Sage Journals: Discover world-class research

Abstract

β-FeOOH particles were prepared by forced hydrolysis of FeCl₃·6H₂O in microemulsion containing polyoxyethylene nonylphenylether (NP-4), octane and water. The samples were characterised using XRD and TEM. The effects of the molar ratio of water to NP-4 R, initial Fe³⁺ concentration and pH of the system on the morphology and size of the nanoparticles are discussed. The results show that the acidity and size of ‘water pool’ and the initial Fe³⁺ concentration are the main factors that affect the morphology of β-FeOOH particles. It is found that the optimum conditions for synthesising acicular β-FeOOH is R=6·0, [Fe³⁺]=0·02 mol L⁻¹ within the pH range 1·6–2·0. The crystal structure of as synthesised acicular β-FeOOH belongs to the monoclinic system with lattice parameters a=0·9981 nm, b=0·2948 nm, c=1·0485 nm, β=92·26°.

Keywords

MICROEMULSION METHOD ACICULAR BEATA-FEOOH MONOCLINIC SYSTEM SYNTHESIS

Get full access to this article

View all access options for this article.

References

Cornell

R. M.

and Schwertmann

: ‘The iron oxides’ 3, 58; 1996, New York, Cambridge Press.

Paterson

and Tait

J. M.

: Clay Miner., 1977, 12, 345–352.

Kiyama

and Takada

: Bull. Chem. Soc. Jpn, 1972, 45, 1923–1924.

Sullivan

E. O.

, Patel

R. O.

and Word

A. J.

: J. Colloid Interf Sci., 1991, 146, (2), 582.

Xie

Y.-Q.

: Chin. J. Inorg.c Chem., 1998, 15, (1), 50–53.

Wang

Z. Y.

, Thu

, Wang

Z. L.

, Qu

X. P.

, Yang

Y. X.

and Chen

Y. R.

: Chin. J. Appl. Chem., 2006, 23, (10), 1081–1084.

Zhang

, Zhao

and Zhang

C. B.

: Chin. J. Chem. Phys., 2004, 17, (5), 613–617.

Guo

, Wang

X. W.

and Li

G. Z.

: China Surfactant Detergent Cosmetics,1989, (6), 44–49.

Garti

, Aserin

, Ezra

, III and E. Wachtel: J. Colloid Interf Sci., 1995, 169, 428–436.

10.

Post

E. J.

and Buchwald

V. F.

: Am. Miner., 1991, 76, 272–277.

Synthesis of β -FeOOH with microemulsion

Abstract

Keywords

Get full access to this article

References