Synthesis and gas sensing properties of biomorphic LaFeO3 hollow fibers templated from cotton

被引：116
作者：
Song, Peng [1 ]
Wang, Qi [1 ]
Zhang, Zhe [2 ]
Yang, Zhongxi [1 ]
机构：
[1] Univ Jinan, Sch Mat Sci & Engn, Jinan 250022, Peoples R China
[2] Guilin Univ Technol, Coll Chem & Bioengn, Guilin 541004, Peoples R China
来源：
SENSORS AND ACTUATORS B-CHEMICAL | 2010年 / 147卷 / 01期
关键词：
Biotemplate; Cotton; LaFeO3 hollow fiber; CO sensing property; THIN-FILMS; METAL-OXIDES; ANNEALING TEMPERATURE; HIGH-SENSITIVITY; GRAIN-SIZE; SENSORS; PEROVSKITE; ROUTE; ZNO; NANOPARTICLES;
D O I：
10.1016/j.snb.2010.03.006
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Biomorphic LaFeO3 hollow fibers with porous walls have been fabricated using cotton as biotemplates. Cotton fibers are infiltrated with lanthanum nitrate and ferric nitrate solution and subsequently sintered in air at high temperatures to produce the final LaFeO3 hollow fibers. The samples have further distinctions in structure, morphology and crystallite size of the nanocrystallites. BET surface area, and the pore size distribution. Growth mechanism of LaFeO3 hollow fibers was proposed. Furthermore, gas sensors were fabricated and an investigation of CO sensing properties has been conducted. Compared with LaFeO3 particles, the hollow fibers display much better CO sensing properties, which is mainly due to the increasing of active surface area and gas diffusion. (c) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：248 / 254
页数：7
相关论文
共 36 条
  • [1] Effect of antimony substitution on structural and electrical properties of LaFeO3
    Berchmans, L. John
    Sindhu, R.
    Angappan, S.
    Augustin, C. O.
    [J]. JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2008, 207 (1-3) : 301 - 306
  • [2] Synthesis of La0.8Sr0.2Co0.5Ni0.5O3-δ thin films for high sensitivity CO sensing material using the Pechini process
    Chai, YL
    Ray, DT
    Chen, GJ
    Chang, YH
    [J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2002, 333 (1-2) : 147 - 153
  • [3] Enhanced CO sensing characteristics of hierarchical and hollow In2O3 microspheres
    Choi, Kwon-Il
    Kim, Hae-Ryong
    Lee, Jong-Heun
    [J]. SENSORS AND ACTUATORS B-CHEMICAL, 2009, 138 (02) : 497 - 503
  • [4] Chu XF, 2000, SENSOR ACTUAT B-CHEM, V65, P64, DOI 10.1016/S0925-4005(99)00430-X
  • [5] Organogelators for making porous sol-gel derived silica at two different length scales
    Clavier, GM
    Pozzo, JL
    Bouas-Laurent, H
    Liere, C
    Roux, C
    Sanchez, C
    [J]. JOURNAL OF MATERIALS CHEMISTRY, 2000, 10 (07) : 1725 - 1730
  • [6] Cullity B.D., 1978, ELEMENTS XRAY DIFFRA, V2nd, P102
  • [7] Hierarchical metal oxides assembled by nanocrystallites via a simple bio-inspired route
    Dong, Qun
    Su, Huilan
    Song, Fang
    Zhang, Di
    Wang, Na
    [J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2007, 90 (02) : 376 - 380
  • [8] Fabrication and gas sensitivity of SnO2 hierarchical films with interwoven tubular conformation by a biotemplate-directed sol-gel technique
    Dong, Qun
    Su, Huilan
    Zhang, Di
    Zhang, Fangying
    [J]. NANOTECHNOLOGY, 2006, 17 (15) : 3968 - 3972
  • [9] Biotemplate-directed assembly of porous SnO2 nanoparticles into tubular hierarchical structures
    Dong, Qun
    Su, Huilan
    Zhang, Di
    Zhu, Na
    Guo, Xinqiu
    [J]. SCRIPTA MATERIALIA, 2006, 55 (09) : 799 - 802
  • [10] Biomorphic mineralization: From biology to materials
    Fan, Tong-Xiang
    Chow, Suk-Kwun
    Di Zhang
    [J]. PROGRESS IN MATERIALS SCIENCE, 2009, 54 (05) : 542 - 659
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