Catalytic performance of Mn3O4 and Co3O4 nanocrystals prepared by sonochemical method in epoxidation of styrene and cyclooctene

Characterization of Cobalt Oxide Nanoparticles Prepared by the Thermal Decomposition

“…1 Among them, spinel-type cobalt oxide (Co 3 O 4 ) as a versatile semiconducting material has achievable applications in gas sensors, 2,3 heterogeneous catalysts, [4][5][6] electrochemical devices, 7 Li-ion batteries, [8][9][10][11] magnetic materials 12,13 and photocatalysts. 14,15 In recent years, the increasing interest has been focused on the synthesis of Co 3 O 4 nanostructures because of the influences of particle size on their properties and applications.…”

Green synthesis of Co3O4nanoparticles viaAspalathus linearis: Physical properties

“…Being an antiferromagnetic p-type semiconductor, it is a multi-functional material with several practical applications such as heterogeneous catalysis, electrochromic sensors, pigments and dyes, energy storage, and anode materials in Li-ion rechargeable batteries (1)(2)(3)(4)(5)(6). Several physical and chemical methodologies to synthesize nanocrystalline Co 3 O 4 were used: thermal decomposition of cobalt oxalate, hydrothermal reaction, thermal decomposition of sol-gel derived oxalates, solution combustion method, microwave process, combustion route, among others (7)(8)(9)(10)(11)(12)(13).…”

Applications of the “nano to bulk” Mn oxides: Mn oxide as a Swiss army knife

“…Such amorphous structure has defects that may act as the active sites. Compared with nanocrystalline Mn 3 O 4 [72], the catalysts show a similar activity in epoxidation of olefins under softer conditions. These layered Mn oxides could be also prepared more easily without using any ultrasound power, organic solvents or organic compounds.…”