一锅法制备MgO/蓝藻基碳介孔复合材料及CO_(2)吸附性能研究  

Study on One-Potpreparation of MgO/Cyanobacteria-Based Carbon Mesoporous Composites for CO_(2) Capture

作　　者：夏煜涛 韩林松 史梦婷 张汉雨 廖永旭 丁波 齐佳慧 金效齐 XIA Yu-tao;HAN Lin-song;SHI Meng-ting;ZHANG Han-yu;LIAO Yong-xu;DING Bo;QI Jia-hui;JIN Xiao-qi(School of Materials and Chemical Engineering,Bengbu University,Bengbu 233030,China)

机构地区：[1]蚌埠学院材料与化学工程学院,安徽蚌埠233000

出　　处：《安徽化工》2024年第2期65-69,共5页Anhui Chemical Industry

基　　金：高水平科研培育项目(Grant No.2021pyxm09);蚌埠学院科研启动基金项目(BBXY2018KYQD22);大学生创新创业项目(202111305006)。

摘　　要：采用一锅法,以KOH活化后的蓝藻粉为碳源,以六水硝酸镁为镁源,通过简单研磨固相反应,成功制备了MgO/C复合材料,并探究了镁源和碳源的投料比对介孔MgO/C复合材料结构的影响,同时采用X-射线衍射法、N_(2)等温吸脱附曲线法、扫描电镜法、红外光谱法、拉曼光谱法等现代技术对复合材料的组织结构进行表征。结果表明,MgO/C复合材料具有介孔结构,随着MgO负载量的增加,复合材料的比表面积和孔容下降;CO_(2)等温吸附性能研究表明,氧化镁与碳复合后对CO_(2)吸附能力有明显的改善,样品的孔结构对CO_(2)吸附能力有一定程度影响。In this paper,the MgO/C composite was successfully prepared by using KOH activated cyanobacteria powder as carbon source and magnesium nitrate hexahydrate as magnesium source through simple grinding solid reaction.The struc-ture of mesoporous MgO/C composite was explored by comparing the feeding of magnesium source and carbon source.At the same time,X-ray diffraction,N_(2) isothermal adsorption and desorption curve,scanning electron microscopy,infrared spec-troscopy,Raman spectroscopy and other modern techniques were used to characterize the structure of the composite.The re-sults showed that the MgO/C composite exhibited mesoporous structure,and the specific surface and pore volume of the composite decreased with the increase of MgO/load content.The study of CO_(2) isothermal adsorption performance showed that the CO_(2) adsorption capacity was obviously improved after the combination of MgO and carbon,and the pore structure of the sampleaffected on the CO_(2) adsorption capacity.

关 键 词：蓝藻粉 介孔MgO/C复合材料 CO_(2)吸附 

分 类 号：TQ424[化学工程]