文献类型：期刊文献

英文题名：Novel oral spherical activated carbon with ultrahigh specific surface area for adsorption of endogenous toxins

作者：Wu, Ziling[1];Zhang, Yongzheng[1,2];Wang, Yanli[1];Shen, Chunyin[1];Zhan, Liang[1]

机构：[1]East China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Key Lab Specially Funct Polymer Mat & Related Tech, Shanghai 200237, Peoples R China

年份：2023

卷号：340

外文期刊名：MATERIALS LETTERS

收录：;EI(收录号：20231113702778);WOS:【SCI-EXPANDED(收录号:WOS:000951405500001)】；

基金：This work was funded by the National Natural Science Foundation of China (No. 22075081) and the Fundamental Research Funds for the Central Universities (JKD01231701) .

语种：英文

外文关键词：Carbon materials; Porous materials; Spherical activated carbon; Creatinine; Adsorption

摘要：Oral adsorbents can treat chronic kidney disease by removing endogenous toxins from the gastrointestinal tract. Herein, a novel polystyrene-based spherical activated carbon adsorbent with an ultrahigh specific surface area (2125.18 m(2).g(-1)) and a good particle strength (30 N) was successfully prepared via air-oxidation and steam activation. The spherical activated carbon adsorbent possessing hierarchically porous structure presented high creatinine adsorption capacity (up to 300.37 mg.g(-1)) and excellent adsorption selectivity for different molecular weight adsorbates. Moreover, the pH variation had little effect upon the adsorption capacity of creatinine on the adsorbents. Finally, the mechanism of creatinine adsorption on spherical activated carbon adsorbents was pro-posed. Van der Waals force and hydrogen bond were considered the driving forces of adsorption for creatinine.