Effect of SiO2 addition on the properties of Fe2O3-SiO2 binary composite xerogels

Kun Gao; Yunjun Luo; Guoping Li; Lu Wang; Renjie Chen; Nianke Li

Effect of SiO₂ addition on the properties of Fe₂O₃-SiO₂ binary composite xerogels

Kun Gao, Yunjun Luo^*, Guoping Li, Lu Wang, Renjie Chen, Nianke Li

^*Corresponding author for this work

School of Material Science and Engineering

Beijing Institute of Technology

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

2 Citations (Scopus)

Abstract

The iron oxide-based Fe₂O₃-SiO₂ binary composite xerogels were prepared by sol-gel and freeze-drying method using FeCl₃·6H₂O and TEOS as precursors. The pore structure and specific surface area of the binary xerogels were investigated by means of nitrogen adsorption experiments, FT-IR spectroscopy and SEM. The results show that the specific surface area and the pore volume increase with the silica content, which is caused by Fe-O-Si bonds formed in the binary xerogels. The addition of SiO₂ improves the specific area and pore structure of the binary composite xerogels. These will provide a basis for their application in the nano-thermite.

Original language	English
Pages (from-to)	464-468
Number of pages	5
Journal	Cailiao Yanjiu Xuebao/Chinese Journal of Materials Research
Volume	25
Issue number	5
Publication status	Published - Oct 2011

Keywords

Composite gel
Composites
Pore structure
Sol-gel
Specific surface area

Cite this

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title = "Effect of SiO2 addition on the properties of Fe2O3-SiO2 binary composite xerogels",

abstract = "The iron oxide-based Fe2O3-SiO2 binary composite xerogels were prepared by sol-gel and freeze-drying method using FeCl3·6H2O and TEOS as precursors. The pore structure and specific surface area of the binary xerogels were investigated by means of nitrogen adsorption experiments, FT-IR spectroscopy and SEM. The results show that the specific surface area and the pore volume increase with the silica content, which is caused by Fe-O-Si bonds formed in the binary xerogels. The addition of SiO2 improves the specific area and pore structure of the binary composite xerogels. These will provide a basis for their application in the nano-thermite.",

keywords = "Composite gel, Composites, Pore structure, Sol-gel, Specific surface area",

author = "Kun Gao and Yunjun Luo and Guoping Li and Lu Wang and Renjie Chen and Nianke Li",

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journal = "Cailiao Yanjiu Xuebao/Chinese Journal of Materials Research",

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TY - JOUR

T1 - Effect of SiO2 addition on the properties of Fe2O3-SiO2 binary composite xerogels

AU - Gao, Kun

AU - Luo, Yunjun

AU - Li, Guoping

AU - Wang, Lu

AU - Chen, Renjie

AU - Li, Nianke

PY - 2011/10

Y1 - 2011/10

N2 - The iron oxide-based Fe2O3-SiO2 binary composite xerogels were prepared by sol-gel and freeze-drying method using FeCl3·6H2O and TEOS as precursors. The pore structure and specific surface area of the binary xerogels were investigated by means of nitrogen adsorption experiments, FT-IR spectroscopy and SEM. The results show that the specific surface area and the pore volume increase with the silica content, which is caused by Fe-O-Si bonds formed in the binary xerogels. The addition of SiO2 improves the specific area and pore structure of the binary composite xerogels. These will provide a basis for their application in the nano-thermite.

AB - The iron oxide-based Fe2O3-SiO2 binary composite xerogels were prepared by sol-gel and freeze-drying method using FeCl3·6H2O and TEOS as precursors. The pore structure and specific surface area of the binary xerogels were investigated by means of nitrogen adsorption experiments, FT-IR spectroscopy and SEM. The results show that the specific surface area and the pore volume increase with the silica content, which is caused by Fe-O-Si bonds formed in the binary xerogels. The addition of SiO2 improves the specific area and pore structure of the binary composite xerogels. These will provide a basis for their application in the nano-thermite.

KW - Composite gel

KW - Composites

KW - Pore structure

KW - Sol-gel

KW - Specific surface area

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M3 - Article

AN - SCOPUS:81355139371

SN - 1005-3093

VL - 25

SP - 464

EP - 468

JO - Cailiao Yanjiu Xuebao/Chinese Journal of Materials Research

JF - Cailiao Yanjiu Xuebao/Chinese Journal of Materials Research

IS - 5

ER -

Effect of SiO₂ addition on the properties of Fe₂O₃-SiO₂ binary composite xerogels

Abstract

Keywords

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