Properties and characterization of SiO2 monolithic aerogels doped with yttrium

Jun Jun Zhang; Ya Zhong; Xiao Dong Shen; Sheng Cui; Yong Kong; Li Li Ji; Bo Ya Li

doi:10.11862/GJIC.2014.136

Properties and characterization of SiO₂ monolithic aerogels doped with yttrium

Jun Jun Zhang, Ya Zhong, Xiao Dong Shen, Sheng Cui, Yong Kong, Li Li Ji, Bo Ya Li

材料科学与工程学院

Nanjing Tech University

科研成果: 期刊稿件 › 文章 › 同行评审

7 引用（Scopus）

摘要

Yttrium doped SiO₂ monolithic aerogels were prepared with YCl₃·6H₂O, TEOS as raw material by sol-gel method and CO₂ supercritical drying technique, and the doping concentrations are in the range of 5wt%~30wt% Y₂O₃. The structures and properties of samples were analyzed by means of SEM (Scanning electron microscope), TEM (Transmission electron microscope), XRD (X-ray diffraction), BET (Brunauer-Emmett-Teller) and XRF (X-ray fluorescence). The results showed that Y₂O₃-SiO₂ aerogels maintained the original space network structures of SiO₂ aerogels. Improvements in thermal stability were obtained by incorporation of yttrium species during the aerogels preparation. When treated by the thermal treatment with 900 °C for 2 h, the 10wt% (0.447 g of YCl₃·6H₂O)Y₂O₃-SiO₂ aerogels still showed an amorphous state and gave a larger surface area of 643.79 m²·g^-1, and the average pore diameter was about 21.3 nm.

源语言	英语
页（从-至）	793-799
页数	7
期刊	Chinese Journal of Inorganic Chemistry
卷	30
期	4
DOI	https://doi.org/10.11862/GJIC.2014.136
出版状态	已出版 - 4月 2014

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title = "Properties and characterization of SiO2 monolithic aerogels doped with yttrium",

abstract = "Yttrium doped SiO2 monolithic aerogels were prepared with YCl3·6H2O, TEOS as raw material by sol-gel method and CO2 supercritical drying technique, and the doping concentrations are in the range of 5wt%~30wt% Y2O3. The structures and properties of samples were analyzed by means of SEM (Scanning electron microscope), TEM (Transmission electron microscope), XRD (X-ray diffraction), BET (Brunauer-Emmett-Teller) and XRF (X-ray fluorescence). The results showed that Y2O3-SiO2 aerogels maintained the original space network structures of SiO2 aerogels. Improvements in thermal stability were obtained by incorporation of yttrium species during the aerogels preparation. When treated by the thermal treatment with 900 °C for 2 h, the 10wt% (0.447 g of YCl3·6H2O)Y2O3-SiO2 aerogels still showed an amorphous state and gave a larger surface area of 643.79 m2·g-1, and the average pore diameter was about 21.3 nm.",

keywords = "Sol-gel, Thermal treatment",

author = "Zhang, {Jun Jun} and Ya Zhong and Shen, {Xiao Dong} and Sheng Cui and Yong Kong and Ji, {Li Li} and Li, {Bo Ya}",

year = "2014",

month = apr,

doi = "10.11862/GJIC.2014.136",

language = "英语",

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pages = "793--799",

journal = "Chinese Journal of Inorganic Chemistry",

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T1 - Properties and characterization of SiO2 monolithic aerogels doped with yttrium

AU - Zhang, Jun Jun

AU - Zhong, Ya

AU - Shen, Xiao Dong

AU - Cui, Sheng

AU - Kong, Yong

AU - Ji, Li Li

AU - Li, Bo Ya

PY - 2014/4

Y1 - 2014/4

N2 - Yttrium doped SiO2 monolithic aerogels were prepared with YCl3·6H2O, TEOS as raw material by sol-gel method and CO2 supercritical drying technique, and the doping concentrations are in the range of 5wt%~30wt% Y2O3. The structures and properties of samples were analyzed by means of SEM (Scanning electron microscope), TEM (Transmission electron microscope), XRD (X-ray diffraction), BET (Brunauer-Emmett-Teller) and XRF (X-ray fluorescence). The results showed that Y2O3-SiO2 aerogels maintained the original space network structures of SiO2 aerogels. Improvements in thermal stability were obtained by incorporation of yttrium species during the aerogels preparation. When treated by the thermal treatment with 900 °C for 2 h, the 10wt% (0.447 g of YCl3·6H2O)Y2O3-SiO2 aerogels still showed an amorphous state and gave a larger surface area of 643.79 m2·g-1, and the average pore diameter was about 21.3 nm.

AB - Yttrium doped SiO2 monolithic aerogels were prepared with YCl3·6H2O, TEOS as raw material by sol-gel method and CO2 supercritical drying technique, and the doping concentrations are in the range of 5wt%~30wt% Y2O3. The structures and properties of samples were analyzed by means of SEM (Scanning electron microscope), TEM (Transmission electron microscope), XRD (X-ray diffraction), BET (Brunauer-Emmett-Teller) and XRF (X-ray fluorescence). The results showed that Y2O3-SiO2 aerogels maintained the original space network structures of SiO2 aerogels. Improvements in thermal stability were obtained by incorporation of yttrium species during the aerogels preparation. When treated by the thermal treatment with 900 °C for 2 h, the 10wt% (0.447 g of YCl3·6H2O)Y2O3-SiO2 aerogels still showed an amorphous state and gave a larger surface area of 643.79 m2·g-1, and the average pore diameter was about 21.3 nm.

KW - Sol-gel

KW - Thermal treatment

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DO - 10.11862/GJIC.2014.136

M3 - 文章

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SN - 1001-4861

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JO - Chinese Journal of Inorganic Chemistry

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Properties and characterization of SiO2 monolithic aerogels doped with yttrium

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Properties and characterization of SiO₂ monolithic aerogels doped with yttrium