Liu Ziwei, Zhou Xiaoshun, Wu Fengshou, Liu Zhimei
School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Xiongchu Avenue, No.693, Wuhan 430205, China.
Conform Pharm Engineering Center, Humanwell Healthcare (group) Co. Ltd., Gaoxing Avenue, Biolake Park, Wuhan 430075, China.
ACS Omega. 2020 Apr 24;5(17):10106-10114. doi: 10.1021/acsomega.0c00674. eCollection 2020 May 5.
Activated carbon, an amorphous carbon material with a high specific surface area and void fraction, is widely used as an economical adsorbent in many fields. In this work, a kind of new activated carbon composite for saccharide column separation was prepared by zinc chloride impregnating and microwave heating. The structural characterizations validate the increase in porosity and the specific surface area of the activated carbon as well as the change of the activated carbon crystallite lattice. The chemical characterizations validate the increase in the number of oxygen-containing functional groups and structural bonding of zinc with the activated carbon surface. Compared with the blank control, the surface Zn element improves the adsorption selectivity of the activated carbon to the target saccharides. Under the special mechanism of microwaves, the pores created by expansion from the inside to the outside facilitate the free flow of the mobile phase. The eight saccharides can be separated by the columns packed with the activated carbon impregnated with 40% and 70% zinc chloride.
活性炭是一种具有高比表面积和孔隙率的无定形碳材料，在许多领域被广泛用作经济的吸附剂。在本工作中，通过氯化锌浸渍和微波加热制备了一种用于糖类柱分离的新型活性炭复合材料。结构表征证实了活性炭孔隙率和比表面积的增加以及活性炭微晶晶格的变化。化学表征证实了含氧官能团数量的增加以及锌与活性炭表面的结构键合。与空白对照相比，表面锌元素提高了活性炭对目标糖类的吸附选择性。在微波的特殊作用机制下，由内向外膨胀产生的孔隙有利于流动相的自由流动。用浸渍40%和70%氯化锌的活性炭填充的柱子可以分离八种糖类。
