简介：采用2步水热法合成了LaPO4∶Eu3＋-Fe3O4复合材料.在LaPO4∶Eu3＋-Fe3O4复合材料中,LaPO4∶Eu3＋为单斜晶相,呈纳米棒状,纳米棒的直径和长度分别为20-100nm和0.2-1μm;Fe3O4为正交晶相、呈20-30nm的颗粒状,Fe3O4粒子紧紧附着在LaPO4∶Eu3＋纳米棒的表面;样品的磁性和发光性质研究表明所合成的LaPO4∶Eu3＋—Fe3O4复合材料既具有发光性质又具有磁性.
简介：Tris)(η5-cyclopentadienyl-μ-carbonyl-iron)-μ3-nitrosylclusterwasobtainedfromthereactionofcyclopentadienyldicarbonylirondimerwithnitrogenmonoxideinxylene.Theclusterwascharacterizedbyelementalanalyses,IR,MSand1HNMR.Thecrystalstructureof[(η5-C5H5)(μ-CO)Fe]3(μ3-NO).C4H8OwasdeterminedbyX-raydiffractionanalysis.ItcrystallizesintheorthorhombicspacegroupPnma,a=9.053(2),6=10.545(2),c=22.525(4)A,V=2150.3(7)A3,Z=4,Dc=1.68g.cm-3;structuresolutionandrefinementbasedon1141reflectionswithI>3.0(I)(MoKa,A=0.71073A)convergedatR=0.0540.Theinfraredabsorptionbandat1325cm-1oftheμ3-NOinthecluster,whichisredshifted,showsthatμ3-NOisactivated.
简介：[Co3(1,2-S2C6H4)3(PPh3)3][CoBr3(DMF)].sol(1,sol=CHCl3,O(C2H5)2,H2O)wasobtainedfromthereactionofCoBr(PPh3)3withNa2(S2C6H4)inchloroform.TheCo3coreinthecationof1exhibitsametal-metalbondedisoscelestriangle,inwhichthetwolongerCo-CobondsarebothbridgedbyS2C6H4ligandsontwosidesofthetriangleplanerespectively,whilethebottomshortCo-CobondisbridgedbythethirdbidentateS2C6H4ligand.Aseriesofpolynu-clearcobaltclustercompoundswithphosphine,thiolateand/orsulphurligandswerepreparedbylowoxidationstateCo+withthiolatesinorganicsolvents.Thesetri-,tetra-,hexa-,heptanuclearclustercompounds1-8withvarioustypesofcrystalstructurescanbeviewedasthecondensedpolynuclearcobaltcomplexesthatthecobaltatomframeworkswithsulphurbridgedwerebuiltthroughthesmalltriangularunitsof[Co3S3nL3](n=1,2)withorwithout[CoL](L=PR3,Br,Cl,5-C5H5)fragments.
简介：HighactiveandstablegoldcatalystssupportedoncrystallineFe2O3andCeO2/Fe2O3werepreparedviathedeposition-precipitationmethod.ThecatalystwithaAuloadof1.0%calcinedat180°CshowedaCOconversionof100%at-8.9°C,whileAu/CeO2/Fe2O3convertedCOcompletelyat-16.1°C.Evenhavingbeencalcinedat500°C,Au/Fe2O3stillexhibitedsignificantcatalyticactivity,achievingfullconversionofCOat61.6°C.ThecatalystwithalowAuloadof0.5%couldconvertCOcompletelyatroomtemperatureandkepttheactivityunchangedforatleast150h.N2adsorption-desorptionmeasurementsshowthatthecrystallinesupportspossessedahighspecificsurfaceareaofabout200m2/g.CharacterizationsofX-raydiffractionandtransmissionelectronmicroscopyindicatethatgoldspecieswerehighlydispersedasnanoorsub-nanoparticlesonthesupports.Evenafterthecatalystwascalcinedat500°C,theAuparticlesremainedinanano-sizeofabout6―10nm.X-rayphotoelectronspectrarevealthatthesupportedAuexistedinmetallicstateAu0.ThemodificationofAu/Fe2O3byCeO2provedtobebeneficialtotheinhibitionofcrystallizationofFe2O3andthestabilizationofgoldparticlesindispersedstate,consequentlypromotingcatalyticactivity.
