简介：ThecomparisonoftraditionalroutetothesimplesynthesisofCdSesemiconductornanocrystals,withthehydrothermalroute,wherethereactiontemperaturecanbereachedat220℃,waspresentedinthispaper.Theopticalpropertiesofthewater-solubleCdSequantumdotsfromthehydrothermalandtraditionalwerecharacterizedbyUV-visabsorptionspectra,photoluminescence(PL)spectraandHRTEMtechniques.TheHRTEMresultsshowthatwiththeincreaseofthereactiontemperature,thenaocrystaldefectsdecreased.TheUV-visabsorptionpeakmovedtolongwave-lengthwiththeincreaseofreactiontemperature.Thephotoluminescence(PL)spectrashowthatthewavelengthofthebrightpoint,thePLquantumyield(QY)increasedwhenthenanocrystaldefectsdecreased.Theopticalpropertydataconfirmthathydrothermalrouterisapreferablemethodtotraditionalrouteforpreparingwater-solubleCdSequantumdots.

简介：钠火山灰成胶状黏土，石墨，轻钙碳酸盐和硅藻土为为甲基橘子(瞬间)的移动被测试的基于矿物质的多孔的成粒的材料(MPGM)被用作父母矿物质，cationic染料，从水的答案。吸附能力在改变的起始的pH，吸附物剂量，染料集中，温度，反应时间，和静态的新生的条件下面被评估。试验性的结果证明吸附瞬间的MPGM的最大的能力是超过80mg

简介：Dryseparationofironmineralfromlow-gradecoal-serieskaolininHubeiProvinceofChinawasinvestigated.ThestructureandchemicalcompositionofthekaolinoreweredeterminedbyX-raydiffraction（XRD）andX-rayFluorescence（XRF）analyses.Thenarrowparticlesizerangeclassification,drymagneticseparationandcalcinationwerecarriedouttoevaluatetheparticlesizedistribution,andtherelationbetweenthecontentofironandthewhiteness.Experimentalresultsrevealedthatthehighestcontentofiron（3.70%）inkaolinorewasintheparticlesizerangefrom60to74μm,andpyritewasthemainoccurrenceofironinthekaolinore.Drymagneticseparationshowedthattheremovalrateofironinkaolinorecouldbeincreasedobviouslyaftercalcination,andtherateofironremovalwas60%intheparticlesizerangefrom60to74μm.Aspyritecanbetransformedintohematitethroughcalcination,thermodynamicstudiesandXRDanalysisshowedthatthemaximumcontentofhematitewasobtainedat900℃,whichwouldbemorebeneficialtomagneticseparation.

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简介：六角形结构的单人赛水晶的镍硫化物nanorodshave的粉末在cetyltrimethyl综合了溴化铵(CTAB)/water/hexane/n-pentanol在热水的条件由下面的第四级的微乳液用尿素和二硫化碳的反应，作为硫化物，source.Single水晶的镍nanorods被是使用单人赛水晶的镍硫化物nanorods经由热分解综合了先锋。产品的形态学上的不同反应参数的影响是产品的investigated.Thestructure，形态学和磁性被X光检查衍射(XRD)描绘，传播电子显微镜(TEM)，thermogravimetric分析微分的扫描热量计(TGA-DSC)和颤动的样品磁强计(VSM)。磁性的大小的结果证明特定的浸透磁化(sigma_s)和nickelnanorods的coercivity价值(H_c)分别地是37.5emu/g和68.5Oe。

简介：AresearchonkineticsofAlevaporationfromliquidU—Alalloyswasmadeinavacuuminductionmelting（VIM）furnaceat1673—1843K.TheevaporationrateofAlwasfoundtobefirstorderwithrespecttoAlcontentinthemelt.TheoverallmasstransfercoefficientofAlwasdeterminedanditwasfoundthattheevaporationrateofAlincreasedwithincreasingtemperatures.TheapparentactivationenergyofAlevaporationat1673-1843Kwas171.5kJmol-1.ThevalueofmasstransfercoefficientofAlintheliquidphasewasestimatedtobe3.77×10-6,7.41×10-6,and9.40×10-6ms-1at1673,1753,and1843K,respectively.Meanwhile,ratedeterminingstepswerediscussedanditwasconcludedthattheevaporationrateofAlismainlycontrolledbyliquidphasemasstransfer.

简介：在polymetallic小瘤和海底山合作富人外壳的深海的矿物质是不仅由矿化作用而且由包含微生物(biomineralization)的生物学上驾驶的过程形成了。在polymetallic小瘤以内，免费生活并且形成biofilm细菌为锰免职提供矩阵，并且在海底山合作富人外壳中，coccolithophores代表为起始的锰免职充当简历种子的主导的有机体。这些(简历)矿物质是经济地重要的：锰是一个重要alloying部件和除了被使用的特殊的钢的钴形式部分，与另外的稀罕金属一起，在血浆屏幕，硬盘磁铁和混合汽车马达。在我们在这些金属的丰富的器官的矩阵的参予的理解的最近的进步可能为biotechnological应用的可行性研究提供基础。

