期刊
FRONTIERS OF MATERIALS SCIENCE
卷 7, 期 4, 页码 387-395出版社
HIGHER EDUCATION PRESS
DOI: 10.1007/s11706-013-0227-3
关键词
SnO2 and Sb-doped SnO2; Sn precursor; Pechini method; thermal decomposition; nanoparticle
资金
- CONACYT
SnO2 and Sb-doped SnO2 particles were synthesized using the polymeric precursor method with different Sn salt precursors: SnCl2 center dot 2H(2)O, SnCl4 center dot 5H(2)O, or Sn citrate. Sb2O3 was used as the precursor of Sb, and the molar ratio of n(Sn):n(Sb) was held constant. FTIR and TGA/DTA were used to examine the influence of the Sn precursor on the formation and thermal decomposition of the Sn and Sn-Sb complexes. The calcination products obtained from heating the Sn and Sn-Sb complexes at 500 degrees C in air were analyzed using XRD and TEM analysis. The results revealed that the SnO2 and Sb-doped SnO2 formation temperatures depended on the nature of the Sn precursor. The calcination products were found to be SnO2 and Sb-doped SnO2 particles, which crystallized in a tetragonal cassiterite structure with a highly preferred (110) planar orientation. The Sn precursor and the presence of Sb in the SnO2 matrix strongly influenced the crystallinity and lattice parameters.
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