简介：归纳了从钛铁矿中分离铁和二氧化钛的方法,包括亚熔盐法、预氧化法、还原锈蚀法;其次,初步总结了目前国内外制备Fe3O4磁性纳米颗粒和TiO2纳米粒子的方法。最后,对Fe3O4/TiO2复合材料的制备方法包括溶胶-凝胶法、微乳液法、均匀沉淀法作了梳理。Fe3O4/TiO2复合纳米材料很好地解决了单独使用TiO2作为废水处理催化剂,在实际应用过程中易随水流失,难以回收利用的问题,具有一定的实用性。
简介：Anovelflower-likehydratedmagnesiumcarbonatehydroxide,Mg_5(CO_3)_4(OH)_2·4H_2O,withmicro-structurecomposedofindividualthinnano-sheetswassynthesizedusingafacilesolutionroutewithouttheuseoftemplateororganicsurfactant.Reactiontimehasanimportanteffectonthefinalmorphologyoftheproduct.Themicro-structureandmorphologyofMg_5(CO_3)_4(OH)_2·4H_2OwerecharacterizedbymeansofX-raydiffractometry(XRD),field-emissionscanningelectronmicroscopy(FE-SEM).Brunauer-Emmett-Teller(BET)surfaceareasofthesampleswerealsomeasured.Theprobableformationmechanismofflower-likemicro-structurewasdiscussed.ItwasfoundthatMg_5(CO_3)_4(OH)_2·4H_2Owithflower-likemicro-structurewasanovelandefficientcatalystforthesynthesisofdiphenylcarbonate(DPC)bytransesterificationofdimethylcarbonate(DMC)withphenol.
简介：Twooxo-vanadium(IV)complexes,[VO(C2O4)(2,2′-bipy)(H2O)]·C2H5OH(1)andVO(C2O4)(phen)(H2O)(2),where2,2′-bipy=2,2′-bipyridyl,phen=1,10-phenanthroline,weresynthesizedaspotentialfunctionalmodelsofvanadiumhaloperoxidases(VHPOs)inmixedsolventofethanolandwateratroomtemperature.Thecomplexeswerecharacterizedbyelementalanalysis,infrared(IR),UV-VisandX-raycrystallography.Structuralanalysesshowedthatvanadiumatomwascoordinatedbyaterminaloxygen,oneoxygenatomfromcoordinatedwater,twooxygenatomsfromthecarboxylategroupofoxalicacid,andtwonitrogenatoms(N1andN2)from2,2′-bipy/phen.Centralvanadiumatomsincomplexes1and2werebothinadistorted-octahedralenvironment,andsomeintermolecularhydrogenbondinglinkageswerealsoobservedineachcomplex.BrominationreactionactivityofthetwocomplexeswasevaluatedwithphenolredasorganicsubstrateinthepresenceofH2O2,Br-andphosphatebuffer,indicatingthattheycanbeconsideredasapotentialfunctionalmodelofVHPO.Inaddition,thermalanalysiswasalsoperformedanddiscussedindetail.
简介：Tetrabutylammoniumorpotassiumsaltsoforganometalllicderivativesoflacunarypolyanion(RM)3P2W15O59^n-(RM=CpTi,CpZr,C4H7O2SnorC5H9O2Sn)havebeenpreparedandstructurallycharacterizedbyelementalanalysis,IR,UV-Vis,^1HNMRand^183WNMRspectroscopies.Thetitlecomplexesexhibitantitumoractivityinvitro.
简介：ThecomplexK3H4GeW9V3O40·8H2OcrystallizedinamonocliiniesystemwithspacegroupP2,Mr=2784.67,a=11.099（3）,b=16.452（4）,c=13.534（4）,β=108.14°,Z=2,V=2348.493,F（000）:2456,μ=239.7cm-1,De=3.932g/cm3.ThefinalR=0.083for4528non-zeroreflexions.ThestructureofanionsGeW9V3O40andGeW9O34belongstoA--type.