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简介：在现在的学习，我们执行了-cyclodextrin的合成(用微波的-CD)functionalized金牌nanoparticles(AuNPs)帮助了在碱的媒介加热方法。CD的稳定的分散稳定的AuNPs在10.5的优化pH被获得。在这pH珍视CD的第二等的氢氧根组显示出的deprotonated向从而导致AuNP聚集的Pb2+离子的最高的chelating亲密关系。Pb2+在-CD-AuNP导致了聚集答案被比色的反应和紫外力的光谱学监视。TEM，DLS和FTIR分析被执行证实Pb2+离子在碱的条件下面导致了-CD-AuNPs的聚集行为。而且当时，在试验性的pH，向Pb2+离子的-CD-AuNP系统的反应是选择的与另外的介入的金属阳离子相比。

简介：Silicaaerogelmaterialsarewellrecognizedfortheirsuperinsulationperformanceandareregardedasoneofthehotcandidatestorevolutionizebuildinginsulation.Todate,highproductioncostrelatedtoexorbitantprecursorsaswellascumbrousmulti-stephydrophobizationprocesshasoftennarrowedthefieldofapplications.Inthiswork,granularsilicaaerogelmaterialsweresynthesizedbyextractingSiO2fromrecycledrichsiliconcoalgangue,followedbyone-stephydrophobizationandambientpressuredrying.Lightweight（about0.16g/cm3）andnanostructuralaerogelswereobtainedthroughthisroute.Theyexhibita3Dopenporousmicrostructurewitharound600cm2/gsurfaceareaand20nmoftheaverageporediameter,thermalconductivityof4-5mmpackedgranulesis20-25mW/（m·K）,whichwasprovedbybothguardedhotplateandhot-wiretransientmethods.Thisstudyoffersanewfacilerouteforthesynthesisofsilicaaerogelfromrecycledsolidwastecoalgangueandsuggestsamethod,whichmayleadtoacostreductionintermsofindustrialproduction.

简介：三件kaolinite样品申请了纸涂层从美洲(KA)被收集，巴西(KB)，和中国(KC)分别地。参数象Si-O和Al-O的平均契约长度那样(l(Si-O)和l(Al-O)),有四面的旋转角度()，有四面的变平的角度变化()并且八面的变平角度()对理想的角度比较，粒子层厚度(T)和基础z折皱(z)被XRD和Rietveld方法分析。试验性的结果显示了那zKA>zKC>zKB。KB有常规结构，KA有混乱结构，KA>KC>KB,KA>KC>KB,和KA>KB>KC。KA有不稳定的四面体和八面体。KB和KC分别地有稳定的四面体和八面体。在制造的过程，kaolinite结构可以与不稳定的四面体和八面体从地方被打破。l(Si-O)KA>l(Si-O)KB>l(Si-O)KC和l(Al-O)KA>l(Al-O)KC>l(Al-O)KB。仅仅考虑了的，是契约长度的效果，KA可以最容易在制造被打破。与KA和KB的契约长度相比，KB和KC的Si-O，和Al-O可以是容易分别地碎。TKA

简介：TiB2ceramicspowderwassynthesizedfromB2O3-TiO2-Mgsystem.TheeffectsofTiB2additionasdiluentonthecombustionsynthesisprocesswereinvestigated.TheresultsofthermodynamiccalculationandexperimentsshowthattheincreaseofTiB2contentrangingfrom0to20wt%canreducetheadiabatictemperatureTadfrom3100Kto2896KandcombustiontemperatureTcfrom2139Kto1621Krespectively.TheparticlesizeandhalfwidthoftheparticledistributionarealsoincreasedwiththeadditionofTiB2increasingfrom0to20wt%.ThecombustionproductisamixtureofTiB2,MgO,andotherintermediatephases.TheleachedproductcontainsmainlyTiB2,TiO2andTiN,anditsoxygencontentis7.77wt%.

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简介：来临三维(3-D)打印了技术在设定的多孔的钛(Ti)的制造提供大可能性植入。然而，打印Ti的bioinert性质提出一个突出的问题。混合微弧的氧化并且热水(MAO-HT)多孔的金属上的处理能生产multi-scaled层次矫形植入，为3-D的表面修正的出现大潜力打印了植入。在这研究，有毛孔的圆柱的多孔的Ti6Al4V(Ti64)脚手架640缩放吗？？

简介：AseriesofCd1-xZnxS/K2La2Ti3O10compositesweresynthesizedviaasimpleco-precipitationmethod.ThepreparedsampleswerecharacterizedbyX-raydiffraction（XRD）,scanningelectronmicroscopy（SEM）,X-rayenergydispersivespectroscopy（EDX）,ultraviolet-visiblediffusereflection（UV-Vis）,X-rayphotoelectronspectroscopy（XPS）andphotoluminescence（PL）measurements.ThecompositestructuresconsistedofCd1-xZnxSnanoparticlesevenlydistributedonthesurfaceofK2La2Ti3O10.TheabsorptionedgeofK2La2Ti3O10shiftedtothevisiblelightregionuponintroductionoftheCd1-xZnxSnanoparticles.Thephotocatalyticactivitiesofthecatalystswereevaluatedbyhydrogenproductionundervisiblelightirradiation.ThepreparedCd0.8Zn0.2S（30wt%）/K2La2Ti3O10exhibitedhigherphotocatalyticactivity,evolving6.92mmol/gH2undervisiblelightirradiationfor3h.ThepromotedphotocatalyticactivityofthecompositeswasattributedtothesynergisticeffectbetweenCd1-xZnxSandK2La2Ti3O10,whichresultedinenhancedseparationofphotogeneratedelectronsandholes.