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研究论文

电化学法制备高热稳定性锐钛矿型纳米TiO_2

  • 褚道葆
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  • 安徽师范大学有机化学研究所!芜湖241000,安徽师范大学有机化学研究所!芜湖241000,厦门大学材料科学系!化学系,固体表面物理化学国家重点实验室厦门361005,厦门大学材料科学系!化学系,固体表面物理化学国家重点实验室厦门361005

收稿日期: 1999-11-28

  修回日期: 1999-11-28

  网络出版日期: 1999-11-28

Prparation of Nanocrystaline TiO_2(Anatase)with High Thermal and Textural Sability by Electrochemical Method

  • Chu DaoBao Zhou Xingfu
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  • (Inst.of Org.Chem.,Anhui Normal Univ.,Wuhu 241000) Lin Changjian Tang Jianguang (Dept.Mat.Sci.,Dept.Chem.,State Key Lab.for Phy.Chem.of Solid Surf., Xiamen Univ.,Xiamen 361005

Received date: 1999-11-28

  Revised date: 1999-11-28

  Online published: 1999-11-28

摘要

以醇中加入少量有机胺导电盐作为电解液,以工业纯钛作“牺牲”阳极,控电流电解,可分别得到乙醇钛、异丙醇钛、正丁醇钛等的相应醇溶液.然后直接水解,经溶胶_凝胶(Sol_gel) 过程,形成凝胶前体,在450 ℃,720 ℃煅烧30 min 后,均得到高热稳定锐钛矿型(anatase) 纳米TiO2(10 nm 左右).通过FTIR,XRD,TEM 等测试手段,对钛醇盐和纳米TiO2 进行了表征.本文同时讨论了不同钛醇盐制备纳米TiO2 的优缺点,发现钛酸乙酯制备的纳米TiO2 具有更好的晶型结构和热稳定性

本文引用格式

褚道葆 . 电化学法制备高热稳定性锐钛矿型纳米TiO_2[J]. 电化学, 1999 , 5(4) : 443 -447 . DOI: 10.61558/2993-074X.3203

Abstract

Titanium alkoxides were prepared by anodic dissolution of metallic titanium in absolute ethanol in the presence of HN(C 2H 5) 2·HCl (electro_conductive additives).The solution was directly hydrolyzed to prepare nanocrystalline of TiO 2 (about 10nm)by a sol_gel process.The precursor gels was calcined at T =450 ℃ and 720 ℃for 30 min,and nanocrystalline of TiO 2 (anatase) with high textural and thermal stability was obtained.FTIR,XRD,TEM,were used to characterize the structure of titanium alkoxides and nanocrystalline of TiO 2.The characteristics of nanocrystalline of TiO 2 was depended on the properties of titanium alkoxides.The Ti(OEt) 4 as a source of titanium yielded the best textural and thermal stability nanocrystalline of TiO 2.

参考文献

1 赵文宽,方佑龄等.高热稳定性锐钛矿型TiO2 纳米粉体的制备.无机材料学报,1998,13(4) :608 ~612 2 Kavan L,O’Regan B,Kay A,Gratzel M.Preparation of TiO2(anatase) folmson electrodes byanodic oxidative hydrolysis of TiCl3 .J.Electroanal.Chem .1993,346:291~307 3  BanaitJS,PahilPK.Electrochemicalreactionsofsome polyhydricalcoholsatacopperanode.Synth .React.Inorg.Met.Org,Chem .,1986 ,16 :1217 4 Bradley DC,Mehrotra RC,Gaut DP.Metalalkoxides.New York :Academic Press,1978 5 LivageJSanehez C.Sol~gelchemistry .J.of Now Crystalline Solids,1992 ,145 :11~19 6  Turova N Ya,Turevskaya EP.Physicochemical approach to the studies of metal alkoxides.Polyhedron 1998 ,17(5 ~6) :899 ~915 7 Doeuff S,Henry M,Hydrolysisoftitanium alkoxides.Journalof Non_Crystalline Solids 1987 ,89:206 ~216
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