简介：Thecrystalandmolecularstructuresof[(C3H7O)2PS2]2(CCDCNo.217201)weredeterminedbymeansofX-raycrystallography.ItcrystallizedinatriclinicsystemwithspacegroupP1^-andlatticeparametersa=0.82794(3)nm,b=0.84764(2)nm,c=0.85034(3)nm,α=97.78(3)°β=110.77(3)°,γ=94.95(3)°,V=0.54701(9)nm^3,Z=1.Inthismolecule,thetwodiisopropyldithiophosphategroups,[(C3H7O)2PS2]2,whichareparalleltoeachother,arelinkedbyanS--Sbondandthereexistinversioncentersinthemolecule,Inthestructure,theP=Sbondsinthetwodithiophosphateunitsaretrans-orientedtoeachother.
简介：利用室温液相还原、晶种生长的方法,成功的制备了大小形貌均一、性能稳定且具有磁性的Fe3O4@Cu2O复合纳米粒子,并且对制备的Fe3O4@Cu2O纳米粒子进行了光催化性能的研究.在以紫外光为光源的照射下,合成的Fe3O4@Cu2O纳米粒子对有机染料甲基蓝溶液起到很好的降解作用.更重要的是,在外加磁场的作用下,Fe3O4@Cu2O纳米粒子容易回收,具有良好的可循环利用性能.
简介：Thenanomaterialsoftenexhibitveryinterestingelectrical,optical,magnetic,andchemicalproperties,whichcannotbeachievedbytheirbulkcounterparts[1-7].Thedevelopmentofuniformnanometersizedparticleshasbeenintensivelypursuedbecauseoftheirtechnologicalandfundamentalscientificimportance[8-15].Itissignificantthatnanostructuredmaterialscanbecontrollablyassembledintotherequiredgeometryontosubstrates,becomingthebasisofthenextgenerationofcomponentsanddevices[16-31].Thedevelopmentofnewmethodsandstrategiesfororganizingthenanoparticlebasicbuildingblocksintothedesiredstructuresisrequired.Superlatticesmadefromthesebuildingblocksgiveustheopportunitytostudynotonlythepropertiesoftheindividualbuildingblocks,butalsocollectiveeffects.Thesuperparamagneticironoxidenanocrystals(NCs)havebeenusedinthefieldsofbio-medicine,ferrofluids,refrigerationsystem,catalysis,particularlyinmagneticresonanceimaging,tissueengineering,anddrugdeliveryapplications[32-42].
简介：在水热条件下,制备了一种基于Keggin型多金属氧酸盐的银配合物[Ag（10）（NCA）4（PW9ⅥW3ⅤO（40））（H2O）4].通过元素分析、红外光谱和X-射线单晶衍射方法确定了该配合物的晶体结构.在合成过程中,3-（2-吡啶羧酸）酰胺-吡嗪配体（L）分解成烟酸NCA.结构分析表明：该化合物属于三斜晶系,P1空间群,晶胞参数a=1.18874（9）nm,b=1.24950nm,c=1.41103（10）nm,α=73.712（2）°,β=66.720（2）°,γ=83.467（2）°,V=1.8479（2）nm3,Z=1,R1=0.0731,ωR2=0.1974.配合物中含有一种六核银亚单元[Ag6（NCA）4]（2＋）,不同亚单元间通过配位水的氧原子连接形成一维双链结构,而一维双链进一步通过Ag—N键连接形成二维层状结构,二维层则通过[PW9ⅥW3ⅤO（40）]（6-）多阴离子形成最终的三维金属有机框架.标题配合物修饰的碳糊电极对H2O2和KNO2还原有好的电催化活性,而且该配合物对降解亚甲基蓝、罗丹明B分子有较高的光催化效率.
