【摘要】 采用溶胶-凝胶法和浸渍提拉技术在载玻片基底上制备出钙钛矿型La1-xSrxMnO3纳米薄膜;采用TG/DTA技术分析前驱体凝胶的热分解历程;利用AFM观察薄膜的形貌特征;通过XRD进行物相分析,并计算其晶粒尺寸。结果表明,La1-xSrxMnO3薄膜在600℃形成,为钙钛矿结构,其平均晶粒尺寸为10.349nm。采用该薄膜对多种水溶性染料进行光催化降解试验的结果表明,掺杂后该类纳米薄膜有较好的光催化效果,当x=0.2时光催化效果最好。更多还原

【Abstract】 The perovskite La1-xSrxMnO3 nano thin-film on the slide glass basis were prepared by sol-gel method and dip-coating technology.The heat decomposition of the precursor gel was analyzed by means of TG/DTA.The appearance characteristic of the thin film was observed by AFM.The phase change was analyzed by XRD and crystal grain size was also calculated.The results show that the perovskite La1-xSrxMnO3 thin film can be synthesized at 600 °C and average crystal grain size is 10.349 nm.The degradation experiment of various water-soluble dyestuffs was performed using the film as photo-catalyst.The results reveal that this nano thin-film with Sr doping has good photo-catalysis and when x=0.2 the effect is best.更多还原