Home > Press > A new process for making much-sought iron nanospheres
Using a process that creates bubbles as hot as the surface of the sun, chemists are reporting development of a new method for making hollow hematite (iron oxide) nanospheres. The University of Illinois at Urbana-Champaign's Kenneth S. Suslick and Jin Ho Bang describe the synthesis of these iron nanoparticles in a report scheduled for the Feb. 28 issue of the Journal of the American Chemical Society, a weekly publication.
A new process for making much-sought iron nanospheres
Urbana-Champaign, IL | Posted on February 15th, 2007
Hollow nanospheres of metals and other inorganic materials are generating great interest because of their unusual properties and potential applications in drug delivery, electronic components, catalysts and other products. "We believe that this procedure will be easily extended to prepare other hollow inorganic materials," the researchers note. In the past, production of hollow hematite nanospheres required a time-consuming process and use of toxic hydrofluoric acid.
The new process uses sonochemistry, in which high-frequency sound waves are focused into a solution containing an iron compound and carbon nanoparticles. Those sound waves create tiny bubbles in the liquid. The collapse of those bubbles causes intense local heating with temperatures estimated at 9,000 F, which is nearly as hot as the surface of the sun. The sonochemical process forms iron spheres around the carbon nanoparticles. On exposure to air, the iron rapidly oxidizes, which burns away the carbon core, leaving hematite spheres one thousandth the diameter of a red blood cell.
About Journal of the American Chemical Society
The most cited journal in chemistry, the Journal of the American Chemical Society (JACS) received 257,810 total citations and an impact factor of 7.419, while publishing more articles (3,391) than any other journal in the category.
For more information, please click here
Kenneth S. Suslick, Ph.D.
University of Illinois at Urbana-Champaign
Urbana, Illinois 61801
Fax: 217 244-3186
Copyright © Journal of the American Chemical Society
If you have a comment, please Contact
Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.
Scientists Use Gold/Silver Nanoalloy to Measure Oxidant Compounds Accurately March 11th, 2014
Atomically Thin Solar Cells March 11th, 2014
Caltech Researchers Create Light-Bending Silicon Chip: Bending the Light with a Tiny Chip March 10th, 2014
Production of Bioactive Material for Quick Treatment of Bone Damages March 10th, 2014
Simon Fraser University Completes Installation of Electron Microscopes from FEI: SFU’s new multi-million-dollar Centre for Soft Materials now offers the most advanced suite of microscopes in Western Canada March 11th, 2014
Harris & Harris Group Notes D-Wave's Article in Phys.Org March 11th, 2014
Malvern specialist to explore use of Nanoparticle Tracking Analysis for characterizing extracellular vesicles at ISEV 2014 March 11th, 2014
Thailand's Next Move on Research and Innovation March 11th, 2014