简介：凯迪拉克于近日推出了一款名为XTSPlatinum的概念车。新车展示了未来新一代凯迪拉克豪华轿车的设计理念。

简介：Resultsobtainedfromthewide-spacedfloodplainsedimentsindicatethattheabundancesofPtandPdinfloodplainsedimentsare0.46ng/gand0.40ng/g,respectively.Threegeochemicalprovinces.Yunnan-Guizhou,Xinjiang-GansuandTibetofPtandPdwithacontentof0.8ng/g,weredelineated.

简介：国际铂金协会（PlatinumGuildInternational简称PGI）是一个国际性非盈利组织，致力于在全球范围内创建、发展并巩固铂金市场，为消费者和珠宝业者提供相关信息、专业知识以及激发消费者对铂金首饰的向往，从而促进产品的开发和销售。

简介：InthispapertheseparationofbasemetalsFe,Co,NiandCufromtheplatinummetalsonacationexchangercolumnwasstudies.Theconvenientseparationconditionsare0.5mol·dm^-3NaCl,pH=2.TherecoveryefficiencyofRhis98%.

简介：点亮灵感，启动心情对话。

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简介：Anodesusedfordirectmethanolfuelcells(DMFCs)werefabricatedbymagnetronsputteringprocess.Ahouse-madeplasmasputteringsystemwasusedtodepositPtandPtRuontoun-catalyzedgasdiffusionlayers(GDLs)atdifferentradiofrequency(RF)powersandsputteringgaspressures.ThethinfilmcatalystlayerswerecharacterizedbyX-raydiffraction,energydispersiveX-rayanalysis,andX-rayphotoelectronspectroscopy.Thesputteredanodeswereassembledincustom-mademembraneelectrodeassemblies(MEAs)withacommercialcathodeandtheelectricalperformanceofthesinglecellweretestedunderpassivemethanolsupply,ambienttemperatureandair-breathingconditions.TheelectrochemicalperformanceoftheanodespreparedwithPtRualloywascomparedwithareferenceanodesputteredwithPtonly.X-raydiffractionandX-rayphotoelectronspectroscopyrevealedthatplatinumandrutheniumexistedasaformofalloy.ThecellpolarizationmeasurementsshowedthatallthePtRualloycatalystshadbetterelectrochemicalperformancethanthePt_1catalyst,andthePt_(0.43)Ru_(0.57)catalystachievedthebestperformance.

简介：Inthiswork,ultrasonicirradiationanddestabilizersolventwereusedfordestabilizingcolloidalplatinumdispersions.Thestabilizedplatinumnanoparticleswerepreparedinw/omicroemulsionsystemscomposedofsodiumbis-(2-ethylhexyl)sulfosuccinate(AOT)andfourdifferentsolvents,namely,cyclohexane,n-hexane,n-heptane,andn-nonane.TherecoveryprocessofPtnanoparticlesfromthecolloidalsystemswasperformedbyexposingthecolloidalsamplestoultrasonicirradiationandapplyingvariousdestabilizingsolvents.AnalysisofUV-visiblespectraconfirmsthatthequantityofPtnanoparticlesremovedfromthesuspensiondependsonthelengthoftimeoftheultrasonicirradiationandthenatureofthemicroemulsionoilphase.Acriticaltimefortheultrasonicirradiationhasbeenintroducedforthephaseseparationofcolloidalsystems.Toperformthesolventstudy,fourdestabilizersolvents,namely,dioxane,ethylacetate,diethylether,andtetrahydrofuran,wereusedforbreakingthecolloidalsuspensionofplatinumnanoparticles.Basedonthe’goodsolvent’and’poorsolvent’idea,itisverifiedthattheeffectofthedestabilizersolventsontheaggregationprocessfollowsthefollowingorder:tetrahydrofuran>ethylacetate>dioxane>diethylether.

简介：Platinum-basedanticanceragentsarewidelyusedasfirst-linedrugsincancerchemotherapyforvarioussolidtumors.However,greatsideeffectsandoccurrenceofresistanceremainasthemajordrawbacksforalmostalltheplatinumdrugsdeveloped.Toconquertheseproblems,newstrategiesshouldbeadoptedforplatinumdrugbasedchemotherapy.Modernnanotechnologyhasbeenwidelyemployedinthedeliveryofvarioustherapeuticsanddiagnostic.Itprovidesthepossibilityoftargeteddeliveryofacertainanticancerdrugtothetumorsite,whichcouldminimizetoxicityandoptimizethedrugefficacy.Here,inthisreview,wefocusedontherecentprogressinpolymerbaseddrugdeliverysystemsforplatinum-basedcombinationtherapy.

简介：Silica-bound15-Crown-5,18-Crown-6withaspacerofpropyloxymethylandtheirplatinumcomplexeshavebeensynthesized.Itwasfoundthattheywereefficientcatalystsforthehydrosilylationofolefmswithtriethoxysilaneinthetemperaturerangeof60to130℃.

