Characterization of manganese/cobalt oxide composites synthesized by chemical co-precipitation method

Abstract

Composite materials have emerged as new class of materials which presented unique and enhanced applications in the nanotechnology field. In this study, Cobalt oxide-manganese oxide composites have been prepared by chemical co-precipitation method. Cobalt oxide particles were first prepared and used as seeds for making composites with manganese oxide. These composites have been characterized by XRD, SEM, UV-Vis spectroscopy and FTIR. Characterization tools confirmed the formation of Manganese/Cobalt oxide composites. XRD results presented the diffraction peaks for cobalt oxide, manganese oxide and MnCo2O4 compounds. FTIR spectrum also indicated the formation of bonds between Mn, Co and O especially at 461 cm−1 shows MnCO2O4 bonding. These composite materials absorb visible light of wavelength 682 nm and can be used in light activated photocatalytic activity for the degradation of toxic dyes.

Dispersed CeOx Nanoflakes on Cu2SiO4 Nanosheets One-Step Deposition on Glassy Carbon for a Robust Energy Conversion System

“…The deformation of O–H bonds present in H 2 O showing adhered to the naked surface is assumed to be the cause of the bands present at 3450 and 1620 cm –1 . The vibrational frequencies of the Cu–O–Si and Cu–O bonds are observed at 570 and 495 cm –1 , respectively, confirming the production of a Cu 2 SiO 4 composite . The changes in the chemistry of the Si–O–Cu and Cu–O peaks are illustrated in detail in Figure b.…”

Faradically Dominant Pseudocapacitive Manganese Cobalt Oxide Electrode Materials for Hybrid Supercapacitors and Electrochemical Water Splitting

“…The slight change in the composition of Co 3 O 4 can affect its properties as well as its performance when utilized for different applications. For instance, doping of manganese in Co 3 O 4 can replace the Co ions in the structure, which can be easily understood from the formula Mn x Co 3−x O 4 37 However, the phase of the spinel structure can vary depending upon the doping concentration, i.e., a low concentration of Mn will form a tetragonal phase; however, high content of Mn tends to create a cubic spinel. 38 These oxide materials show considerable catalytic activity and capacity with admirable cyclic stability.…”