文献类型：期刊文献

英文题名：Adsorption behaviors for oleuropein from olive leaves extracts by porous materials with carbon nanotubes

作者：Liu, Yi[1,2,3];Liu, Yongfeng[1,2,3];Zhang, Junhan[1,2,4];Wu, Xiaoyu[1,2];Wei, Jianteng[1,2,3];Pei, Dong[1,2,3];Di, Duolong[1,2,3]

第一作者：Liu, Yi

通信作者：Liu, YF[1]

机构：[1]Chinese Acad Sci, Lanzhou Inst Chem Phys, Key Lab Chem Northwestern Plant Resources, Lanzhou 730000, Peoples R China;[2]Chinese Acad Sci, Lanzhou Inst Chem Phys, Key Lab Nat Med Gansu Prov, Lanzhou 730000, Peoples R China;[3]Ctr Resource Chem & New Mat, Qingdao 266100, Peoples R China;[4]Gansu Coll Tradit Chinese Med, Coll Gansu Prov, Key Lab Chem & Qual Tradit Chinese Med, Dept Pharm, Lanzhou 730000, Peoples R China

第一机构：Chinese Acad Sci, Lanzhou Inst Chem Phys, Key Lab Chem Northwestern Plant Resources, Lanzhou 730000, Peoples R China

通信机构：[1]corresponding author), Chinese Acad Sci, Lanzhou Inst Chem Phys, Key Lab Chem Northwestern Plant Resources, Lanzhou 730000, Peoples R China.

年份：2015

卷号：293

期号：8

起止页码：2395

外文期刊名：COLLOID AND POLYMER SCIENCE

收录：;EI(收录号：20152300916827);Scopus(收录号：2-s2.0-84937521749);WOS:【SCI-EXPANDED(收录号:WOS:000358054500027)】；

基金：This research project was financially supported by the "Hundred Talents Program" of the Chinese Academy of Sciences (CAS) and the National Natural Sciences Foundation of China (NSFC No. 20974116).

语种：英文

外文关键词：Carbon nanotubes; Porous materials; Oleuropein; Adsorption

摘要：Porous materials with carboxyl-modified multi-walled carbon nanotube (C-CNT) were prepared and applied to enrich oleuropein. Surface area, pore volume, and average pore diameter increased with increasing C-CNT content, and adsorption capacity was greatly enhanced. The results indicated that pseudo-second-order kinetics could describe the whole adsorption process, while intraparticle diffusion model fit the experimental data for the second stage (10-300 min). It suggested Freundlich isotherm model could describe the adsorption process. It showed that the porous materials exhibited excellent reusability and during six adsorption-desorption cycles, adsorption capacities showed no obvious loss. The high adsorption capacities, easy desorption, and remarkable reusability made the prepared porous materials as novel adsorbents for the enrichment of oleuropein. This study indicates porous materials with carboxyl group, large surface area, pore volume, and average pore diameter are favorable for oleuropein enrichment, providing an idea to design porous materials with carboxyl groups for oleuropein enrichment.