裴志洋,黄泽义,孟卓,尤楠.化学通报,2019,82(9):811-815.
As(V)离子印迹有机-无机杂化材料及其对As(V)的选择性吸附
Preparation and Selective Adsorption of As(V)-Imprinted Organic–Inorganic Hybrid Sorbents for As(V) Ions
投稿时间:2019-04-03  修订日期:2019-04-15
DOI:
中文关键词:  离子印迹    水热辅助  吸附模型  动力学
英文关键词:Ion Imprinted  Arsenic  Hydrothermal Assisted  Isotherm  Kinetics
基金项目:国家自然科学基金(21477082和21177076)
作者单位E-mail
裴志洋 辽宁石油化工大学化学化工和环境学部 715190592@qq.com 
黄泽义 辽宁石油化工大学化学化工和环境学部  
孟卓 辽宁石油化工大学化学化工和环境学部  
尤楠 辽宁石油化工大学化学化工和环境学部 younan_77@163.com 
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中文摘要:
      采用水热辅助表面印迹技术,制备了氨基功能化As(V)离子印迹有机-无机杂化材料,利用红外光谱和扫描电镜表征了其形貌和表面官能团,采用平衡吸附法研究了印迹杂化材料对As(V)的吸附行为及机理,计算了等温吸附模型和吸附动力学的参数。研究结果表明:水热辅助表面印迹法可以显著提高印迹杂化材料的吸附容量,在20 °C时,吸附量达到47.5 mg?g-1;在20 °C条件下,吸附平衡时间为30 min;在pH值4-9范围内,pH值对吸附容量没有显著性影响;离子印迹杂化材料显示出优异的选择性;离子印迹杂化材料再生五次后, As(V)的吸附容量没有大幅降低;As(V)离子在离子印迹杂化材料的吸附过程符合 Langmuir和准二级动力学模型。
英文摘要:
      An amino-functionalized As(V)-ion imprinted organic–inorganic hybrid sorbent was prepared by hydrothermal assisted surface imprinting technique, and then its morphology and functional groups were characterized by SEM and FTIR. The adsorption property and selective removal ability of the imprinted hybrid sorbent were investigated by batch method. The results showed that the static adsorption capacity of the imprinted hybrid sorbent was improved evidently and found to be 47.5 mg?g-1 at 20 °C. The contact time was 30 min at 20 °C. There was insignificant effect of pH in the range of 4-9 on the adsorption capacity of As(V). The imprinted hybrid sorbent indicated the good selectivity for As(V) in the binary solution. After the imprinted hybrid sorbent was reused 5 cycles, no substantial reduction of adsorption capacity was observed. The adsorption process of As(V) onto the imprinted hybrid sorbent followed Langmuir isotherm and pseudo-second order kinetic model.
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