Affordable Access

Publisher Website

Synthesis and characterization of MnO2colloids

Authors
Journal
Radiation Physics and Chemistry
0969-806X
Publisher
Elsevier
Publication Date
Volume
78
Issue
11
Identifiers
DOI: 10.1016/j.radphyschem.2009.02.006
Keywords
  • Nanostructures
  • Electron Microscopy (Tem And Sem)
  • Oxidation
  • Gamma Radiolysis
  • Metal Oxide
Disciplines
  • Chemistry

Abstract

Abstract This work addresses the issue of radiation chemical synthesis of MnO 2 nanoparticles and also illustrates the ease of formation of nanorods and sheets by adroit manipulation of experimental conditions. The radiation chemical yield ( G-value) for reduction of Mn (VII) by the hydrated electron was found to be 0.27 μmol J −1 and 0.17 μmol J −1 respectively, when tert. butanol and isopropanol were used as scavengers in nitrogen-saturated solutions. The colloids formed upon irradiation of air-saturated solution and N 2-purged solution with tert. butanol as scavenger were found to be most stable. Irradiation of air-saturated solution containing 4×10 −4 M KMnO 4 at a dose of 1692 Gy resulted in the formation of nanorods of the dimension 100–150 nm and nanospheres in the range 10–20 nm. Irradiation of N 2-purged solution containing tert. butanol as scavenger for OH-produced reticulated structure of nanorods with length varying from 50 to 100 nm at a dose of 1692 Gy. Elemental analysis was performed using scanning electron microscope on MnO 2 formed by reduction and oxidation and the purity was found to be 98% of elemental Mn content.

There are no comments yet on this publication. Be the first to share your thoughts.

Statistics

Seen <100 times
0 Comments

More articles like this

Hydrothermal synthesis and characterization of orc...

on Journal of Crystal Growth Jan 01, 2006

Synthesis and characterization of α-MnO2nanowires:...

on Journal of Crystal Growth Jan 01, 2008

Synthesis of single-crystalline α-MnO2nanotubes an...

on Materials Science and Engineer... Jan 01, 2011
More articles like this..