活性炭表面官能团对MOF复合物的影响  

The Effect of Surface Functional Groups of Activated Carbon on MOF Composites

作　　者：余早红 曾淦宁[1] 吴冬冬[1] 丁一梅 史文悦 

机构地区：[1]浙江工业大学海洋学院,浙江杭州310014

出　　处：《浙江化工》2017年第8期11-15,共5页Zhejiang Chemical Industry

基　　金：浙江省海洋经济创新发展区域示范成果转化及产业化项目(NO.2015-83)

摘　　要：以市售椰壳活性碳为掺杂物,采用硝酸氧化和氯离子取代氨基化法制备酸性活性炭(AAC)和氨基活性炭(NAC)。分别与HKUST-1复合,考察活性炭表面官能团的种类和掺杂量对复合物表面形貌和孔结构的影响。Boehm滴定结果表明酸性官能团和氨基官能团成功引入了活性炭表面,同时,SEM、XRD、BET等表征结果表明活性炭的掺杂没有破坏HKUST-1晶体生长并成功增加了其比表面积。活性炭的掺杂有效提高了HKUST-1的比表面积,尤其是NAC的掺杂。活性炭表面的氨基不仅参与MOFs金属中心的配位,利于羧基的去质子化促进MOFs复合的形成,同时为MOFs引入了新的吸附位点。Acid activated carbon （AAC） and amino activated carbon （NAC） were prepared by nitric acid oxidation and chloride ion substituted amino acid using commercially available coconut shell activated car-bon as dopant. Which were combined with HKUST-1, and the effects of the types and doping amount of sur-face functional groups on the surface morphology and pore structure of the composites were investigated. The results of Boehm titration showed that the acidic functional groups and amino functional groups successfully introduced the activated carbon surface. At the same time, the results of SEM, XRD and BET showed that the doping of activated carbon did not destroy HKUST-1 crystal and increased its specific surface area. The doping of activated carbon effectively increased the specific surface area of HKUST-1, especially NAC. The amino groups on the surface of the activated carbon not only participated in the coordination of the center of the MOF metal, but also promoted the formation of the MOF composite by the deprotonation of the carboxyl group, and introduced a new adsorption site for the MOF.

关 键 词：活性炭 表面官能团 氨基 MOFS 复合物 

分 类 号：TQ424.1[化学工程]