溶剂热法制备W_(18)O_(49)纳米粉体及其光催化性能研究  

Study on the solvothermal synthesis of W_(18)O_(49) nanopowder and its photocatalytic properties

作　　者：介燕妮[1] 海国娟 黄剑锋[1] 曹丽云[1] 吴建鹏[1] 张飞飞[1] 马鼎 

机构地区：[1]陕西科技大学材料科学与工程学院,陕西西安710021

出　　处：《陕西科技大学学报（自然科学版）》2016年第2期69-73,共5页Journal of Shaanxi University of Science & Technology

基　　金：陕西省教育厅专项科研计划项目(15JK1072);陕西科技大学博士科研启动基金项目(BJ14-06)

摘　　要：以氯化钨为原料,异丙醇为溶剂,采用溶剂热法成功合成了W_(18)O_(49)纳米粉体,探究辅助剂草酸及反应温度对纳米粉体结构、形貌和光催化性能的影响.采用X-射线衍射仪和扫描电子显微镜对产物进行了物相及形貌表征,通过紫外光照下降解甲基橙研究了纳米粉体的光催化性能.结果表明:加入草酸可以控制产物形貌,制得直径为10nm的W_(18)O_(49)纳米颗粒,与未加草酸相比,光催化性能有了较大提高.不同反应温度下制备的W_(18)O_(49),产物结晶性随着温度的升高先增加后减小,在160℃时最好,光催化性能达到最佳.W18O49 Nano-powder was synthesized by the solvothermal route,with tungsten chloride as raw material and isopropyl alcohol as a solvent.The effects of the oxalic acid and reaction temperature on the nano-powder structure,morphology and photocatalytic properties were investigated.The phase purity was confirmed by XRD and SEM also revealed different nature of surfaces and microstructures for W18O49 nanopowder obtained.The photocatalytic property was studied on degradation of methyl orange under UV light.Results indicated that adding oxalic acid can control the morphology.The photocatalytic properties have been greatly improved with adding oxalic acid.

关 键 词：溶剂热法 W18O49 光催化降解 

分 类 号：TB383[一般工业技术—材料科学与工程]