Controlled synthesis of large-sized Cr2O3 via hydrothermal reduction
作者： Zhenzhao Pei , Xia Zhang
DOI: 10.1016/J.MATLET.2012.11.127
关键词:
摘要: Abstract In this paper, large sized polyhedron-like and plate-like Cr2O3 were firstly obtained via hydrothermal synthesis under the assistance of surfactant citric acid. The raw materials K2Cr2O7 HCHO. With increase acid from 0.02, 0.05, 0.1, 0.12 to 0.16 g in sequence, morphologies products changed accordingly. When it was 0.12 g reaction temperature 180 °C, polyhedrons with size 9–18 μm formed. keeping other conditions same, also obviously. 240 °C, different plates 5 μm 106 μm made up tiny particles. Influences spatial effects viscosity amount added temperatures on nucleation diffusion rate lead differences stacking manners precursor particles, then products. Microstructures observed by a field emission scanning electron microscope composition investigated X-ray techniques.
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