期刊文献+

模板法合成三维菊花状TiO_2纳米花及其性能 被引量:2

Template synthesis and the properties of three-dimensional chrysanthemum-like TiO_2 nanoflowers
下载PDF
导出
摘要 为了解决一维、二维纳米材料在降解有机污染物时,易发生团聚、催化活性低、难以回收利用等问题,以TiO2(P25)和NaOH为原料,ZnO为模板,采用水热法合成了三维菊花状TiO2纳米花.运用扫描电子显微镜、X射线衍射仪、氮气吸附脱附、紫外-可见漫反射、傅立叶红外等手段对合成的样品进行测试分析.结果表明:其花瓣是由TiO2纳米颗粒通过自组装定向排列而成的链状结构,构成纳米花的粒子晶粒尺寸约15 nm,花状结构尺寸约为5μm,结晶性良好,为锐钛矿相;比表面积为102.3 m2/g,平均孔径为17.41 nm;以亚甲基蓝为目标污染物,在紫外光照射下对其进行光催化性能实验,80 min亚甲基蓝的降解率为98%,催化活性高于P25,显示出较强的光催化活性. To solve the problem of agglomeration, low catalytic activity and difficulty to recycle and utilize of the l-D, 2-D nanomaterials during the process of degradating organic pollutants.3-D TiO2 nanoflowers with chrysanthemum structure were prepared by template hydrothermal method in which TiO2( P25 )and NaOH as raw materials, with assistance of ZnO nanostructure templates. Petals in nanoflowers were self-assembled and arranged directionally by TiO2 nanoparticles. The TiO2 nanoilowers was characterized by scanning electron microscopy ( SEM ), X-ray diffraction ( XRD ), nitrogen adsorption-desorption, ultraviolet-visibles diffuse reflectance sepctroscopy (UV-vis DRS) , Fourier transform infrared (FTIR). The SEM images indicated that TiO2 nanoflowers were chrysanthemum shape and average particle size was 5 μm. Self-assembled nanoflower of the diameter of the nanoparticles was about 15 nm. It was confirmed by XRD that the TiO2 nanoflowers was pure anatase crystalline structure with good crystallinity. The N2 adsorption-stripping isotherm results showed that specific surface area was 102.3 mE/g and average pore size is about 17.41 rim. Methylene blue as the target pollutant, the photocatalytic degradation of methylene blue rate in 80 minutes could reach 98% under UV irradiation. So photocatalytic activity of TiO2 nanoflowers was higher than P25, and showing stronger photocatalytic degradation ability.
出处 《哈尔滨工业大学学报》 EI CAS CSCD 北大核心 2014年第2期55-60,共6页 Journal of Harbin Institute of Technology
基金 国家自然科学基金资助项目(51178138 2127305)
关键词 TIO2 纳米花 水热 模板法 自组装 TiO2 nanoflowers hydrothermal template self-assembled
  • 相关文献

