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纳米晶AgLa₃Se₅的合成及光催化特性

Synthesis and Photocatalysis of Nanocrystalline AgLa₃Se₅

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【Author】 Liu Xingzhi~(1),Zhao Changming~1,Nan Feng~2,Yu Guiying~1 (1.Institute of Chemistry Science &(Engineering),Liaoning University,Shenyang 110036,China;2.Second Affiliated Hospital of Dalian Medical University,Dalian 116023,China)

【机构】辽宁大学化学科学与工程学院；大连医科大学附属二院；辽宁大学化学科学与工程学院辽宁沈阳110036；辽宁沈阳110036；辽宁大连116045；

【摘要】以乙二胺为溶剂,AgNO3,La(NO3)3.6H2O和Se粉为原料,采用微波溶剂热法合成纳米晶AgLa3Se5。通过X射线粉末衍射(XRD)、透射电子显微镜(TEM)和X射线光电子能谱(XPS)等手段表征了其组成。结果表明:产物为纳米晶颗粒,平均粒度25 nm。以AgLa3Se5为光催化剂,对甲基橙溶液进行光催化降解,讨论了反应条件对光降解率的影响,表明纳米晶AgLa3Se5具有良好的光催化效果,可重复使用。更多还原

【Abstract】 Using ethyl diamine as organic solvent and AgNO₃,La（NO₃）₃·6H₂O and Se powders as materials,the nanocrystalline AgLa₃Se₅ was synthesized by microwave solvothermal technique.Several techniques including EDS,XRD,TEM and XPS were used to characterize its composition and structure.The result shows that the product is nanocrystalline and the average particle size is 25 nm.Using the degradation of methyl orange as model reaction.The effect of the reaction conditions on photocatalytic activity was studied.It shows that nanocrystalline AgLa₃Se₅ is a good photocatalyst and can be used repeatedly.更多还原