TY - JOUR
T1 - Synthesis of high-purity zircon, zirconia, and silica nanopowders from local zircon sand
AU - Musyarofah,
AU - Lestari, Novia Dwi
AU - Nurlaila, Rizka
AU - Muwwaqor, Nibras Fuadi
AU - Triwikantoro,
AU - Pratapa, Suminar
N1 - Publisher Copyright:
© 2018
PY - 2019/4/15
Y1 - 2019/4/15
N2 - High-purity zircon (ZrSiO 4 ) nanopowder was successfully produced from Indonesian natural zircon sand using a low-cost purification approach via magnetic separation, immersion in HCl, and reaction with NaOH, followed by a top-down nanosizing process using wet ball-milling for 10 h and annealing at 200 °C for 2 h. Furthermore, polymorph zirconia (ZrO 2 – amorphous, tetragonal, and monoclinic) and silica (SiO 2 – amorphous and cristobalite) nanopowders were also successfully derived from the purified zircon powder using a bottom-up method via alkali fusion and co-precipitation processes followed by calcination. The crystallite size of the powders was estimated from X-ray diffraction (XRD) data analysis to give 40, 31, 61, and 149 nm, respectively, for the zircon, tetragonal- and monoclinic-zirconia, and cristobalite. Microstructural characteristics of the zircon, silica, and zirconia nanopowders were revealed in transmission electron microscopy (TEM) images which confirmed that the average sizes of the particles were in a good agreement with the XRD estimated values.
AB - High-purity zircon (ZrSiO 4 ) nanopowder was successfully produced from Indonesian natural zircon sand using a low-cost purification approach via magnetic separation, immersion in HCl, and reaction with NaOH, followed by a top-down nanosizing process using wet ball-milling for 10 h and annealing at 200 °C for 2 h. Furthermore, polymorph zirconia (ZrO 2 – amorphous, tetragonal, and monoclinic) and silica (SiO 2 – amorphous and cristobalite) nanopowders were also successfully derived from the purified zircon powder using a bottom-up method via alkali fusion and co-precipitation processes followed by calcination. The crystallite size of the powders was estimated from X-ray diffraction (XRD) data analysis to give 40, 31, 61, and 149 nm, respectively, for the zircon, tetragonal- and monoclinic-zirconia, and cristobalite. Microstructural characteristics of the zircon, silica, and zirconia nanopowders were revealed in transmission electron microscopy (TEM) images which confirmed that the average sizes of the particles were in a good agreement with the XRD estimated values.
KW - Amorphous silica
KW - Cristobalite
KW - Monoclinic zirconia
KW - Nanopowder
KW - Tetragonal zirconia
KW - Zircon
UR - http://www.scopus.com/inward/record.url?scp=85059104966&partnerID=8YFLogxK
U2 - 10.1016/j.ceramint.2018.12.152
DO - 10.1016/j.ceramint.2018.12.152
M3 - Article
AN - SCOPUS:85059104966
SN - 0272-8842
VL - 45
SP - 6639
EP - 6647
JO - Ceramics International
JF - Ceramics International
IS - 6
ER -