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Citation: YANG Ze-Heng, ZHANG Wei-Xin, XU Jun, HAN Xiao-Zhao, CHEN Min. Controllable Synthesis of Mn₃O₄ Nanoparticles via Solvothermal Method[J]. Chinese Journal of Applied Chemistry, ;2005, 22(7): 722-725. shu

Controllable Synthesis of Mn₃O₄ Nanoparticles via Solvothermal Method

1.
School of Chemical Engineering, Hefei University of Technology, Hefei 230009

Corresponding author: ZHANG Wei-Xin,
Received Date: 18 July 2004
Available Online: 13 February 2005
Fund Project: 国家自然科学基金(20301005) (20301005)安徽省自然科学基金(00045112)资助项目 (00045112)

Mn₃O₄ nanoparticles were prepared at low temperatures with KMnO₄ and ethanol as reactants via a solvothermal method.With the help of spectrophotometer and X-ray diffractometer,the influences of temperature,reaction time and water content in the solvent on the reaction process as well as the product were investigated.Experiments showed that increasing reaction temperature accelerated the reaction rate,improved the crystallinity of Mn₃O₄ and made its particles grow larger.When reaction temperature was blow 100℃,the reaction slowed down.Water in the solvent can accelerate the reaction rate of KMnO₄,but higher water content leads to a new phase MnO(OH).Based on the experiments,the controllable synthesis of nanocrystalline Mn₃O₄ has been achieved.Nanocrystalline Mn₃O₄ powders with average particle sizes of 10 nm and 60 nm were obtained,respectively at 100℃ and 160℃.The products were characterized with X-ray powder diffraction and transmission electron microscopy.
- trimanganese tetroxide,
- nanoparticle,
- solvothermal synthesis
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Controllable Synthesis of Mn₃O₄ Nanoparticles via Solvothermal Method