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![Crystal Structure and Bioactivity of Complex [Gd（<b style='color:red'>C</b>10H9N2<b style='color:red'>O</b><b style='color:red'>4</b>）（<b style='color:red'>C</b>10H8N2<b style='color:red'>O</b><b style='color:red'>4</b>）（H2<b style='color:red'>O</b>）<b style='color:red'>3</b>]2·phen·<b style='color:red'>4</b>H2<b style='color:red'>O</b>](/image/thesis1 "Crystal Structure and Bioactivity of Complex [Gd（<b style='color:red'>C</b>10H9N2<b style='color:red'>O</b><b style='color:red'>4</b>）（<b style='color:red'>C</b>10H8N2<b style='color:red'>O</b><b style='color:red'>4</b>）（H2<b style='color:red'>O</b>）<b style='color:red'>3</b>]2·phen·<b style='color:red'>4</b>H2<b style='color:red'>O</b>")
![Synthesis and characterization of tris（η5-cyclopentadienyl-μ-carbonyliron）-μ<b style='color:red'>3</b>-nitrosyl cluster:X-ray structure of[（η5-<b style='color:red'>C</b>5H5）（μ-<b style='color:red'>CO</b>）Fe]<b style='color:red'>3</b>（μ<b style='color:red'>3</b>-NO）.<b style='color:red'>C</b><b style='color:red'>4</b>H8<b style='color:red'>O</b>](/image/thesis2 "Synthesis and characterization of tris（η5-cyclopentadienyl-μ-carbonyliron）-μ<b style='color:red'>3</b>-nitrosyl cluster:X-ray structure of[（η5-<b style='color:red'>C</b>5H5）（μ-<b style='color:red'>CO</b>）Fe]<b style='color:red'>3</b>（μ<b style='color:red'>3</b>-NO）.<b style='color:red'>C</b><b style='color:red'>4</b>H8<b style='color:red'>O</b>")
![Imidazole Coordinated Sandwich-type Antimony Polyoxotungstates Na9[ {Na（H=<b style='color:red'>O</b>2}<b style='color:red'>3</b>{M（<b style='color:red'>C</b><b style='color:red'>3</b>H<b style='color:red'>4</b>N2）}<b style='color:red'>3</b>（ Sb W9<b style='color:red'>O</b>33）2]·xH=<b style='color:red'>O</b>（M=Ni^Ⅱ, <b style='color:red'>Co</b>^Ⅱ, Zn^Ⅱ, Mn^Ⅱ）](/image/thesis3 "Imidazole Coordinated Sandwich-type Antimony Polyoxotungstates Na9[ {Na（H=<b style='color:red'>O</b>2}<b style='color:red'>3</b>{M（<b style='color:red'>C</b><b style='color:red'>3</b>H<b style='color:red'>4</b>N2）}<b style='color:red'>3</b>（ Sb W9<b style='color:red'>O</b>33）2]·xH=<b style='color:red'>O</b>（M=Ni^Ⅱ, <b style='color:red'>Co</b>^Ⅱ, Zn^Ⅱ, Mn^Ⅱ）")
![[<b style='color:red'>Co</b><b style='color:red'>3</b>（1,2-S2<b style='color:red'>C</b>6H<b style='color:red'>4</b>）<b style='color:red'>3</b>（PPh<b style='color:red'>3</b>）<b style='color:red'>3</b>]+, A basic triangle unit of some polynuclear molecules](/image/thesis4 "[<b style='color:red'>Co</b><b style='color:red'>3</b>（1,2-S2<b style='color:red'>C</b>6H<b style='color:red'>4</b>）<b style='color:red'>3</b>（PPh<b style='color:red'>3</b>）<b style='color:red'>3</b>]+, A basic triangle unit of some polynuclear molecules")
