多酸基分子材料在图书馆清洁与用户环境保护中的应用研究

Application of porphyrin coordination materials in library cleaning and environment protection

本文采用1,4-双(咪唑-1-基)丁烷(bbi)作为平衡阳离子,制备了一个新的多酸化合物,(C_(10)H_(15)N_(4))_(2)(HPW_(12)O_(40))·H_(2)O。通过单晶X射线衍射对化合物进行结构表征,化合物为单斜晶系,空间群为:a=19.788(3)Å,b=13.781(3)Å,c=21.550(4)Å,α=90°,β=114.906(3)°,γ=90°,Z=4,V=5329.9(16)Å^(3)。晶体结构分析表明Keggin型(HPW_(12)O_(40))^(2)-单元,与质子化有机阳离子以及水分子通过氢键形成三维超分子结构。光催化实验结果表明,该化合物对甲醛具有明显的降解作用。当甲醛初始浓度为0.4μg·mL^(-1),反应时间15 h,λ=370 nm,甲醛降解率达到71.1%。本文以实验分析、研究为手段,尝试性地研究了将其应用到图书馆环境清洁与用户环境保护工作中的可行性。

In this paper a new polyoxometalate(POM)-based compound,(C_(10)H_(15)N_(4))_(2)(HPW_(12)O_(40))·H_(2)O was prepared,using 1,4-bis(imidazol-1-yl)butane(bbi)as the equilibrium cation.The structure of the compound was characterized by single crystal X-ray diffraction.The compound was monoclinic with space group:a=19.788(3)Å,b=13.781(3)Å,c=21.550(4)Å,α=90°,β=114.906(3)°,γ=90°,Z=4,V=5329.9(16)Å^(3).Crystal structure analysis showed that the Keggin-type(HPW_(12)O_(40))_(2) unit formed a three-dimensional supramolecular structure by hydrogen bonding with protonated organic cations and water molecules.The results of photocatalytic experiments showed that the compound had a significant degradation effect on formaldehyde.When the initial concentration of formaldehyde was 0.4μg·mL^(-1),the reaction time was 15 hours,λ=370 nm,the degradation rate of formaldehyde reached 71.1%.By means of experimental analysis and research,this paper attempted to study the feasibility of applying it to library environmental cleaning and user environmental protection.