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通过磷钼酸(H3PMo12O40.xH2O)和邻菲啰啉(C12H8N2.H2O)的低热固相反应,合成了一种非水溶性的杂多化合物。用等离子体原子发射光谱(ICPAE)、元素分析(EA)和热重-差热分析(TG-DTA)确定该化合物组成为(C12H8N2)3.H3PMo12O40。用X-射线衍射(XRD)、傅里叶变换红外光谱(FT-IR)和紫外-可见漫反射光谱(UV-Vis DRS)对产物进行了表征。结果表明,该化合物保持磷钼酸根的Keggin结构,呈现可逆的光致变色效应。在高压汞灯照射下,该化合物对甲基橙水溶液的脱色反应表现出较好的光催化活性,催化剂易于回收,且重复使用效果好。
A non-water-soluble heteropoly compound was synthesized by the low-temperature solid-state reaction of phosphomolybdic acid (H3PMo12O40.xH2O) and phenanthroline (C12H8N2.H2O). The chemical composition of this compound was determined to be (C12H8N2) 3.H3PMo12O40 by ICP-AES, elemental analysis (EA) and thermogravimetry-differential thermal analysis (TG-DTA) The products were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and UV-Vis diffuse reflectance spectroscopy (UV-Vis DRS). The results show that the compound maintains the Keggin structure of phosphomolybdate and exhibits a reversible photochromic effect. Under high pressure mercury lamp irradiation, the compound showed good photocatalytic activity for the decolorization of methyl orange aqueous solution, and the catalyst was easy to be recovered, and the effect of repeated use was good.