Structure and superparamagnetic behaviour of magnetite nanoparticles in cellulose beads

被引：21

作者：

Correa, Jose R. ^{[1
]}

Bordallo, Eduardo ^{[2
]}

Canetti, Dora ^{[3
]}

Leon, Vivian ^{[2
]}

Otero-Diaz, Luis C. ^{[4
,6
]}

Negro, Carlos ^{[5
]}

Gomez, Adrian ^{[6
]}

Saez-Puche, Regino ^{[4
]}

机构：

[1] Univ Havana, Fac Chem, Dept Gen Chem, Havana 10400, Cuba

[2] Sugar Cane Cellulose Res Ctr, Quivican, Cuba

[3] Univ Havana, Fac Chem, Dept Inorgan Chem, Havana 10400, Cuba

[4] Univ Complutense Madrid, Dept Inorgan Chem 1, E-28040 Madrid, Spain

[5] Univ Complutense Madrid, Dept Chem Engn, E-28040 Madrid, Spain

[6] Univ Complutense Madrid, Ctr Electron Microscopy, E-28040 Madrid, Spain

来源：

MATERIALS RESEARCH BULLETIN | 2010年 / 45卷 / 08期

关键词：

Composites; Magnetic materials; Chemical synthesis; Electron microscopy; Magnetic properties; IRON-OXIDE NANOPARTICLES; X-RAY; COPRECIPITATION; PARTICLES; HYDROXIDE; MECHANISM; MAGHEMITE; FIBERS; MEDIA;

D O I：

10.1016/j.materresbull.2010.04.012

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Superparamagnetic magnetite nanoparticles were obtained starting from a mixture of iron(II) and iron(III) solutions in a preset total iron concentration from 0.04 to 0.8 mol l(-1) with ammonia at 25 and 70 C. The regeneration of cellulose from viscose produces micrometrical spherical cellulose beads in which synthetic magnetite were embedded. The characterization of cellulose-magnetite beads by X-ray diffraction, Scanning and Transmission Electron Microscopy and magnetic measurement is reported. Xray diffraction patterns indicate that the higher is the total iron concentration and temperature the higher is the crystal size of the magnetite obtained. Transmission Electron Microscopy studies of cellulose-magnetite beads revealed the distribution of magnetite nanoparticles inside pores of hundred nanometers. Magnetite as well as the cellulose-magnetite composites exhibit superparamagnetic characteristics. Field cooling and zero field cooling magnetic susceptibility measurements confirm the superparamagnetic behaviour and the blocking temperature for the magnetite with a mean size of 12.5 nm, which is 200 K. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：946 / 953

页数：8

共 45 条

[1]

ABDELHAMID MH, 1996, J SOLID STATE CHEM, V123, P249

[2] Synthesis of nanocrystalline magnetite by mechanical alloying of iron and hematite [J].

Alcalá, MD ;

Criado, JM ;

Real, C ;

Grygar, T ;

Nejezchleba, M ;

Subrt, J ;

Petrovsky, E .

JOURNAL OF MATERIALS SCIENCE, 2004, 39 (07) :2365-2370

[3] Size-dependent magnetic properties of MnFe2O4 fine particles synthesized by coprecipitation [J].

Chen, JP ;

Sorensen, CM ;

Klabunde, KJ ;

Hadjipanayis, GC ;

Devlin, E ;

Kostikas, A .

PHYSICAL REVIEW B, 1996, 54 (13) :9288-9296

[4] X-ray studies of regenerated cellulose fibers wet spun from cotton linter pulp in NaOH/thiourea aqueous solutions [J].

Chen, XM ;

Burger, C ;

Fang, DF ;

Ruan, D ;

Zhang, L ;

Hsiao, BS ;

Chu, B .

POLYMER, 2006, 47 (08) :2839-2848

[5]

CORNELL RM, 1989, J CHEM TECHNOL BIOT, V46, P115

[6] Influence of the precipitation pH of magnetite in the oxidation process to maghemite [J].

Correa, JR ;

Canetti, D ;

Castillo, R ;

Llópiz, JC ;

Dufour, J .

MATERIALS RESEARCH BULLETIN, 2006, 41 (04) :703-713

[7]

CORREA JR, 2006, C INT BAS DIM NAN JA

[8]

CORREA JR, 2005, P 8 INT C EL MICR IN

[9] Recent advances in the liquid-phase syntheses of inorganic nanoparticles [J].

Cushing, BL ;

Kolesnichenko, VL ;

O'Connor, CJ .

CHEMICAL REVIEWS, 2004, 104 (09) :3893-3946

[10] In situ synthesis of magnetite nanoparticles in carrageenan gels [J].

Daniel-da-Silva, Ana. L. ;

Trindade, T. ;

Goodfellow, Brian J. ;

Costa, Benilde F. O. ;

Correia, Rui N. ;

Gil, Ana M. .

BIOMACROMOLECULES, 2007, 8 (08) :2350-2357

← 1 2 3 4 5 →