Preparation and structural characterization of SiO2-ZrO 2 aerogels

He Xiaodong; Zhang Hexin; Li Yao; Hong Changing; Zhao Jiupeng

Preparation and structural characterization of SiO₂-ZrO ₂ aerogels

He Xiaodong^*
, Zhang Hexin
, Li Yao
, Hong Changing
, Zhao Jiupeng

^*Corresponding author for this work

Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

Low density SiO₂-xZrO₂ aerogels with x=35wt%, 65wt%, 75wt%, 90wt%, 95wt% were prepared by CO₂ supercritical drying technique with tetraethylorthosilicate (TEOS) and zirconyl nitrate dihydrate (ZrO(NO₃)₂ 2H₂O) by hydrolytic polycondensation under different chemical conditions. The prepared aerogels are performed by X-ray Diffraction (XRD), Transmission electron microscopy (TEM). Fourier transformed infrared spectroscopy (FT-IR) and BET surface areas to characterize and analyze the morphology and pore structure of SiO₂-ZrO₂ aerogels, The results showed that the SiO₂-ZrO₂ areogels are the typical of nano mesopores and the average pore size is about 50 nm. The specific surface areas varied from 345.5 to 615.5 m²/g with (S _BET)_MAX= 615.5 m²/g with 20wt% Zirconia; Moreover a mass of Si-O-Zr bands formed in the aerogels and the formation mechanism of Si-O-Zr bands are also discussed.

Original language	English
Pages (from-to)	2282-2285
Number of pages	4
Journal	Key Engineering Materials
Volume	336-338 III
State	Published - 2007

Keywords

Nano-porous
SiO-ZrO aerogels
Sol-gel
Structural characterization

Cite this

@article{1b3d6be45d1f4d78ba8d3048ae7bccc1,

title = "Preparation and structural characterization of SiO2-ZrO 2 aerogels",

abstract = "Low density SiO2-xZrO2 aerogels with x=35wt\%, 65wt\%, 75wt\%, 90wt\%, 95wt\% were prepared by CO2 supercritical drying technique with tetraethylorthosilicate (TEOS) and zirconyl nitrate dihydrate (ZrO(NO3)2 2H2O) by hydrolytic polycondensation under different chemical conditions. The prepared aerogels are performed by X-ray Diffraction (XRD), Transmission electron microscopy (TEM). Fourier transformed infrared spectroscopy (FT-IR) and BET surface areas to characterize and analyze the morphology and pore structure of SiO2-ZrO2 aerogels, The results showed that the SiO2-ZrO2 areogels are the typical of nano mesopores and the average pore size is about 50 nm. The specific surface areas varied from 345.5 to 615.5 m2/g with (S BET)MAX= 615.5 m2/g with 20wt\% Zirconia; Moreover a mass of Si-O-Zr bands formed in the aerogels and the formation mechanism of Si-O-Zr bands are also discussed.",

keywords = "Nano-porous, SiO-ZrO aerogels, Sol-gel, Structural characterization",

author = "He Xiaodong and Zhang Hexin and Li Yao and Hong Changing and Zhao Jiupeng",

year = "2007",

language = "英语",

volume = "336-338 III",

pages = "2282--2285",

journal = "Key Engineering Materials",

issn = "1013-9826",

publisher = "Trans Tech Publications Ltd",

}

TY - JOUR

T1 - Preparation and structural characterization of SiO2-ZrO 2 aerogels

AU - Xiaodong, He

AU - Hexin, Zhang

AU - Yao, Li

AU - Changing, Hong

AU - Jiupeng, Zhao

PY - 2007

Y1 - 2007

N2 - Low density SiO2-xZrO2 aerogels with x=35wt%, 65wt%, 75wt%, 90wt%, 95wt% were prepared by CO2 supercritical drying technique with tetraethylorthosilicate (TEOS) and zirconyl nitrate dihydrate (ZrO(NO3)2 2H2O) by hydrolytic polycondensation under different chemical conditions. The prepared aerogels are performed by X-ray Diffraction (XRD), Transmission electron microscopy (TEM). Fourier transformed infrared spectroscopy (FT-IR) and BET surface areas to characterize and analyze the morphology and pore structure of SiO2-ZrO2 aerogels, The results showed that the SiO2-ZrO2 areogels are the typical of nano mesopores and the average pore size is about 50 nm. The specific surface areas varied from 345.5 to 615.5 m2/g with (S BET)MAX= 615.5 m2/g with 20wt% Zirconia; Moreover a mass of Si-O-Zr bands formed in the aerogels and the formation mechanism of Si-O-Zr bands are also discussed.

AB - Low density SiO2-xZrO2 aerogels with x=35wt%, 65wt%, 75wt%, 90wt%, 95wt% were prepared by CO2 supercritical drying technique with tetraethylorthosilicate (TEOS) and zirconyl nitrate dihydrate (ZrO(NO3)2 2H2O) by hydrolytic polycondensation under different chemical conditions. The prepared aerogels are performed by X-ray Diffraction (XRD), Transmission electron microscopy (TEM). Fourier transformed infrared spectroscopy (FT-IR) and BET surface areas to characterize and analyze the morphology and pore structure of SiO2-ZrO2 aerogels, The results showed that the SiO2-ZrO2 areogels are the typical of nano mesopores and the average pore size is about 50 nm. The specific surface areas varied from 345.5 to 615.5 m2/g with (S BET)MAX= 615.5 m2/g with 20wt% Zirconia; Moreover a mass of Si-O-Zr bands formed in the aerogels and the formation mechanism of Si-O-Zr bands are also discussed.

KW - Nano-porous

KW - SiO-ZrO aerogels

KW - Sol-gel

KW - Structural characterization

UR - https://www.scopus.com/pages/publications/33947263624

M3 - 文章

AN - SCOPUS:33947263624

SN - 1013-9826

VL - 336-338 III

SP - 2282

EP - 2285

JO - Key Engineering Materials

JF - Key Engineering Materials

ER -

Preparation and structural characterization of SiO₂-ZrO ₂ aerogels

Abstract

Keywords

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