Table of Contents
Indian Journal of Materials Science
Volume 2015, Article ID 918424, 7 pages
http://dx.doi.org/10.1155/2015/918424
Research Article

Simple Hydrolysis Synthesis of Uniform Rice-Shaped β-FeOOH Nanocrystals and Their Transformation to α-Fe2O3 Microspheres

1Department of Physics, C.C.S. University, Meerut 250004, India
2Department of Physics, University of Puerto Rico, Mayagüez, PR 00681-9000, USA
3Nanoscience Laboratory, Institute Instrumentation Centre, I.I.T. Roorkee, Roorkee 247667, India

Received 9 May 2015; Accepted 15 June 2015

Academic Editor: Marino Lavorgna

Copyright © 2015 Beer Pal Singh et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In the synthesis of nanostructure materials a specific emphasis has been focused on the control of shape and orientation of nanocrystals to obtain prerequisite properties of the materials. Nanorice is a new hybrid nanoparticle prolate geometry of nanoshells with reduced symmetry having new exciting optical behavior. Rice-shaped β-FeOOH nanocrystals have been synthesized by a simple hydrolysis chemical method using ferric aqueous solution and urea as surfactant. The successive calcination of β-FeOOH nanocrystals at 650°C results in the formation of the porous α-Fe2O3 (hematite) microspheres. The as-synthesized yield of β-FeOOH nanocrystals was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDAX), and optical spectroscopy. The successive transformation of rice-shaped β-FeOOH nanostructures into porous α-Fe2O3 (hematite) microspheres through calcination process was confirmed by XRD, SEM, and EDAX studies. The water contact angle of as-prepared α-Fe2O3 microspheres shows hydrophobic behavior of the material.