Potentiodynamic, impedance measurements were carried out on 304 stainless steel in 0.5N, 1.0, 2.0 and 5.0 N H2SO4 solutions. X-ray photoelectron spectroscopic [XPS] studies carried out on 304 stainless steel in H2SO4 solutions revealed the existence of CrOOH, Cr2O3, -Fe2O3, FeOOH, Mn2O3, Mn3O4, MnS, Ni (OH)2, Ni2O3, NiO, sulphides. The passive film found to contain chromium oxide inner layer an...

Microwave or ultrasonic treatment of metal alkoxides presents a fast, low cost route to both anode and cathode nanomaterials for Li-ion battery applications. Here, we demonstrate the formation of LiMPO4 (M = Fe, Mn) and Mn3O4 nanostructures via this simple route which exhibit excellent electrochemical performances. This approach opens up a new avenue for the targeted design of nanostructured ma...

Constructing heterojunctions and hollow multi-shelled structures can render materials with fascinating physicochemical properties, have been regarded as two promising strategies to overcome the severe shuttling sluggish kinetics of polysulfide in lithium–sulfur (Li–S) batteries. However, a single strategy only take limited effect. Modulating catalytic hosts synergistic effects are urgently desi...

This study investigated the effect of oxides on removal As when present in simple mixtures with granular activated carbon (GAC) particles. The performance these was compared other reported GAC-based adsorbents. A standard curve for ultraviolet adsorption vs. concentration obtained using silver diethyldithiocarbamate (SDDC) method to evaluate various samples. preliminary carried out find optimal...

Manganese oxide nanoparticles (Mn3O4-NPs) were prepared using precipitation method. The prepared nanoparticles were characterized by a number of techniques, including X-ray diffraction (XRD) analysis, scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Fourier transforms infra red (FT-IR) spectroscopy. The XRD pattern showed that the structure of...

Minerals exposed to moist air stabilize thin water films that drive a score of chemical reactions great importance water-unsaturated terrestrial environments. In this study, we identified Mn (oxy)(hydr)oxide nanocoatings formed by the dissolution, oxidation and precipitation in oxygenated grown on rhodochrosite (MnCO3) microparticles. Nanocoatings could be vibrational spectroscopy, X-ray diffra...