Operand synchrotron-based XRDThe preparation of alpha-MnO2 nanotubes (M-NT) decorated with platinum nanoparticles (Pt/M-NT) by a simple reduction and mechanical stirring method is presented in this work, which aims to design a highly active catalyst for the Li-O-2 battery. The obtained ...
The analysis of field emission scanning electron microscope (FE-SEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) confirmed the loading of alpha-MnO2 on the surface of Pal and characterized the surface of the composite. The surface area of alpha-MnO2/Pal composite was...
The structure and morphology of these materials were analyzed by SEM, HRTEM, XRD, and XPS, while their electrochemical properties were tested in the 1 M Na2SO4 aqueous electrolyte by cyclic voltammetry, galvanostatic charge-discharge measurements, and electrochemical impedance spectroscopy. The specific...
A single-phase alpha-MnO2 without any large stabilizing cations was successfully prepared by starting from hollandite-type (NH4)xMn8O16 and quenching from 440 C during heating in flowing Ar. The unit-cell dimension was determined by XRD analysis to be a=10.308(2) angstroms and c=2.854(1) ...
In this work, low cost alpha-MnO2 nanowires and alpha-MnO2 nanowires supported on carbon Vulcan (alpha-MnO2/C) have been synthesized via a simple and facile hydrothermal method for application in microbial fuel cells. The prepared samples have been characterized by X-ray diffraction (XRD), ...
Structures of the Graphene/alpha-MnO2 nanocomposites were characterized using Xray diffraction (XRD) and Raman Spectroscopy techniques. Surface morphology of the electrodes was characterized using scanning electron microscopy (SEM). Electrochemical cycling tests of the Graphene/alpha-MnO2 nanocomposite cathodes...
The morphological and structural evolution of alpha-MnO2 nanorods during their growth were tracked by Powder X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and BET analysis. The crystallization of alpha-MnO2 nanorods was found to proceed through ...
The microstructure and chemical composition of as-prepared samples were characterized by a series of means, such as XRD, SEM, TEM, HRTEM, XPS and BET. The morphology of alpha-MnO2, delta-MnO2 and 3D-MnO2 were 3D star-like nanowires, tremella-like nanosheets and 3D snowflake-like ...
The successful synthesis of the hybrid material was studied by XRD, Raman, BET, FESEM with EDX, FTIR and TEM analyses. An efficient N-alkylation reaction of substituted aromatic amines with aromatic alcohols was carried out under solvent-free aerobic conditions in the presence of catalytic amount...
The effects of hydrothermal temperature on the morphology, crystal structure and specific area of the MnO2 were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD) and BET measurements. The electrochemical capacitive properties of the manganese dioxides with different morphologies...