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Controllable synthesis of pure monodispersed zirconia nanopowders with tetragonal phase
Author(s) -
He Weiyan,
Guo Xia,
Zhao Xiaobing,
Liu Jinrong
Publication year - 2021
Publication title -
international journal of applied ceramic technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.4
H-Index - 57
eISSN - 1744-7402
pISSN - 1546-542X
DOI - 10.1111/ijac.13673
Subject(s) - materials science , cubic zirconia , crystallite , tetragonal crystal system , scanning electron microscope , analytical chemistry (journal) , raman spectroscopy , phase (matter) , lamellar structure , crystallization , zirconium , chemical engineering , fourier transform infrared spectroscopy , nuclear chemistry , crystallography , crystal structure , chromatography , chemistry , metallurgy , organic chemistry , ceramic , optics , composite material , engineering , physics
Nanopowders of pure zirconia have been synthesized using citric acid (CA)‐assisted lamellar liquid crystal template method. The microstructure of the zirconia powder prepared at the different mole ratios of CA to zirconium oxynitrate (ZN) was characterized by FT‐IR, X‐ray diffraction (XRD), laser particle size analyzer, Raman spectroscopy, and scanning electron microscope (SEM) methods. The phase structure of the sodium dodecyl sulfate (SDS)/C 10 H 21 OH/H 2 O system before and after adding mixing solution CA and ZN was determined by POM (Polarizing Optical Microscope). The results show that lamellar structure of the SDS/C 10 H 21 OH/H 2 O system after adding mixing solution CA and ZN is stable. The presence of CA inhibits agglomeration and growth of zirconia particle. The crystallite size of zirconia powders decreases and agglomerates lowly with addition of CA. Fourier transform infrared spectrometry (FI‐IR) analyses reveal that the structure of chelating organic complex is maintained in zirconia structure at high‐temperature calcination to cause oxygen vacancies which stabilizes the tetragonal phase of zirconia. The zirconia powders remained the single metastable tetragonal phase at the molar ratios of CA to ZN ranging from 1:3 to 5:1. The crystallite size of zirconia with spherical morphology varied from 32.2 to 20.1 nm with the increase of the molar ratio of CA to ZN in the range of 1:3 to 5:1.