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以硝酸铋、钨酸钠和腈纶为原料,采用湿法纺丝制备初生复合纤维;以此初生纤维为原料,将其在一定温度下反应制备出具有可见光催化性能的钨酸铋/腈纶复合纤维。利用XRD、SEM等分析手段,对钨酸铋/腈纶可见光催化复合纤维进行表征。研究结果表明,凝固液、初生复合纤维反应温度、升温梯度,对其光催化性能、物相及形貌均有较大影响。以40%DMSO水溶液作为凝固浴,反应温度为150℃,升温梯度为10℃/10min制备得到的样品,具有良好的光催化性能。在500W氙灯照射下亚甲基蓝溶液降解率能达到84.81%。
Taking bismuth nitrate, sodium tungstate and acrylic as raw materials, primary composite fibers are prepared by wet spinning; the primary fibers are used as raw materials and reacted at a certain temperature to prepare bismuth tungstate / acrylic composite fibers with visible light catalytic properties . XRD, SEM and other analytical tools, bismuth tungstate / acrylic visible composite fibers were characterized. The results show that the coagulation liquid, primary composite fiber reaction temperature, temperature gradient, the photocatalytic performance, phase and morphology have a greater impact. With 40% DMSO aqueous solution as the coagulation bath, the reaction temperature is 150 ℃, the temperature gradient of 10 ℃ / 10min prepared samples, has good photocatalytic properties. Under 500W xenon lamp irradiation methylene blue solution degradation rate can reach 84.81%.