A study of the stability of pyrolytic carbon-coated Fe/SiO2 composites in HNO3 and the effect of pyrolysis temperatures on their magnetic properties

Nujiang Tang; Wei Zhong; Aharon Gedanken; Youwei Du

doi:10.1016/j.ssc.2007.02.031

A study of the stability of pyrolytic carbon-coated Fe/SiO₂ composites in HNO₃ and the effect of pyrolysis temperatures on their magnetic properties

Nujiang Tang, Wei Zhong, Aharon Gedanken, Youwei Du

Department of Chemistry

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

7 Scopus citations

Abstract

Fe/SiO₂ composites prepared by a sol-gel combined hydrogen reduction method were coated with carbon by the pyrolysis of acetylene. Scanning electron microscopy (SEM) showed that the as-prepared sample consists of only carbon-coated Fe/SiO₂ particles without the presence of one-dimensional carbon or any other unwanted carbon formation. The stability of the Fe/SiO₂ composites under a HNO₃ solution at room temperature was greatly enhanced after they were coated with carbon. The effect of pyrolysis temperatures was also studied.

Original language	English
Pages (from-to)	265-269
Number of pages	5
Journal	Solid State Communications
Volume	142
Issue number	5
DOIs	https://doi.org/10.1016/j.ssc.2007.02.031
State	Published - May 2007

Bibliographical note

Funding Information:
This work was financially supported by the National Natural Science Foundation (Grant No. 50602023) and the National Major Project of Fundamental Research: Nanomaterials and Nanostructures (Grant No. 2005CB623605), PR China.

Funding

This work was financially supported by the National Natural Science Foundation (Grant No. 50602023) and the National Major Project of Fundamental Research: Nanomaterials and Nanostructures (Grant No. 2005CB623605), PR China.

Funders	Funder number
National Natural Science Foundation of China	2005CB623605, 50602023

Keywords

A. Nanostructures
B. Chemical synthesis
C. Scanning and transmission electron microscopy

Access to Document

10.1016/j.ssc.2007.02.031

Cite this

@article{18c38619fdf149528c851484e56bb384,

title = "A study of the stability of pyrolytic carbon-coated Fe/SiO2 composites in HNO3 and the effect of pyrolysis temperatures on their magnetic properties",

abstract = "Fe/SiO2 composites prepared by a sol-gel combined hydrogen reduction method were coated with carbon by the pyrolysis of acetylene. Scanning electron microscopy (SEM) showed that the as-prepared sample consists of only carbon-coated Fe/SiO2 particles without the presence of one-dimensional carbon or any other unwanted carbon formation. The stability of the Fe/SiO2 composites under a HNO3 solution at room temperature was greatly enhanced after they were coated with carbon. The effect of pyrolysis temperatures was also studied.",

keywords = "A. Nanostructures, B. Chemical synthesis, C. Scanning and transmission electron microscopy",

author = "Nujiang Tang and Wei Zhong and Aharon Gedanken and Youwei Du",

note = "Funding Information: This work was financially supported by the National Natural Science Foundation (Grant No. 50602023) and the National Major Project of Fundamental Research: Nanomaterials and Nanostructures (Grant No. 2005CB623605), PR China.",

year = "2007",

month = may,

doi = "10.1016/j.ssc.2007.02.031",

language = "אנגלית",

volume = "142",

pages = "265--269",

journal = "Solid State Communications",

issn = "0038-1098",

publisher = "Elsevier Ltd.",

number = "5",

}

TY - JOUR

T1 - A study of the stability of pyrolytic carbon-coated Fe/SiO2 composites in HNO3 and the effect of pyrolysis temperatures on their magnetic properties

AU - Tang, Nujiang

AU - Zhong, Wei

AU - Gedanken, Aharon

AU - Du, Youwei

N1 - Funding Information: This work was financially supported by the National Natural Science Foundation (Grant No. 50602023) and the National Major Project of Fundamental Research: Nanomaterials and Nanostructures (Grant No. 2005CB623605), PR China.

PY - 2007/5

Y1 - 2007/5

N2 - Fe/SiO2 composites prepared by a sol-gel combined hydrogen reduction method were coated with carbon by the pyrolysis of acetylene. Scanning electron microscopy (SEM) showed that the as-prepared sample consists of only carbon-coated Fe/SiO2 particles without the presence of one-dimensional carbon or any other unwanted carbon formation. The stability of the Fe/SiO2 composites under a HNO3 solution at room temperature was greatly enhanced after they were coated with carbon. The effect of pyrolysis temperatures was also studied.

AB - Fe/SiO2 composites prepared by a sol-gel combined hydrogen reduction method were coated with carbon by the pyrolysis of acetylene. Scanning electron microscopy (SEM) showed that the as-prepared sample consists of only carbon-coated Fe/SiO2 particles without the presence of one-dimensional carbon or any other unwanted carbon formation. The stability of the Fe/SiO2 composites under a HNO3 solution at room temperature was greatly enhanced after they were coated with carbon. The effect of pyrolysis temperatures was also studied.

KW - A. Nanostructures

KW - B. Chemical synthesis

KW - C. Scanning and transmission electron microscopy

UR - http://www.scopus.com/inward/record.url?scp=33947600098&partnerID=8YFLogxK

U2 - 10.1016/j.ssc.2007.02.031

DO - 10.1016/j.ssc.2007.02.031

M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???

AN - SCOPUS:33947600098

SN - 0038-1098

VL - 142

SP - 265

EP - 269

JO - Solid State Communications

JF - Solid State Communications

IS - 5

ER -