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Synthesis, characterization, and optimization of α‐Fe 2 O 3 /silica nanocomposites using homogenous precipitation method
Author(s) -
Tari Faeze,
Shekarriz Marzieh,
Zarrinpashne Saeed,
Ruzbehani Ahmad
Publication year - 2017
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.12684
Subject(s) - calcination , hematite , materials science , nanocomposite , central composite design , response surface methodology , precipitation , chemical engineering , specific surface area , composite number , chloride , characterization (materials science) , analytical chemistry (journal) , composite material , nanotechnology , metallurgy , chromatography , catalysis , organic chemistry , chemistry , meteorology , physics , engineering
The purpose of this study was to systematically synthesize and characterize the high surface area 10 wt% nanocomposites of α‐Fe 2 O 3 (hematite)/silica using a simple and economically effective homogenous precipitation ( HP ) route via Response Surface Method combined with Central Composite Design ( CCD ). Accordingly, the RSM ‐ CCD approach including 20 experiments was designed to investigate the effects of three factors including concentration of iron chloride solution, pH and calcinations temperature on the final surface area of α‐Fe 2 O 3 /silica nanocomposites. The optimum surface area was 373 m 2 /g at the condition including iron chloride concentration of 0.018 mol/L, pH =8.95, and calcination temperature of 573°C.