参考文献25

  • 1KUMAR A, MADARIA A R, ZHOU Chongwu. Growth of aligned single-crystalline rutile TiO2 nanowires on arbitrary substrates and their application in dye- sensitized solar cells [ J]. Phys Chem C, 2010, t14 (17) : 7787-7792.
  • 2CHEN J S, TAN Y, LI C M, et al. Constructinghierarchical spheres from large uhrathin anatase TiO2 nanosheets with nearly 100% exposed i 001 ) facets for fast reversible lithium storage[ J]. Am Chem Soc, 2010, 132(17) : 6124-6130.
  • 3XU Feng, DAI Min, LU Yinong, et al. Hierarchical ZnO nanowire-nanosheet architectures for high power conversion efficiency in dye-sensitized solar cells [ J ]. Phys Chem C, 2010, 114(6) : 2776-2782.
  • 4PARK K, ZHANG Q, GARCIA B B, et al. Effect of an ultrathin TiO (2) layer coated on submicrometer-sized ZnO nanocrystallite aggregates by atomic layer deposition on the performance of dye-sensitized solar cells [ J ]. Adv Mater, 2010, 22(21): 2329-2332.
  • 5KUANG Daibin, BRILLET J, CHEN P, et al. Application of highly ordered TiO2 nanotube arrays in flexible dye-sensitized solar cells[ J]. ACS Nano, 2008, 2(6): 1113-1116.
  • 6SAUVAGE F, CHEN D H, COMET P, et al. Dye- sensitized solar cells employing a single film of mesoporous TiO2 beads achieve power conversion efficiencies over 10% [ J ]. ACS Nano, 2010, 4 (8) : 4420-4425.
  • 7OH J K, LEE J K, KIM H S, et al. TiO2 branched nanostructure electrodes synthesized by seeding method for dye-sensitized solar cells[ J]. Chem Mater, 2010, 22 (3) : 1114-1118.
  • 8CHEN Junsong, LIU Jian, QIAO Shizhang, et al. Formation of large 2D nanosheets via PVP-assisted assembly of anatase TiO2 nanomosaies [ J ]. Chem Commun, 2011, 47: 10443-10445.
  • 9CHEN Dehong, HUANG Fuzhi, CHENG Yibing, et al. Mesoporous anatase TiO2 beads with high surface areas and controllable pore sizes: a superior candidate for high-performance dye-sensitized solar ceils [ J ]. Adv Mater, 2009, 21(21): 2206-2210.
  • 10YANG Huagui, LIU Gang, QIAO Shizhang, et al. Solvothermal synthesis and photoreactivity of anatase TiO (2) nanosheets with dominant { 001 } facets [ J ]. Am.Chem Soc, 2009,13( 11): 4078-4083.

同被引文献13

  • 1Linsebigler A L,Guangquan Lu,Yates J T,Jr. Photocatalysis on TiO 2 Surface:Principles,Mechanisms,and Selected Results[J]. Chem Rev,1995,95(3):735 - 758.
  • 2Rani S,Roy S C,Paulose M,et al. Synthesis and Applications of Electrochemically Self-Assembled Titania Nanotube Arrays[J]. Phys Chem Phys,2010,12(12):2780 - 2800.
  • 3Varghese O K,Gong D,Paulose M,et al. Hydrogen Sensing Using Titania Nanotubes[J]. Sens Actuators,B,2003,93(1/2/3):338 - 344.
  • 4Kuang D,Brillet J,Chen P,et al. Application of Highly Ordered TiO 2 Nanotube Arrays in Flexible Dye-Sensitized Solar Cells[J]. ACS Nano,2008,2(6):1113 - 1116.
  • 5李伟. 二氧化钛中空微球的制备及生物活性研究[D]. 杭州:浙江工业大学机械工程学院,2012.
  • 6Jiang Jinghui,Zhou Han,Ding Jian,et al. Constructing Inverse V-Type TiO 2 -Based Photocatalyst via Bio-Templateapproach to Enhance the Photosynthetic Water Oxidation[J]. Appl Surf Sci,2015, 347(30):368 - 377.
  • 7Wang Ran,Cai Xia,Shen Fenglei. Preparation of TiO 2 Hollow Microspheres by a Novel Vesicle Template Method and Their Enhanced Photocatalytic Properties[J]. Talanta, 2015, 144(1):6 - 12.
  • 8Feng Zhenliang,Wei Wenrui,Wang Litong,et al. Hollow Mesoporous Titania Microspheres:New Technology and Enhanced Photocatalytic Activity[J]. Appl Surf Sci,2015,357,759 - 765.
  • 9Lai Lulu,Wu Jinming. Hollow TiO 2 Microspheres Assembled with Rutile Mesocrystals:Low-Temperature One-Pot Synthesis and the Photocatalytic Performance[J]. Ceram Int,2015,41(9),12317 - 12322.
  • 10余家国,余火根,刘升卫,赵秀峰.无机空心微球的化学诱导自转变制备及其在光催化中的应用[J].中国陶瓷工业,2009,16(1):55-56. 被引量:2

引证文献2

二级引证文献7

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