Open Accesst ‐ZrO 2 prepared by a novel zirconium oxalate synthesised solvothermally
Author(s) -
Ni Siyu,
Li Yafeng
Publication year - 2018
Publication title -
micro and nano letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.25
H-Index - 31
ISSN - 1750-0443
DOI - 10.1049/mnl.2017.0711
Subject(s) - oxalate , zirconium , oxalic acid , materials science , crystallinity , calcination , tetragonal crystal system , inorganic chemistry , nuclear chemistry , crystal structure , crystallography , chemistry , organic chemistry , metallurgy , catalysis , composite material
In this work, the authors intentionally employ the oxalic acid (OA) to replace terephthalic acid to synthesise a novel zirconium oxalate under the similar reaction condition with UIO‐66. The powder X‐ray diffraction and thermal gravimetric analysis confirm that as‐synthesised zirconium oxalate is a pure phase and oxalate serves as bridging ligand. Scanning electron microscope indicates that zirconium oxalate is aggregated together by several micrometres of needle‐like crystals. After zirconium oxalate is calcined at 500°C, the product is the pure tetragonal zirconia (ZrO 2 ) with high crystallinity. The morphology and particle size of ZrO 2 are basically unmodified with a comparison with the zirconium oxalate. X‐ray photoelectron spectroscopy reveals that the structural carbon acts as a phase transformation promoter to stabilise the tetragonal ZrO 2 .