Adsorption of indole on KOH-activated mesoporous carbon
Adsorption of indole on KOH-activated mesoporous carbon
复制标题
KOH活化介孔炭对吲哚的吸附
DOI：
10.1016/j.colsurfa.2013.02.022
复制
发表时间：
2013
期刊：
影响因子：
--
通讯作者：
N. Nishiyama
中科院分区：
文献类型：
--
作者：
T. Mitome;Y. Uchida;Y. Egashira;Kazuyuki Hayashi;A. Nishiura;N. Nishiyama
采用软模板法合成了具有三维虫孔结构的有序介孔炭。以间苯二酚-甲醛（RF）为碳源，以三嵌段共聚物Pluronic F127为软模板剂。将Pluronic F127/间苯二酚的摩尔比改变为0.0027（RF-F127（1））、0.0040（RF-F127（2））和0.0053（RF-F127（3））。用KOH活化中孔炭以提高其孔隙率。经KOH活化后，所有的中孔炭的超孔体积和比表面积都有较大的增加。测定了吲哚在缓冲溶液和人工肠液中的吸附量。KOH-活性炭对缓冲溶液中的吲哚有较高的吸附率。该结果表明，中孔和三维互连孔结构的存在降低了扩散阻力。另一方面，在从人工肠液溶液中吸附吲哚的情况下，在一定时间后，观察到K-RF-F127（2）和K-RF-F127（3）的吲哚解吸。其他大体积的化合物将缓慢扩散，并由于强相互作用而被吸附在吲哚的位置。然而，对于K-RF-F127（1）没有观察到吲哚的解吸，其中孔小于其他KOH-活性炭。这些结果表明，适当的中孔尺寸调整和增加的介孔表面积是必不可少的开发高性能的吲哚吸附剂。
Ordered mesoporous carbons with a 3D wormhole-like structure were synthesized by a soft-templating method. The resorcinol-formaldehyde (RF) was used as a carbon source and a triblock copolymer Pluronic F127 was used as a soft templating agent. The molar ratios of Pluronic F127/Resorcinol were changed 0.0027 (RF-F127(1)), 0.0040 (RF-F127(2)) and 0.0053 (RF-F127(3)). The mesoporous carbons were activated using KOH to improve their porosity. After the KOH activation, the micropore volume and surface area of ultramicropore were largely increased for all the mesoporous carbons. The adsorption of indole from a buffer solution and an artificial intestinal juice solution was measured. The KOH-activated carbons showed high adsorption rate for indole in the buffer solution. This result suggests that the existence of mesopores and 3D-interconnected pore structures reduced the diffusion resistance. On the other hand, in the case of the adsorption of indole from the artificial intestinal juice solution, after a certain period, the desorption of indole was observed for K-RF-F127(2) and K-RF-F127(3). Other bulky compounds would diffuse slowly and be adsorbed in place of indole due to a strong interaction. However, the desorption of indole was not observed for K-RF-F127(1), whose mesopore is smaller than the other KOH-activated carbons. These results suggest that both an appropriate mesopore size tuning and an increase in the micropore surface area are essential for developing a high-performance adsorbent for indole.
口服 AST-120（Kremezine）是治疗晚期糖基化终末产物（AGE）相关疾病的一种有前途的治疗策略
DOI：
--
发表时间：
2007
期刊：
Med. Hypotheses 69
影响因子：
--
作者：
Yamamoto Y;Yonekura H;Takeuchi M (8);Yokoi M,;Unoki H;Yamagishi S
通讯作者：
Yamagishi S