PMID- 21449415
OWN - NLM
STAT- MEDLINE
DCOM- 20110513
LR  - 20190715
IS  - 1533-4880 (Print)
IS  - 1533-4880 (Linking)
VI  - 11
IP  - 3
DP  - 2011 Mar
TI  - Preparation and characterization of polycrystalline La2Zr2O7 ultrafine fibres via 
      electrospinning.
PG  - 2514-9
AB  - Polyvinyl Pyrrolidone (PVP)/(Lanthanum nitrate and zirconium oxychloride) 
      microfibres were fabricated by electrospinning. SEM micrographs indicated that 
      the surface of the prepared composite microfibres was smooth, and the diameter of 
      the microfibres was in the range of 2 microm-5 microm. X-ray diffractormetry 
      (XRD) analysis revealed that the composite microfibres were amorphous in 
      structure. La2Zr2O7 porous hollow ultrafine fibres (PHUF) were fabricated by 
      calcination of the PVP/[La(NO3)3 + ZrOCl2] composite microfibres. The diameters 
      of La2Zr2O7 PHUF were smaller than those of the PVP/[La(NO3)3 + ZrOCl2] composite 
      microfibres. The surface of the ultrafine fibres became coarse with the increase 
      of calcination temperatures. La2Zr2O7 PHUF formed by nanoparticles were acquired 
      when calcination temperature was above 800 degrees C. Scanning electron 
      microscope (SEM) analysis indicated that the diameter of the synthesized La2Zr2O7 
      PHUF was in the range of 500 nm-800 nm. XRD analysis revealed that the crystal 
      structure of La2Zr2O7PHUF was found to be of the fluorite type when calcination 
      temperature was 800 degrees C-900 degrees C, and of the pyrochlore type at 1000 
      degrees C. The latter is cubic in structure with space group Fd3m. The 
      conductance of La2Zr2O7 PHUF is high to 5.19 S/cm2 and has no effect of 
      frequency. Possible formation mechanism for La2Zr2O7 PHUF was preliminarily 
      proposed.
FAU - Wang, Jinxian
AU  - Wang J
AD  - School of Chemistry and Environmental Engineering, Changchun University of 
      Science and Technology, Changchun 130022, PR China.
FAU - Dong, Xiangting
AU  - Dong X
FAU - Cui, Qizheng
AU  - Cui Q
FAU - Liu, Guixia
AU  - Liu G
FAU - Yu, Wensheng
AU  - Yu W
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
PL  - United States
TA  - J Nanosci Nanotechnol
JT  - Journal of nanoscience and nanotechnology
JID - 101088195
RN  - 0 (Macromolecular Substances)
RN  - 0 (Pyrrolidinones)
RN  - 6I3K30563S (Lanthanum)
RN  - C6V6S92N3C (Zirconium)
RN  - S38N85C5G0 (zirconium oxide)
SB  - IM
MH  - Crystallization/*methods
MH  - Electrochemistry/*methods
MH  - Lanthanum/*chemistry
MH  - Macromolecular Substances/chemistry
MH  - Materials Testing
MH  - Molecular Conformation
MH  - Nanostructures/*chemistry/*ultrastructure
MH  - Nanotechnology/methods
MH  - Particle Size
MH  - Pyrrolidinones/*chemistry
MH  - Rotation
MH  - Surface Properties
MH  - Zirconium/*chemistry
EDAT- 2011/04/01 06:00
MHDA- 2011/05/14 06:00
CRDT- 2011/04/01 06:00
PHST- 2011/04/01 06:00 [entrez]
PHST- 2011/04/01 06:00 [pubmed]
PHST- 2011/05/14 06:00 [medline]
AID - 10.1166/jnn.2011.3574 [doi]
PST - ppublish
SO  - J Nanosci Nanotechnol. 2011 Mar;11(3):2514-9. doi: 10.1166/jnn.2011.3574.