采用一锅法,以抗坏血酸为还原剂,制备了金属银纳米粒子负载高稳定性UiO-66的金属有机框架(MOFs)基复合催化材料,并研究了不同还原剂对其形貌的影响。通过X射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)、X射线光电子能谱(XPS)等手段对催化剂的结构进行了表征。将复合材料用于罗丹明B染料的光催化降解和催化CO2与环氧的环加成反应,结果表明合成的纳米银颗粒负载UiO-66复合材料具有较好的光催化活性,并且在环氧氯丙烷与CO2的环加成反应中具有优异的催化性能。
Metal-organic frameworks(MOFs)based composite catalysts with metal silver nanoparticles loaded onto highly stable UiO-66 were prepared by one pot method,in which ascorbic acid acted as reduction agent.The effects of various reduction agents on the morphology of MOFs were also investigated.The structure of the catalyst was characterized by X-ray diffraction (XRD),scanning electron microscopy (SEM),transmission electron microscopy (TEM),and X-ray photoelectron spectroscopy (XPS).The composite materials were used in the photocataytic degradation of Rhodamine B dye and catalyzing the cycloaddition reaction of CO2 with epoxide.The results showed that the silver nanoparticles supported UiO-66 composite had good photocatalytic activity and excellent catalytic performance in the cycloaddition reaction of epichlorohydrin and CO2.
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基金资助
安徽省自然科学基金资助项目(1908085MB42)
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