Zhou Chenggang, Ni Jiadong, Zhang Dan, Sun Chang
Key Laboratory of Eco-textiles, Ministry of Education, College of Textiles and Clothing, Jiangnan University, Wuxi, Jiangsu 214122, China.
Key Laboratory of Eco-textiles, Ministry of Education, College of Textiles and Clothing, Jiangnan University, Wuxi, Jiangsu 214122, China.
Carbohydr Polym. 2019 Aug 1;217:1-5. doi: 10.1016/j.carbpol.2019.04.048. Epub 2019 Apr 13.
Metal selective adsorbent (MCPP-SA-MCC) was synthesized by the reaction of macrocyclic pyridone pentamer (MCPP) with succinic acid anhydride modified microcrystalline cellulose (SA-MCC). Selectivity of the tailor-made adsorbent to metal cations was studied by measuring its competitive adsorption ability to nine metal cations (Ba, Pb, Cd, Mn, Cu, Co, Ni, and Cr). It was found that MCPP-SA-MCC exhibited a patterned recognition of metal cations remarkably correlated with the metal cation radius. In the simulated wastewater effluent containing nine metal cations, MCPP-SA-MCC dominantly adsorbed Ba, which has a larger ion radius than others, and 75% of Ba was removed while others less than 18%. These features indicated the promise of MCPP-SA-MCC as a candidate to remove heavy metal cations from aqueous solution selectively.
金属选择性吸附剂（MCPP-SA-MCC）通过大环吡啶酮五聚体（MCPP）与琥珀酸酐改性微晶纤维素（SA-MCC）反应合成。通过测量其对九种金属阳离子（Ba、Pb、Cd、Mn、Cu、Co、Ni和Cr）的竞争吸附能力，研究了这种特制吸附剂对金属阳离子的选择性。结果发现，MCPP-SA-MCC对金属阳离子表现出与金属阳离子半径显著相关的模式识别。在含有九种金属阳离子的模拟废水流出物中，MCPP-SA-MCC主要吸附离子半径比其他离子大的Ba，Ba的去除率为75%，而其他金属阳离子的去除率不到18%。这些特性表明MCPP-SA-MCC有望成为从水溶液中选择性去除重金属阳离子的候选材料。
