冷冻干燥法制气凝胶PPT.ppt

AdvancedMaterialsPreparedbyFreeze dryingtechnique UniversityofScienceandTechnologyofChina 1 PPT学习交流 2 Contents 2 PPT学习交流 2 Whatisthelightestmaterialintheworld 3 PPT学习交流 2 4 PPT学习交流 2 HaiyanS ZhenX ChaoG AdvancedMaterials 2013 25 2554 2560 Multifunctional Ultra Flyweight SynergisticallyAssembledCarbonAerogels 5 PPT学习交流 2 CNTsaqueousdispersion1 0mg ml 28ml GGOaqueousdispersion1 0mg ml 28ml Mixing Stiringfor1 5h HaiyanS ZhenX ChaoG AdvancedMaterials 2013 25 2554 2560 6 PPT学习交流 2 mixture mold freeze dryingfor2d chemicallyreducedbyN2H4vaporat90 for24h vacuum dryingat160 for24h HaiyanS ZhenX ChaoG AdvancedMaterials 2013 25 2554 2560 7 PPT学习交流 2 HaiyanS ZhenX ChaoG AdvancedMaterials 2013 25 2554 2560 8 PPT学习交流 2 d c e f HaiyanS ZhenX ChaoG AdvancedMaterials 2013 25 2554 2560 9 PPT学习交流 2 冷冻干燥 Freeze drying 又称真空冷冻干燥 冻结干燥 冻干 FD 1811年诞生 用于生物体脱水1890年医学上的首次应用 冻干了一批生物器官1932年引入真空设备 在生物制品 药剂以及食品领域迅猛发展1935年干燥的过程采用主动加热 开始应用到工业生产1965年首先采用冻干技术制备出金属超细粉末如今在超导材料 超细金属粉末 精细陶瓷 催化剂 高能电池以及薄膜材料等领域都得到了广泛的应用 孙启达 冷冻干燥超细粉体技术及应用 M 化学工业出版社 2006 HistoryofFreeze drying 10 PPT学习交流 2 11 PPT学习交流 2 Phasediagramofsalt watersystem 12 PPT学习交流 2 Highlyelasticgrapheneoxide epoxycompositeaerogelsviasimplefreeze dryingandsubsequentroutinecuring ShibingYeetal J Mater Chem A 2013 1 3495 3502 SEMimagesof aandb GOAand candd GEA 9 13 PPT学习交流 2 MultifunctionalGraphene Platinum Nafion 全氟磺酸 Hybrids LuisEstevezetal J Am Chem Soc 2011 133 6122 6125 MultifunctionalGraphene Platinum NafionHybridsviaIceTemplating 14 PPT学习交流 2 JustinE Silpe etal Langmulr 2013 29 8782 8787 Freeze drying AntibubblesfabricatedbyFreeze dryingmethod 15 PPT学习交流 2 Freeze dryingsynthesisofLi3V2 PO4 3 Ccathodematerial Theas preparedmaterialshowsauniformparticlesizedistributionandtheparticlesizeismuchsmallerthan300nm thecompositedeliveredareversiblecapacityof125 2mAhg 1withoutobviouslyfadingafter100cycles QiaoYQ WangXL MaiYJ etal JournalofAlloysandCompounds 2012 536 132 137 16 PPT学习交流 2 徐如人 庞文琴 霍启升 无机合成与制备化学 M 高等教育出版社 2009 Prepareultra finepowder 17 PPT学习交流 2 Adavantages Canbeobtainedinahomogeneousmixtureofthecomponentsinsolution suitableforaddingtracecomponents synthesizecomplexfunctionalceramicmaterialsnanoparticles Sizeofnanoparticlesrangefrom1nmto50nm Easytooperateandgoodinthepreparationofhighpurityceramicmaterial Disadvantages Efficiencyisrelativelylow corrosivegasimpactthelifeoftheequipment 18 PPT学习交流 2 TheprincipleofFreeze dryingtechniqueSynthesisofAdvancedMaterialsbyFreeze dryingtechniquehasmanyAdvantages template freesimpleretaintheoriginalstructurescalablefabricationEnlightenment newwineinanoldbottle newconceptsinanoldframework 19 PPT学习交流 2 孙启达 冷冻干燥超细粉体技术及应用 M 化学工业出版社 2006徐如人 庞文琴 霍启升 无机合成与制备化学 M 高等教育出版社 2009 HanY XuZ GaoC Ultrathingraphenenanofiltrationmembraneforwaterpurification J AdvancedFunctionalMaterials 2013 EstevezL KelarakisA GongQ etal Multifunctionalgraphene platinum nafionhybridsviaicetemplating J JournaloftheAmericanChemicalSociety 2011 133 16 6122 6125 MecklenburgM SchuchardtA MishraYK etal Aerographite UltraLightweight FlexibleNanowall CarbonMicrotubeMaterialwithOutstandingMechanicalPerformance J AdvancedMaterials 2012 24 2