液体中激光烧蚀法制备纳米材料课件.ppt

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,Group members,：,Ou Qian,Chao Zhang,Dan Jia,Yanping Su,Lulu Wen,Gangfeng Wei,Yongkui Wang,Dongfang Wang,Xiangyang Song,Wen Wang,Haiying Zheng.,Nanomaterials Generated by Laser Ablation in Liquids,1,Basic mechanism of LAL(laser ablation in liquids),Sketch of the main stages of LAL,Phys.Chem.Chem.Phys.,2013,15,3027-3046,2,Basic mechanism of LAL,Sketch of the plasma plume formed by laser ablation of a metal target.,*Denotes excited and/or ionized states,Phys.Chem.Chem.Phys.,2009,11,38053821,3,Basic mechanism of LAL,FeO Nanoparticles by LAL,Adv.Funct.Mater.,2012,22,13331353,4,Nanoparticles Derived from LAL method,Metastable structure,Ultra-small size distribution,Unoccupied/charged surfaces,Easy-functionalization,New structures and properties,Quantum size effects,High activity and reactivity,LAL-induced,NPs,Stable and surface passivated,Nanoparticles Synthesized by Chemical Routes,Capped with various stable reagents to prevent aggregation or reaction,5,A(assemble or growth),A+B,=C,New compounds,=AB,Composites,Activity and Reactivity,C,B,A,A,B,+,A,+,A,A,A,A,A,or,6,Examples,1.LAL-based to fabricate carbon-encapsulated metal carbides,2.LAL-based synthesis of ternary oxides,3.LAL-based complex oxidenoble metal nanocomposites,7,pulse laser,acetone,target,Tantalum target,1.LAL-based to fabricate carbon-encapsulated metal carbides,TaCC NPs,Carbon,2013,55,108115,8,NbCC,Mo,x,CC,Co,3,CC,Mo in ethonal,Nb in ethonal,Co in acetone,More products can be synthesized,9,the formation process of carbon-encapsulated metal carbides,10,2.LAL-based synthesis of ternary oxides,J.Mater.Chem.,2012,22,1721017214,11,Design for ternary oxides based on A+B=C,12,various ternary oxides,Morphology,structure and size can be modified,Reaction temperature,Reaction time,pH value,13,3.LAL-based complex oxidenoble metal nanocomposites,Adv.Mater.,2013,25,20402044,14,Brief Summary,LAL-generated NMs present unique activity,beneficial for obtaining,new properties,and,new structures,LAL-generated NMs display unique reactivity,can be used as precursors for preparing,new materials,Laser-generated NMs show,unique application,in catalyst,biosensor etc.,15,THANKS,16,