Ferromagnetism in colloidal Mn(super 2+)-doped ZnO nanocrystals
Article Abstract:
Nanocrystals of Zn(sub (1-x))Mn(sub x)O were produced using a novel colloidal chemistry technique. The manganese ions primarily substitute zinc ions in the hexagonal ZnO lattice, and part of them are ferromagnetically coupled up to room temperature even in isolated noninteracting nanocrystals and the rest of ions are magnetically disordered or uncoupled and the study highlights the advantages of working with noninteracting single domain particles of these intriguing materials.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2005
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Hydrothermal synthesis and pseudocapacitance properties of MnO(sub 2) nanostructures
Article Abstract:
The effect of varying the hydrothermal time to synthesis manganese oxide (MnO(sub 2)) nanostructures was investigated along with their influence on structural, morphological, compositional and electrochemical properties in supercapacitor electrode materials. MnO(sub 2) nanostructure prepared hydrothermally at 140 degree C for 6 h showed the best performance with the specific capacitance of 168 F/g when cycled at a constant current of 200 mA/g.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2005
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Fractionation of multiwalled carbon nanotubes by cascade membrane microfiltration
Article Abstract:
The fractionation of multiwalled carbon nanotubes (MWNT) is investigated. MWNT were purified and size-separated via a multistep microfiltration method which uses membranes of varying pore sizes. Analysis of membrane surface and permeate suspension deposits using scanning electron and atomic force microscopy showed that the samples were separated during the filtration. The fractionation of the MWNT by length was also verified.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1999
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