![Syntheses, Crystal Structures and Characterization of Two Zeotype Crystals of K<b style='color:red'>4</b>[Cr30（H2<b style='color:red'>O</b>） <b style='color:red'>3</b>（OOCH） 6] 2[ P2W18<b style='color:red'>O</b>62]· 9.5H2 <b style='color:red'>O</b> and K<b style='color:red'>4</b>[ Cr<b style='color:red'>3</b><b style='color:red'>O</b>（ H2<b style='color:red'>O</b>）<b style='color:red'>3</b>（ OOCH）6 ]2[ H<b style='color:red'>3</b> P2 W17<b style='color:red'>Co</b>（H2<b style='color:red'>O</b>） <b style='color:red'>O</b>61]· 20H2<b style='color:red'>O</b>](/image/thesis6 "Syntheses, Crystal Structures and Characterization of Two Zeotype Crystals of K<b style='color:red'>4</b>[Cr30（H2<b style='color:red'>O</b>） <b style='color:red'>3</b>（OOCH） 6] 2[ P2W18<b style='color:red'>O</b>62]· 9.5H2 <b style='color:red'>O</b> and K<b style='color:red'>4</b>[ Cr<b style='color:red'>3</b><b style='color:red'>O</b>（ H2<b style='color:red'>O</b>）<b style='color:red'>3</b>（ OOCH）6 ]2[ H<b style='color:red'>3</b> P2 W17<b style='color:red'>Co</b>（H2<b style='color:red'>O</b>） <b style='color:red'>O</b>61]· 20H2<b style='color:red'>O</b>")
![Vanadium Haloperoxidases Model Compounds： Synthesis, Structural Characterization and Mimic Catalytic Bromination Activity of [VO（<b style='color:red'>C</b>_2<b style='color:red'>O</b>_<b style='color:red'>4</b>）（2,2′-bipy）（H_2<b style='color:red'>O</b>）]·<b style='color:red'>C</b>_2H_5OH and VO（<b style='color:red'>C</b>_2<b style='color:red'>O</b>_<b style='color:red'>4</b>）（phen）（H_2<b style='color:red'>O</b>）](/image/thesis11 "Vanadium Haloperoxidases Model Compounds： Synthesis, Structural Characterization and Mimic Catalytic Bromination Activity of [VO（<b style='color:red'>C</b>_2<b style='color:red'>O</b>_<b style='color:red'>4</b>）（2,2′-bipy）（H_2<b style='color:red'>O</b>）]·<b style='color:red'>C</b>_2H_5OH and VO（<b style='color:red'>C</b>_2<b style='color:red'>O</b>_<b style='color:red'>4</b>）（phen）（H_2<b style='color:red'>O</b>）")
![Crystal Structure of Bis （0, <b style='color:red'>O</b>＇-diisopropyl dithiophosphate） ： [（<b style='color:red'>C</b><b style='color:red'>3</b>H7<b style='color:red'>O</b>）2PS2]2](/image/thesis14 "Crystal Structure of Bis （0, <b style='color:red'>O</b>＇-diisopropyl dithiophosphate） ： [（<b style='color:red'>C</b><b style='color:red'>3</b>H7<b style='color:red'>O</b>）2PS2]2")
![银配合物[Ag（10）（NCA）<b style='color:red'>4</b>（PW9ⅥW<b style='color:red'>3</b>Ⅴ<b style='color:red'>O</b>（40））（H2<b style='color:red'>O</b>）<b style='color:red'>4</b>]的合成、结构与性质](/image/thesis17 "银配合物[Ag（10）（NCA）<b style='color:red'>4</b>（PW9ⅥW<b style='color:red'>3</b>Ⅴ<b style='color:red'>O</b>（40））（H2<b style='color:red'>O</b>）<b style='color:red'>4</b>]的合成、结构与性质")
![[Mn<b style='color:red'>3</b>Ⅱ(CH<b style='color:red'>3</b>COO)6(H2<b style='color:red'>O</b>)<b style='color:red'>4</b>·(H2<b style='color:red'>O</b>)2]n的合成、结构与磁性研究](/image/thesis18 "[Mn<b style='color:red'>3</b>Ⅱ(CH<b style='color:red'>3</b>COO)6(H2<b style='color:red'>O</b>)<b style='color:red'>4</b>·(H2<b style='color:red'>O</b>)2]n的合成、结构与磁性研究")
