单晶MoO_3纳米片:静电纺丝法制备及光催化活性  

Electrospinning Preparation and Visible-Light Photocatalytic Activity of Single Crystal MoO_3 Nanoplatelets

作　　者：荆飞飞[1] 周德凤[1] 杨国程[1] 刘海涛[1] 孟健[2] 

机构地区：[1]长春工业大学化学与生命科学学院,长春130012 [2]中国科学院长春应用化学研究所稀土资源利用国家重点实验室,长春130022

出　　处：《无机化学学报》2011年第3期527-532,共6页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.20871023;20671088);吉林省科技发展计划(No.20070510;20101549)资助项目

摘　　要：以聚乙烯基吡咯烷酮(PVP)和钼酸铵((NH4)6Mo7O24.4H2O)为原料,利用静电纺丝技术结合溶胶过程制备了PVP/(NH4)6Mo7O24.4H2O前躯体,对前躯体缓慢控温处理制备MoO3纳米材料。通过X-射线光电子能谱(XPS)﹑红外光谱(FTIR)﹑X射线粉末衍射(XRD)和场发射扫描电子显微镜(FE-SEM)等表征手段研究了热处理温度对MoO3晶体生长和结构的影响。以亚甲基蓝(MB)的光降解为模型反应,研究了MoO3微纳米材料的光催化性能。结果表明,热处理温度500℃时生成的MoO3纳米片光催化活性最好,并探讨了其光催化机理。PVP/（NH4）6Mo7O24·4H2O nanofibers was fabricated by electrospinning technique and then the electrospun precursors were calcined at different temperatures.In order to study the growth process of the crystal,X-ray photoelectron spectroscopy（XPS）,Fourier transform infrared spectroscopy（FTIR）,X-ray diffraction（XRD） and field emission scanning electron microscopy（FE-SEM） were used to characterize the samples.Importantly,the visible-light photocatalytic activity of samples was evaluated by employing methylene blue（MB） as a probe.The results suggest that MoO3 nanoplatelets are obtained at 500 ℃ and the best photocatalytic activity is achieved when using MoO3 nanoplatelets as a catalyst.

关 键 词：静电纺丝 MOO3 纳米片 光催化活性 

分 类 号：O614.33[理学—无机化学]