静电纺In_2O_3纳米纤维的光致发光性能研究  

Study on Photoluminescence Property of Electrospun In_2O_3 Nanofibers

作　　者：王晓玲[1] 蒲维玮 逄增媛 罗磊[1] 陈晓东[1] 魏取福[1] 

机构地区：[1]江南大学生态纺织教育部重点实验室,无锡214122

出　　处：《人工晶体学报》2014年第7期1645-1650,共6页Journal of Synthetic Crystals

基　　金：国家高技术研究发展计划(863计划)(2012AA030313);教育部长江学者和创新团队发展计划(IRT1135);江苏省产学研联合创新基金(BY2012068);江苏省科技支撑计划(工业)(SBE201201094);江苏高校优势学科建设工程资助项目;江苏省2013年度普通高校研究生科研创新计划项目(CXLX13_742)

摘　　要：利用静电纺丝技术结合高温煅烧方法制备了一系列多孔结构的一维In2O3无机纳米纤维,并探讨了煅烧温度对产物发光性能的影响及其发光机理。利用热重仪(TGA)、X射线衍射仪(XRD)、傅里叶红外光谱仪(FT-IR)、扫描电子显微镜(SEM)分析了产物的热分解情况、晶型、组分和形貌;通过紫外-可见光谱仪和荧光分光光度计分析研究了一维In2O3纳米纤维的光吸收性能和光致发光性能。结果表明:静电纺前驱体复合纳米纤维成型良好,经500℃、600℃、700℃、800℃高温煅烧后仍保持纤维结构,但纤维直径明显减小,当煅烧温度达到800℃时,纤维出现中空结构;不同温度下煅烧所得In2O3均为立方铁锰矿型;随着煅烧温度的升高,In2O3纳米颗粒粒径逐渐增大;In2O3纳米纤维的的最大紫外吸收峰位于300 nm左右;在室温下,In2O3纳米纤维经274 nm光激发后在553 nm处出现较强的绿光发射峰。A series of one-dimensional In2O3 inorganic nanofibers with porous structure were prepared by electrospinning and thermal treatment,and the effect of calcination temperature on the photoluminescence property and photoluminescence mechanism of the products were investigated. Decomposition of the precursor composite nanofibers during heat treatment process,the crystal structure,component and morphology of the products were analyzed by thermogravimetry（TGA）,X-ray diffractometry（XRD）,fourier transform infrared spectroscopy（FT-IR） and scanning electron microscopy（SEM）. Fianlly,the optical absorption and photoluminescence properties of In2O3 nanofibers were analyzed by UV-visible spectrophotometer and fluorescence spectrophotometer. The experimental results show that： the formation of precursor composite nanofibers were favorable,and the products under 500 ℃,600 ℃,700 ℃,800 ℃still remained fibrous structure,but the diameters of nanofibers were obviously reduced. When the calcination temperature reached 800 ℃,the nanofibers exhibited hollow structure. In2O3 obtained under different calcination temperatures all showed cubic bixbyite structure. As the calcination temperature rose,the size of In2O3 particle became increasingly larger. The ultraviolet absorption peak of In2O3 nanofiberswas located at around 300 nm. A strong green photoluminescence peak at 553 nm was observed in the In2O3 nanofibers after an excitation of them at 274 nm at room temperature.

关 键 词：静电纺 In2O3纳米纤维 光致发光 

分 类 号：TQ343.5[化学工程—化纤工业]