期刊文献+

掺硼纳米TiO_2的制备及光催化性能研究 被引量:3

Preparation of B-Doped TiO_2 Nanoparticles and Their Photocatalytic Activities
下载PDF
导出
摘要 采用改进的Sol-gel方法,制备了单分散椭球形微孔结构的掺B纳米Ti O2光催化剂,并用TG-DTA、XRD、XPS、UV-Vis、TEM、BET等手段进行表征.以难生化降解的染料罗丹明B为目标降解物,采用HPLC检测,通过不同光照时间下染料降解率考察了产物的光催化活性.结果表明,改进的Sol-gel法制得的光催化剂具有明显的孔结构,而且比表面积大、孔径分布窄、粒径小、分散性好;适量B的掺杂能够有效促进Ti O2纳米粒子的光催化活性.最佳催化剂制备条件:B掺杂的摩尔分数为20%、450℃煅烧2 h,此时所制得的B-Ti O2光催化剂活性比纯Ti O2有显著提高. Using acetic acid as catalyzer and chelate,a sort of monodispersed,ellipsoidal and hollow B doped TiO2 nanoparticles is successfully prepared by Sol-gel method,which is based on an improved Sol-gel technique using boric acid triethylester,by controlling the hydrolysis of these precursors with an acetic acid.The TiO2 nanoparticles prepared were characterized by means of TG-DTA、XRD、XPS、UV-Vis、TEM and BET.The photocatalytic activity of the elaborated powders was studied following the degradation of Rhodamine B.The results showed that the photocatalytic activity of B doped TiO2 prepared by Sol-gel method is much higher than that of pure TiO2 particles.The most efficient degradation of Rhodamine B was found with TiO2 particles doped with 20% B in mole fraction and calcined at 450 ℃.Also the reason for the enhancement of the photocatalytic activity of TiO2 by B doping was discussed.
出处 《影像科学与光化学》 CAS CSCD 北大核心 2010年第4期287-295,共9页 Imaging Science and Photochemistry
基金 国家自然科学基金项目(20877022) 河南省基础与前沿技术研究计划项目(092300410105 102300410101) 河南省教育厅自然科学研究计划项目(2008A610007 2009A610008)
关键词 TIO2 掺杂 溶胶-凝胶法 光催化活性 TiO2 Boron doping sol-gel method photocatalytic activity
  • 相关文献

参考文献22

  • 1Khan S U M,Al-Shahry M,Ingler W B.Efficient photochemical water splitting by a chemically modified n-TiO2[J].Jr.Science,2002,297(5590):2243-2245.
  • 2Tachikawa T,Takai Y,Tojo S,et al.Visible light-induced degradation of ethylene glycol on nitrogen-doped TiO2 powders[J].J.Phys.Chem.B,2006,110(26):13158-13165.
  • 3贾进义,刘晶冰,张文熊,常琳,井琪.掺钒二氧化钛中空微球的制备和光催化性能研究[J].无机材料学报,2009,24(4):671-674. 被引量:16
  • 4Livraghi S,Paganini M C,Giamello E,et al.Origin of photoactivity of N doped TiO2 under visible light[J].J.Am.Chem.Soc.,2006,128(37):15666-15671.
  • 5Bacsa R,Kiwi J,Ohno T,et al.Preparation,testing and characterization of doped TiO2 active in the peroxidation of biomolecules under visible light[J].J.Phys.Chem.B,2005,109(12):5994-6003.
  • 6Li D,Ohashi N,Hishita S,et al.Origin of visible-light-driven photocatalysis:a comparative study on N/F-doped and N-F-codoped TiO2 powders by means of experimental characterizations and theoretical calculations[J].J.Solid State Chem.,2005,178(11):3293-3302.
  • 7Sakthivel S,Kisch H.Daylight photocatalysis by carbon-modified titanium dioxide[J].Angew.Chem.Int.Ed.,2003,42(40):4908-4911.
  • 8Zaleska A,Sobczak J W,Grabowska E,et al.Preparation and photocatalytic activity of boron-modified TiO2 under UV and visible light[J].Applied Catalysis B:Environmental,2008,78(1-2):92-100.
  • 9龙绘锦,孟庆巨,元晶,杨文胜,曹亚安.B离子掺杂TiO2催化剂(TiO(2-x)Bx)光催化活性的研究[J].化学学报,2008,66(6):657-661. 被引量:20
  • 10Bettinelli M,Dallacasa V,Falcomer D,et al.Photocatalytic activity of TiO2 doped with boron and vanadium[J].Journal of Hazardous Materials,2007,146(3):529-534.

二级参考文献90

共引文献98

同被引文献23

引证文献3

二级引证文献6

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部