10 research outputs found
Synthesis of Well-Defined, Surfactant-Free Co<sub>3</sub>O<sub>4</sub> Nanoparticles:The Impact of Size and Manganese Promotion on Co<sub>3</sub>O<sub>4</sub> Reduction and Water Oxidation Activity
Abstract: A surfactant-free synthetic route has been developed to produce size-controlled, cube-like cobalt oxide nanoparticles of three different sizes in high yields. It was found that by using sodium nitrite as salt-mediating agent, near-quantitative yields could be obtained. The size of the nanoparticles could be altered from 11 to 22 nm by changing the cobalt concentration and reaction time. These surfactant-free nanoparticles form ideal substrates for facile deposition of further elements such as manganese. The effect of size of the cobalt oxide nanoparticles and the presence of manganese on the reducibility of cobalt oxide to metallic cobalt was investigated. Similarly, the effect of these parameters was investigated with a visible light promoted water oxidation system with cobalt oxide as catalyst, together with [Ru(bpy) 3] 2+ light harvester dye and an electron acceptor. Graphical Abstract: A novel surfactant-free synthetic route has been developed to produce size-controlled, cube shaped cobalt oxide nanoparticles in high yields. [Figure not available: see fulltext.]. </p
Interplay Between Cation Distribution and Magnetic Properties in MgM0.5Mn1.5O4 (M = Al, Ga) and Al1.5Mn1.5O4 Spinels
In-situ reduction of promoted cobalt oxide supported on alumina by environmental transmission electron microscopy
One-pot hard template synthesis of mesoporous spinel nanoparticles as efficient catalysts for low temperature CO oxidation
Green catalytic valorization of hardwood biomass into valuable chemicals with the use of solid catalysts
Results of the study on green valorization of hardwood biomass into
valuable chemicals with the use of solid catalysts were described. The heterogeneous
catalytic processes of hemicelluloses and cellulose hydrolysis, wood oxidative
fractionation and lignin depolymerization in supercritical spirits are suggested
to employ for the green biorefinery of hardwood to xylose, pure cellulose, glucose,
alcohols and liquid hydrocarbons