Synthesis of Flower-like Zinc Oxalate Microspheres in Ether-water Bilayer Refluxing Systems and Their Conversion to Zinc Oxide Microspheres

Liang Ni,Lei Wang,Bing Shao,Yinjue Wang,Wenli Zhang and Yong Jiang School of Chemistry and Chemical Engineering,Jiangsu University,Zhenjiang 212013,China

摘 要：Flower-like zinc oxalate with a mean diameter of 50 μm was synthesized via the reaction of zinc acetate and dimethyl oxalate in ether-water bilayer refluxing systems at low temperature.Flower-like zinc oxalate microspheres can be further transformed into the similar morphology to zinc oxide by the decomposition of zinc oxalate at 500℃.Scanning electron microscopy（SEM）,X-ray diffraction（XRD）,thermogravimetric analysisdifferential scanning calorimetric（TG-DSC）,energy dispersive X-ray spectrum（EDX） and Fourier transforminfrared spectroscopy（FT-IR） were used to characterize the structure features and chemical compositions of the as-synthesized products.The UV-Vis and photoluminescence spectrum of flower-like zinc oxide microspheres were studied.The experimental results showed that flower-like zinc oxalate microspheres may be self-assembled by the zinc oxalate flakes.The ether-water volume ratio of 4:1 and refluxing temperature of 40℃ were considered to favor the preparation of flower-like zinc oxalate microspheres.

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