以荷花花粉为模板合成分级多孔金属氧化物中空微球

Synthesis of Hierarchical Porous Metal Oxides Hollow Microspheres Using Lotus Pollen as Template

以荷花花粉为模板,利用简便、经济的湿化学法合成系列分级多孔金属氧化物中空微球(MnO_(2)、MnO_(3)、LaCoO_(3)),通过XRD、XPS、SEM、N_(2)吸附-脱附分析对合成样品的物相结构与微观形貌进行表征。结果表明,荷花花粉模板法合成的MnO_(2)、MnO_(3)、LaCoO_(3)中空微球成功复制了花粉的分级多孔结构,其比表面积分别高达115.64、48.65、85.33 m^(2)/g,包含有尺寸在2~100 nm的多级孔径分布。该生物模板法为分级多孔金属氧化物中空微球的合成提供了一种绿色、简单的合成思路。

Using lotus pollen as template,hierarchical porous hollow microspheres of metal oxides such as MnO_(2),MnO_(3) and LaCoO_(3) are synthesized by facile and cost-effective wet chemical process.Phase structure and micro morphology of the synthesized samples are characterized by XRD,XPS,SEM and N_(2) adsorption and desorption analysis.The results show that synthesized hollow microspheres of MnO_(2),MnO_(3) and LaCoO_(3) can successfully replicated the porous pollen structure,and the specific surface area is 115.64,48.65 and 85.33 m^(2)/g respectively.It contains a multi-stage pore size distribution within 2~100 nm.This biotemplate method provides a green and easy idea for preparation of hierarchical porous hollow microspheres of metal oxides.