Sb-SnO2包覆硅藻土多孔导电材料制备及表征

doi:10.3724/SP.J.1077.2011.01031

无机材料学报 ›› 2011, Vol. 26 ›› Issue (10): 1031-1036.DOI: 10.3724/SP.J.1077.2011.01031

Sb-SnO₂包覆硅藻土多孔导电材料制备及表征

杜玉成¹, 颜晶¹, 孟琪¹, 李扬¹, 戴洪兴²

(北京工业大学1. 新型功能材料教育部重点实验室; 2. 环境与能源学院化学化工系, 北京 100124)

收稿日期:2010-12-03 修回日期:2011-03-09 出版日期:2011-10-20 网络出版日期:2011-09-20

Fabrication and Characterization of Antimony-doped Tin Oxide Coating Diatomite Conductive Material with Microporous Structure

DU Yu-Cheng¹, YAN Jing¹, MENG Qi¹, LI Yang¹, DAI Hong-Xing²

(1. Key Lab of Advanced Functional Materials, Ministry of Education of China, College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China; 2. Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China)

Received:2010-12-03 Revised:2011-03-09 Published:2011-10-20 Online:2011-09-20

摘要/Abstract

摘要： 以硅藻土为基核采用共沉淀法, 制备Sb-SnO₂包覆前驱体, 通过焙烧制备了多孔结构导电复合材料. Sb-SnO₂包覆率影响产物导电性、焙烧温度影响Sb-SnO₂晶胞参数和晶粒大小, 进而影响产物导阻率. 采用XRD、SEM、TEM、EDS、BET、FT-IR对样品进行了表征, 采用四探针仪测试样品导电性能. 当n(Sn)/n(Sb)=8/1、包覆率为25.8%、700℃焙烧样品电阻率最低为22 Ω^.cm, 并具有介孔结构, 孔径为6 nm.

关键词: 硅藻土, 多孔结构, Sb-SnO₂包覆, 导电性, 电阻率

Abstract: Porous and conductive diatomite composite materials were prepared via the calcination of the Sb-SnO₂-coated diatomite precursor derived from the co-precipitation route with diatomite as the substrate. Conductivity of the samples was influenced by the Sb-SnO₂ coating ratio. Calcination temperature had an impact on the crystal lattice parameters and grain sizes, hence altering the conductivity and resistivity of the composite materials. The samples were characterized by means of X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), energy-dispersive X-ray spectrometry (EDS), N₂ adsorption-desorption measurement (BET), and Fourier transform infrared spectrometry (FT-IR). The conductive performance of the samples was determined using a Four-Point Probe Meter apparatus. It is shown that the mesoporous (pore diameter = 6 nm) sample with n(Sn)/n(Sb)=8/1 and a Sb-SnO₂coating ratio of 25.8wt% derived from calcination at 700℃ exhibited the lowest resistivity of 22 Ω·cm.

Key words: diatomite, porous structure, Sb-SnO₂ coating, conductivity, resistivity

中图分类号:

TB34

杜玉成, 颜晶, 孟琪, 李扬, 戴洪兴. Sb-SnO₂包覆硅藻土多孔导电材料制备及表征[J]. 无机材料学报, 2011, 26(10): 1031-1036.

DU Yu-Cheng, YAN Jing, MENG Qi, LI Yang, DAI Hong-Xing. Fabrication and Characterization of Antimony-doped Tin Oxide Coating Diatomite Conductive Material with Microporous Structure[J]. Journal of Inorganic Materials, 2011, 26(10): 1031-1036.

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Sb-SnO₂包覆硅藻土多孔导电材料制备及表征

Fabrication and Characterization of Antimony-doped Tin Oxide Coating Diatomite Conductive Material with Microporous Structure

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