title: Influence of anions on the morphology of nanophase alpha-MnO2 crystal via hydrothermal process.
abstract: 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.
authors.affiliation: Hefei National Laboratory for Physical Sciences at Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, PR China.
authors.forename: Yongqian
authors.initials: Y
authors.lastname: Gao
authors.forename: Zhenghua
authors.initials: Z
authors.lastname: Wang
authors.forename: Shenglin Xiong Yi
authors.initials: SX
authors.lastname: Liu
authors.forename: Yitai
authors.initials: Y
authors.lastname: Qian
mesh_terms: 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
chemical_list: D000838:Anions; D017895:Manganese Compounds; D010087:Oxides; D010710:Phosphates; C016552:manganese dioxide