title: Beta-MnO2 3D nanostructures: mineralizer-assisted synthesis, characterization, and growth mechanism.
abstract: The beta-MnO2 three-dimensional (3D) nanostructures were synthesized in large area by a mineralizer-assisted hydrothermal route. KNO3 was introduced as inorganic mineralizer to direct the growth of beta-MnO2 3D nanostructures from Mn(NO3)2 solutions. The samples were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), and transmission electron microscopy (TEM). Possible growth mechanism of beta-MnO2 3D nanostructures was proposed based on comparative experiments, indicating that KNO3 mineralizer and the concentration of Mn(NO3)2 solution were the two decisive factors in the fabrication of beta-MnO2 3D nanostructures.
authors.affiliation: Department of Chemistry, China University of Petroleum, Qingdao, Shandong 266555, PR China.
authors.forename: Fu
authors.initials: F
authors.lastname: Zhou
authors.forename: Xuemei
authors.initials: X
authors.lastname: Zhao
authors.forename: Cunguang
authors.initials: C
authors.lastname: Yuan
authors.forename: Hai
authors.initials: H
authors.lastname: Xu
mesh_terms: D003460:Crystallization; D008345:Manganese / Q000737:chemistry; D017895:Manganese Compounds / Q000737:chemistry*; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D053758:Nanoparticles / Q000737:chemistry; D049329:Nanostructures / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods*; D009573:Nitrites / Q000737:chemistry; D009942:Organometallic Compounds / Q000737:chemistry; D010087:Oxides / Q000737:chemistry*; D010316:Particle Size; D013499:Surface Properties; D014961:X-Ray Diffraction
chemical_list: D017895:Manganese Compounds; D009573:Nitrites; D009942:Organometallic Compounds; D010087:Oxides; D008345:Manganese; C041349:potassium nitrite; C016552:manganese dioxide