|
OALib Journal期刊
ISSN: 2333-9721
费用：99美元
|
|
|
|
la掺杂对tio2薄膜性能的影响
Keywords: 无机非金属材料,溶胶--凝胶法,tio2薄膜,la掺杂,接触角
Abstract:
？用溶胶--凝胶法制备tio2以及la掺杂tio2的前驱体凝胶,将其均匀旋涂不同层数制备出不同厚度的薄膜,研究了la掺杂对tio2薄膜结晶性能、表面形貌、光学特性和亲水性能的影响.结果表明:在500℃可以获得结晶性良好的锐钛矿相tio2薄膜;随着la掺杂量的增加,薄膜中tio2晶粒会变大,同时引起紫外可见光谱中吸收边的蓝移.掺la的tio2薄膜经紫外照射后其接触角明显高于未掺杂样品,主要原因是到达表面的活性载流子相对减少.一方面,大的tio2晶粒使得光生载流子到达光催化表面的路程变长,电子--空穴对的复合几率也随之变大;另一方面,未完全替代ti的la可能成为光生电子--空穴对的复合中心.因此,通过la的掺杂可以有效调节tio2晶粒尺寸和光致接触角.
| [1] | 7w.choi,a.termin,r.hoffmann,theroleofmetaliondopantsinquantum–sizedtio2:correlationbetweenphotoreactivityandchargecarrierrecombinationdynamics,j.phys.chem.,98(51),13669(1994)
|
| [2] | 8t.umebayashi,t.yamaki,h.ttoh,k.asai,bandgapnarrowingoftitaniumdioxidebysulfurdoping,appl.phys.lett.,81(3),454(2002)
|
| [3] | 9r.asahi,t.morikawa,t.ohwaki,k.aoki,y.taga,visible–lightphotocatalysisinnitrogen–dopedtitaniumoxides,science,293(5528),269(2001)
|
| [4] | 10m.machida,k.norimoto,t.watanabe,theeffectofsio2additioninsuperhydrophilicpropertyoftio2photocatalyst,j.mater.sci.,34(11),2569(1999)
|
| [5] | 11x.j.fen,l.jiang,designandcreationofsuperwetting/antiwettingsurfaces,adv.mater.,18(23),3063(2006)
|
| [6] | 13k.t.ranjite,i.willner,s.h.bossmann,a.m.braun,lanthanideoxidedopedtitaniumdioxidephotocatalysts:effectivephotocatalystsfortheenhanceddegradationofsalicylicacidandt–cinnamicacid,j.catal.,204(2),305(2001)
|
| [7] | 1r.wang,k.hashimoto,a.fujishima,lightinducedamphiphilicsurfaces,nature,388(31),431(1997)
|
| [8] | 2r.wang,k.hashimoto,a.fujishima,photogenerationofhighlyamphiphilicsurfaces,advancedmaterials,10(2),135(1998)
|
| [9] | 3t.ohno,s.tagawa,h.itoh,h.suzuki,t.matsuda,sizeeffectoftio2–sio2nano–hybridparticle,materialschemistryandphysics,113(1),119(2009)
|
| [10] | 4n.arconada,a.duran,s.suarez,r.portela,j.m.coronado,b.sanchez,y.castro,synthesisandphotocatalyticpropertiesofdenseandporoustio2–anatasethinfilmspreparedbysol~gel,appliedcatalysisb:environmental,86(1–2),1(2009)
|
| [11] | 5houyaqi,zhuangdaming,zhanggong,suntaolei,jianglei,wuminsheng,photo–inducedhydrophilicityandanti–foggingeffectoftitaniumoxidecompositefilms,vacuumscienceandtechnology,24(5),329(2004)
|
| [12] | (侯亚奇,庄大明,张弓,孙涛磊,江雷,吴敏生,tio2复合薄膜光生亲水及防结雾性能研究,真空科学与技术学报,24(5),329(2004))
|
| [13] | 6k.l.lv,h.s.zuo,j.sun,k.j.deng,s.c.liu,x.f.li,d.y.wang,(bi,candn)codopedtio2nanoparticles,journalofhazardousmaterials,161(1),396(2009)
|
| [14] | 12j.g.yu,x.j.zhao,j.c.yu,grainsizeandwettabilityoftio2/sio2photocatalyticcompositethinfilms,raremetals,20(2),81(2001)
|
| [15] | 14d.g.syarif,a.miyashita,t.yamaki,t.sumita,y.choi,h.itoh,preparationofanataseandrutilethinfilmsbycontrollingoxygenpartialpressure,appl.surf.sci.,193(1–4),287(2002)
|
| [16] | 15l.sirghi,y.hatanaka,hydrophilicityofamorphoustio2ultrathinfilms,surfacescience,530(3),323(2003)
|
Full-Text
|
|
Contact Us
service@oalib.com QQ:3279437679 
WhatsApp +8615387084133
|
|
