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鈣鈦礦型La1-xSrxMnO3納米薄膜的制備及其光催化性能
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河北省自然科學(xué)基金資助項(xiàng)目(B2008 000758)


Preparation and Photo-Catalytic Activity of Perovskite La1-xSrxMnO3 Nano Thin-Film
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    摘要:

    采用溶膠-凝膠法和浸漬提拉技術(shù)在載玻片基底上制備出鈣鈦礦型La1-xSrxMnO3納米薄膜；采用TG/DTA技術(shù)分析前驅(qū)體凝膠的熱分解歷程；利用AFM觀察薄膜的形貌特征；通過XRD進(jìn)行物相分析，并計(jì)算其晶粒尺寸。結(jié)果表明，La1-xSrxMnO3薄膜在600 ℃形成，為鈣鈦礦結(jié)構(gòu)，其平均晶粒尺寸為10.349 nm。采用該薄膜對多種水溶性染料進(jìn)行光催化降解試驗(yàn)的結(jié)果表明，摻雜后該類納米薄膜有較好的光催化效果，當(dāng)x＝0.2時(shí)光催化效果最好。

    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.

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胡 婕,邵光杰,黃 浩,邢廣忠.鈣鈦礦型La1-xSrxMnO3納米薄膜的制備及其光催化性能[J].稀有金屬材料與工程,2010,39(1):173~176.[Hu Jie, Shao Guangjie, Huang Hao, Xing Guangzhong. Preparation and Photo-Catalytic Activity of Perovskite La1-xSrxMnO3 Nano Thin-Film[J]. Rare Metal Materials and Engineering,2010,39(1):173~176.]
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  • 收稿日期:2009-01-16
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