 mmol/g in the carbon which led to a higher interaction with water. The introduced acidic functional groups contributed to an increase in active site of water adsorption. It was expected that a porous carbon with simultaneous and suitable improving of char yield, porosity, and surface wettability would be achieved by the simple processing of iodine treatment and carbonization from cellulose-based resources.