【摘要】 用钨酸钠通过阳离子树脂交换,得钨酸黄色溶胶,在不同水热条件下分别以传统干燥与微波干燥制得WO3,分别用XRD衍射仪、电子探针、红外光谱表征产物的结构、形态,并探讨其气相光催化活性。结果表明265℃水热钨酸以微波干燥可以制备高结晶纳米棒WO3,产品晶粒小,有较高光催化活性。更多还原

【Abstract】 A yellow aqueous sol of tungstic acid was prepared from Na₂WO₄ with protonated cation exchange resin.A series of highly crystalline nanorods WO₃ were synthesized under different hydrothermal conditions and conventional or microwave desiccation. The structure and mor phological characteristics of the WO₃ were characterized by Xray diffraction （XRD）, electron probe microanalysis （ETMA） and Fourier transform infrared spectroscopy （FTIR）.The photocatalytic activity in the gas phase was discussed. The results showed that the highly crystalline nanorods WO₃ were prepared from hydrothermal tungstic acid at 265 ℃ and by microwave desiccation. It had smaller crystallite size and higher photocatalytic activity.更多还原