简介：Thepresentpaperrepresentsthesynthesesofpolypropyloxymethyldithia15-crown-5and18-crown-6supportedonsilicaandtheirplatinumcomplexes.Theplatinumcomplexesareeffectivecatalystsforthehydrosilylationofolefinswithtriethoxysilane.Theinfluencesoftemperature,amountofplatinumcomplexesusedandthenatureofolefinsusedonthecatalyticactivityofthecomplexesarealsoinvestigatedinthispaper.

简介：Silica-boundmercaptoselenaether-containingsilsesquioxaneanditsplat-inumorrhodiumcomplexweresynthesizedfromγ-(2,3-epithiopropyl)propyltrimethoxysi-laneviaring-openingreactionwithbis(2-hydroxyethyl)sclenide,followedbyhydrolysisandimmobilizationonfumedsilica,andthenreactingwithpotassiumchloroplatiniteorrhodiumchlorideinacetoneundernitrogenatmosphere.Itwasfoundthattwonoblemetalcomplexescancatalyzethehydrosilylationofolefinswithtriethoxysilaneeffectively.Theinfluencesoftemperature,theamountofcomplexused,thenatureofolefinoncatalyticactivitywereinvestigated.

简介：Acrylateterpolymer-boundSe,Nbidentateligandwassynthesizedfromthesidechainchlorineofcopolymerandβ-dimethylamino-β′-hydroxyl-diethylselenoether.Thepolymer-supportedplatinumcomplexexhibitedhighcatalyticactivityinthehydrosilylationofolefinswithtriethoxysilane.

简介：ＩｎｔｒｏｄｕｃｔｉｏｎＳｅｌｅｎｏｅｔｈｅｒｐｌａｔｉｎｕｍｃｏｍｐｌｅｘｅｓａｓａｎｅｗｋｉｎｄｏｆｈｙｄｒｏｓｉｌｙｌａｔｉｏｎｃａｔａｌｙｓｔｈａｖｅｂｅｅｎｄｒａｗｎｍｕｃｈａｔｅｎｔｉｏｎｒｅｃｅｎｔｌｙ．Ａｓｅｒｉｅｓｏｆｓｅｌｅｎｏｅ...

简介：Thechemistryofthethiacrowns,especially,ofthepolymer-supportedthiacrowns,hasnotbeendevelopedtotheextendofthecrownsorazacrowns.Veryfewfunctionalizedthiacrowncompundshavebeenprepared.Nopaperconcerningthepolymer-supportedthiacrownsplatinumcomplexesandtheircatalyticbehaviorhasbeenpublishedyet.Inthispaper,thesynthesisoffumedsilica-supportedpolyundecyloxymethyl-1,4-dithia-7,10,13-trioxacyclopentadecanesiloxaneandsilica-supportedpoly-undecyloxymethyl-1,4-dithia-7,10,13,16-tetraoxacyclooctadecanesiloxane,aswellastheirplatinumcomplexes,andthecatalyticactivityofthecomplexesforthehydrosilylationofolefinswithtriethoxysilanearereported.

简介：Anewtypeofseleniouspolymer,silica-boundpolybispropoxyethyl-selenidesilsesquioxane,anditsplatinumcomplexweresynthesizedfrombis-allyloxyethylselenideviahydrosily-lationwithtriethoxysilane,followedbyimmobilizedonfumedsilica,andthenreactingwithpotassiumchloroplatiniteundernitrogenatmosphereinacetone.Itwasfoundthattheplatinumcomplexcancatalyzethehydrosilylationofolefinswithtriethoxysilaneeffec-tivelyTheeffectsofthenatureofthesubstrate,theamountofcomplexused,andthereactiontemperatureonthecatalyticactivitywereinvestigated.

简介：Ru(bpy)_(3~(2+))electrochemiluminescence(ECL)wasappliedtodeterminationofrutin.ECLintensityofRu(bpy)_(3~(2+))couldbeenhancedinthepresenceofrutininbasicsolutiononplatinumelectrode.AtpH9.9,lightemissionintensitywasfoundtobelinearwithrutinintherangeof1-50mmol/L.

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简介：在自我组织的TiO2nanotubes(Pt-TiO2/Ti)上支持的铂nanoparticles用cathodic减小跟随的电气化学的阳极的氧化被准备。结构和Pt-TiO2/Tielectrocatalyst的化学自然被X光检查衍射(XRD)和扫描电子显微镜学(SEM)调查。XRD和SEM结果在nanotubularTiO2上显示铂的存在。磅存款的稳定性被周期的voltammetry也在0.5mol/LH2SO4答案调查。当退火了到锐钛矿时，Pt-TiO2/Ti催化剂的electrocatalytic活动在甲醇的电镀物品氧化期间展出改进效果。Pt-TiO2/Tielectrocatalyst上的甲醇氧化的连续周期的voltammograms看唯一的electrocatalytic特征是否与体积磅催化剂上的甲醇氧化相比。当一部electroactive电影的形成发生到工作催化剂表面上时，这因为由自我组织的TiO2nanotubes上的磅粒子的磅(111)方面的吸附的公司的进一步快的氧化。

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