学术论文写作分析

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1、《学术论文写作》课程论文题目ThepreparationofTiO2aerogelbyambientpressuredryinganditsperformanceofphotocatalyticdegradationofoilywastewater学生姓名学　号教学院系研究生学院专业年级2013级材料化学工程指导教师职　称副教授单　　位辅导教师职称单　　位材料科学与工程学院完成日期2013年12月1日摘要以钛酸四丁酯(TBT)为原料,利用溶胶–凝胶法、小孔干燥和老化液浸泡工艺在常压下制备出了完整、无开裂的TiO2气凝胶块体.研究了小孔干燥和老化液浸泡技术对

2、常压制备TiO2气凝胶的影响,研究结果表明:小孔干燥能够降低TiO2醇凝胶干燥过程中所受的不均匀收缩应力,而TBT醇溶液和TEOS醇溶液浸泡处理,能够增强凝胶的骨架强度,有助于减轻凝胶在干燥过程中的收缩和开裂,制备出完整的高性能TiO2气凝胶块体.基于小孔干燥和TEOS乙醇溶液浸泡老化处理,制备得到的高性能完整TiO2气凝胶块体,其密度为0.184g/cm3,比表面积达389.5m2/g.用高温煅烧后的锐钛矿相TiO2气凝胶催化降解渤海原油污水模拟溶液,在TiO2气凝胶加入量为400mg/L的情况下,90min内对渤海原油污水的去除率最高可达91%.关键词

3、：TiO2气凝胶;常压;小孔干燥;老化液;光催化;原油降解18AbstractAdvantageMethodThemonolithicTiO2aerogelwassucessfullysynthesizedatambientpressurethroughSol-GeltechniquewithTBTastherawmaterialanditsphotocatalystpropertyfordegradationoftheaqueousemulsionofcrudeoilintheBohaiSeawasinvestigated.Duringtheambien

4、tdryingprocess,agingliquorandpinholedryingtechnologywereObjectivefoundtobecriticaltothepropertiesofTiO2aerogels.ItwasshownthatthepinholedryingwasfavorableinreducingtheasymmetricstressontheframeworkofTiO2gelinthedryingprocessandtheTEOS-EthanolorTBT-Ethanolsolutionastheagingliquorfo

5、rTiO2wet-gelcouldenhancethestrengthofTiO2gelskeleton.Combiningtheseeffects,thecrackingproblemofTiO2alcoholgelinthedryingcouldbesolvedandthehigh-performanceTiO2aerogelmonolithwaseventuallyachieved.ThemostintegratedTiO2aerogelblockexhibitedlowdensity(0.184g/cm3)andhighspecificconclu

6、sionspecializedvocabularyPresenttense&passivevoicesurfacearea(389.5m2/g).Bycalcinationsathightemperature,theTiO2aerogelschangedfromamorphoustoanatasestructure.Thephotocatalyticpropertiesoftheheat-treatedTiO2aerogelswereinvestigatedviathedegradationexperimentfortheaqueousemulsionof

7、crudeoilintheBohaiSea.Theresultsofphotocatalyticexperimentsshowedthatthecatalyticdegradationratewasupto91%withtheadditionofTiO2aerogelof400mg/L.Keywords:TiO2aerogel;ambientpressure;pinholedrying;ageing;photocatalystic;crudeoildegradation18Contents摘要2Abstract31.Introduction52.Liter

8、aturereview63.Methodology64.Resul