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.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
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
关键词
静电纺丝
MOO3
纳米片
光催化活性
electrospinning technology
MoO3
nanofiber
photocatalytic activity
