Preparation and photocatalytic properties of the Cr-doped nano-TiO2 emulsion

doi:10.3969/j.issn.1000-1565.2016.04.004

Abstract

Abstract: Cr-doped nano-TiO₂ colorless and transparent hydrosol was synthesized by a complexation controlled hydrolysis method at room temperature using TiCl₄,Cr(NO₃)₃·6H₂O,D-sorbitol and organic carboxylic acid as raw materials.The phase structure,composition,particle size,absorbance spectrum,and photo-catalysis of samples were characterized by XRD,nano laser particle size analyzer,and ultraviolet-visible spectrophotometer.The results indicated that the Cr-doped nano-TiO₂ transparent photocatalyst exhibits optimal photocatalytic performance when the doping content of the amount of ratio substance was 0.5% and the refluxing time was 15 min.The degradation efficiency of acid red 3R dye solution with a concentration- DOI:10.3969/j.issn.1000-1565.2016.04.004铬掺杂纳米二氧化钛乳液的制备及其光催化性能肖俊莹¹,许军²,武承杰³,眭慧东¹,丁文革¹(1.河北大学物理科学与技术学院,河北保定 071002;2.惠州商贸旅游高级职业技术学校机电工程系,广东惠州 056025;3.河北大学电子信息工程学院, 河北保定 071002)摘要:以四氯化钛(TiCl₄)、硝酸铬(Cr(NO₃)₃·6H₂O)、D-山梨糖醇、有机羧酸等为主要原材料,采用新技术——络合-控制水解法,在室温下合成铬(Cr)掺杂纳米TiO₂无色透明乳液.分别用XRD、纳米激光粒度分析仪、和紫外-可见分光光度仪等,对样品的物相、粒径、组成、光吸收、光催化等性质进行了表征.结果显示,当Cr的掺杂物质的量比为0.5%,回流时间为15 min,pH为6时,所得样品Cr掺杂纳米TiO₂无色透明乳液的光催化性能最好;在光照50 min后,其对酸性红3R的降解率最大达96%.关键词:纳米TiO₂无色透明乳液;铬掺杂;络合控制水解法;光催化中图分类号:TQ613.5 文献标志码:A 【additional_page=368】文章编号:1000-1565(2016)04-0353-05Preparation and photocatalytic properties of the Cr-doped nano-TiO₂ emulsionXIAO Junying¹,XU Jun²,WU Chengjie³,SUI Huidong¹,DING Wenge¹(1.College of Physics Science and Technology,Hebei University,Baoding 071002,China;2.Department of Electrical and Mechanical Engineering Huizhou College of Business,Huizhou 056025,China;3. Electronic Information Engineering College, Hebei University, Baoding 071002,China)Abstract:Cr-doped nano-TiO₂ colorless and transparent hydrosol was synthesized by a complexation controlled hydrolysis method at room temperature using TiCl₄,Cr(NO₃)₃·6H₂O,D-sorbitol and organic carboxylic acid as raw materials.The phase structure,composition,particle size,absorbance spectrum,and photo-catalysis of samples were characterized by XRD,nano laser particle size analyzer,and ultraviolet-visible spectrophotometer.The results indicated that the Cr-doped nano-TiO₂ transparent photocatalyst exhibits optimal photocatalytic performance when the doping content of the amount of ratio substance was 0.5% and the refluxing time was 15 min.The degradation efficiency of acid red 3R dye solution with a concentration- 收稿日期:2015-11-04 基金项目:国家自然科学基金资助项目(21201053);高等学校博士学科点专项科研基金新教师类资助课题(20121301120005);河北省自然科学基金资助项目(F2014201078;A2015201050);河北省应用基础研究计划重点基础研究项目(14964306D);河北省教育厅基金资助项目(QN2014057;ZD2016055);河北省大学生创新创业训练计划项目(2015066;2015161;201510075047,026);河北大学学生综合素质培养项目(2015zh0442;2015zh0443);河北省研究生创新资助项目(S2016023);河北大学研究生创新资助项目(X2016065;X2016066);河北大学杰出青年基金资助项目(2015JQ02) 第一作者:肖俊莹(1990—),男,河北省承德人,满族,河北大学在读硕士研究生,主要从事新型纳米材料及光电器件的研究.E-mail:xiaojunyinghbu@163.com 通信作者:丁文革(1966—),女,河北枣强人,河北大学教授,主要从事新型纳米材料及光电器件研究.E-mail:dingwghbu@163.com第4期肖俊莹等:铬掺杂纳米二氧化钛乳液的制备及其光催化性能of 1 000 mg/L has reached more than 96% after exposed to sunlight for 50 min.

Key words: nano-TiO₂ colorless transparent hydrosol, Cr-doped, complexation-controlled hydrolysis method, photocatalysis

CLC Number:

TQ613.5

XIAO Junying,XU Jun,WU Chengjie,SUI Huidong,DING Wenge. Preparation and photocatalytic properties of the Cr-doped nano-TiO₂ emulsion[J]. Journal of Hebei University (Natural Science Edition), 2016, 36(4): 353-357.

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Preparation and photocatalytic properties of the Cr-doped nano-TiO₂ emulsion

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