Influence of anions on the morphology of nanophase alpha-MnO2 crystal via hydrothermal process.
The alpha-MnO2 nanocrystal nanowires, nanoplates, and nanoflowers have been successfully synthesized by a common hydrothermal treatment of different solutions containing KMnO4 and NH4X (X = Cl-, Ac-, NO3-, SO4(2-), and PO4(3-)) at 140 degrees C for 24 h. The influence of anions on the morphology of final product is discussed. According to our experimental results, we proposed a possible mechanism of the formation of different morphologies of nano-phase alpha-MnO2 and considered that the growing process was due to the initial plate-like MO(x) absorbing different anions and cooperation with them, which contributes to the final morphology of the product.
Gao
Yongqian
Y
Hefei National Laboratory for Physical Sciences at Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, PR China.
Wang
Zhenghua
Z
Liu
Shenglin Xiong Yi
SX
Qian
Yitai
Y
D000838:Anions / Q000737:chemistry*; D003460:Crystallization; D017895:Manganese Compounds / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission; D053758:Nanoparticles; D036103:Nanotechnology / Q000379:methods*; D010087:Oxides / Q000737:chemistry*; D010710:Phosphates / Q000737:chemistry; D010777:Photochemistry; D013499:Surface Properties; D013696:Temperature; D014961:X-Ray Diffraction
D000838:Anions; D017895:Manganese Compounds; D010087:Oxides; D010710:Phosphates; C016552:manganese dioxide