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

被引：9

作者：

Tang, Nujiang ^{[1
]}

Zhong, Wei

Gedanken, Aharon

Du, Youwei

机构：

[1] Nanchang Inst Aeronaut Technol, Dept Mat, Nanchang 330043, Peoples R China

[2] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China

[3] Bar Ilan Univ, Ctr Adv Mat & Nanotechnol, Dept Chem, IL-52900 Ramat Gan, Israel

[4] Bar Ilan Univ, Ctr Adv Mat & Nanotechnol, Kanbar Lab Nanomat, IL-52900 Ramat Gan, Israel

来源：

SOLID STATE COMMUNICATIONS | 2007年 / 142卷 / 05期

基金：

中国国家自然科学基金;

关键词：

nanostructures; chemical synthesis; scanning and transmission electron microscopy;

D O I：

10.1016/j.ssc.2007.02.031

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

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. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：265 / 269

页数：5

共 20 条

[1] Synthesis of ethylene-glycol-based magnetic fluid using silica-coated iron particle [J].

Atarashi, T ;

Kim, YS ;

Fujita, T ;

Nakatsuka, K .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 201 :7-10

[2] Morphology of encapsulated iron nanoparticles obtained by co-sputtering and implantation: a GISAXS study [J].

Babonneau, D ;

Naudon, A ;

Cabioc'h, T ;

Lyon, O .

JOURNAL OF APPLIED CRYSTALLOGRAPHY, 2000, 33 (01) :437-441

[3] Morphologies of carbon micro-coils grown by chemical vapor deposition [J].

Chen, XQ ;

Motojima, S .

JOURNAL OF MATERIALS SCIENCE, 1999, 34 (22) :5519-5524

[4] Synthesis of carbon nanotubes over Fe catalyst on aluminium and suggested growth mechanism [J].

Emmenegger, C ;

Bonard, JM ;

Mauron, P ;

Sudan, P ;

Lepora, A ;

Grobety, B ;

Züttel, A ;

Schlapbach, L .

CARBON, 2003, 41 (03) :539-547

[5]

Jiang HY, 2003, CHINESE PHYS LETT, V20, P1855, DOI 10.1088/0256-307X/20/10/357

[6] Characterization of carbon nanohorn encapsulated Fe particles [J].

Li, XK ;

Lei, ZX ;

Ren, RC ;

Liu, J ;

Zuo, XH ;

Dong, ZJ ;

Wang, HZ ;

Wang, HB .

CARBON, 2003, 41 (15) :3068-3072

[7] Highly stable alumina-coated iron nanocomposites synthesized by wet chemistry method [J].

Liu, W ;

Zhong, W ;

Jiang, HY ;

Tang, NJ ;

Wu, XL ;

Du, YW .

SURFACE & COATINGS TECHNOLOGY, 2006, 200 (16-17) :5170-5174

[8] Highly stable carbon-protected cobalt nanoparticles and graphite shells [J].

Lu, AH ;

Li, WC ;

Matoussevitch, N ;

Spliethoff, B ;

Bönnemann, H ;

Schüth, F .

CHEMICAL COMMUNICATIONS, 2005, (01) :98-100

[9]

Murata K, 1998, SEKIYU GAKKAISHI, V41, P168

[10]

Nikitenko SI, 2001, ANGEW CHEM INT EDIT, V40, P4447, DOI 10.1002/1521-3773(20011203)40:23<4447::AID-ANIE4447>3.0.CO

← 1 2 →