欢迎来到天天文库
浏览记录
ID:36604183
大小:6.68 MB
页数:91页
时间:2019-05-12
《硫属化合物和氧化物纳米材料的化学液相合成与机理研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、中国科学技术大学博士学位论文硫属化合物和氧化物纳米材料的化学液相合成与机理研究姓名:刘小燕申请学位级别:博士专业:无机化学指导教师:钱逸泰20090401摘要果发表在尬胞rC办P所.肋粥.(2009,114,213)上。4.设计了表面活性剂聚乙二醇(PEG)辅助的水热合成路线,选择CuCl作为铜源,氨水作为碱性介质,合成了三维的CuO片.片.球分级结构,CuO球的直径大约为3岬,每个微米球都是由无数的二维纳米片通过层层重叠生长模式组成的,这些纳米片的厚度大约为40Iun。而每个纳米片又是由很多更小的二维纳米片以边对边的方式聚集的。对CuO形貌的影响因素进行了系统的观察,
2、其中,PEG的浓度对形貌起着很关键的作用。另外,研究了CuO分级微米球的形成机理。关键词:CuS,纳米管,空心球,室温化学液相合成,NiTe2,单晶,纳米片,水热,Cu’0,纳米线,溶剂热,乙二醇还原,CuO,分级结构2ABSTRACTBaSedonthechemicals01ution—phasesyntllesis,tlle址nofthisdissenationistoexploretIlesynthesisofCuS,Nille2,Cu20,CuOnanomatenalsbyroomtemperaturechemicalsolutionroute,solVothe
3、maltechniqueandhy出othennalmethod.AchemicalsolutionroutehaSbeendeVelopedtoselectiVelypreparecoVellite(CuS)r姗otubesaIldhollownaIlospheresatr00mtemperatuI.e;Single-cr),stallineNiTb2nanoplates、Ⅳithmehexagonalsh印ehaVebeensynmesizedonala唱escaletllrou曲ahy出Dtlle衄甜method.W色ll—aligIleda丌aysofcupro
4、usoxide(Cu20)naIlowireshaVebeensyntllesizedbyanetllyIene百ycol-reducedprocess;Three-dimensionaJ(3D)CuOmerarctlicalmicrospheresktVebeenpreparedViaasimplehydrothennmroute.Themo叩hologies甜ld鼬nJcturesofaus—prep孤ednanomateria】sarecharacterizediIldetaj.1.AsystematiciIlVestigationhasbeencarriedou
5、ttounderstandⅡlef.actorsinnuencingthephaLsecompositiona11dmo印hology,aIldtheirfonIlationmech锄ismsareaJsobrienydiscussed.Themaincontentscanbesunlm撕zedaSfollows:1.AchemicalsolutionroutehaSbeendeVelopedtosynthesizeCuSnaIlostructuresthroughmeprecitationreactionofCuCl2。2H20,thiourea(Tu)andNaHC
6、03i11distilledwateratroomtemperature.Byregulatingt11econcentrationofTu,CuSn锄otubesandhollownanospheres、^,itlldi锄etersofloo-200m11暑lVebeenselectiVelyprepared.StnJcturalcharacterizationsindicatematbothnanotubes锄dhollowspheresarecomposedofCuSnallopanicles州t11di锄eterSofabout5—10m.Asystematic
7、inVestigationhaSbeencarriedoutt0wlderSt卸dtllefactorsinnuencingtlleCuSmo咄olog),.Tw0di恐rentroutesareidentifiedtoexplain恤fo肌ationoftllenanotubesa11dhollownanospheresherein.Itisconcludedt11atlowconcentrationofTUisfaVorablet0CuSnanotubesViat王letlliourea-copper(II)complexprecur
此文档下载收益归作者所有