in this research work, we report a simple method called reflux condensation method for synthesizing co3o4 nanoparticles using cheap chemicals such as, cobalt acetate (precursor salt), sodium monododecyl sulphate - sds (surfactant) and n, n - dimethylformamide - dmf (solvent). the prepared materials were heat treated at 200, 400, 600 and 800 oc for each 2 h to get phase pure product. the calcine...

To solve the reduced output voltage caused by the high lithium redox potential of Co3O4 when applied as an anode material in full cells, an effective strategy is to partially replace Co by Mn to form MnCo2O4 without changing the original crystal structure. Herein, 3D hierarchical MnCo2O4 nanosheets arrays grown via a hydrothermal method on carbon cloths, as binder-free anodes for lithium-ion ba...

For p-type semiconductor nanoparticles, such as the cobalt oxide spinel, enhancing nanoparticle geometry can expose more of surface and bring up sensitivity applicability, pointing to even advantageous behaviour in comparison n-type semiconductors which are known for a somewhat faster reactivity. Here, we present strategy that relies on fostering simple synthetic route deliver reasonably or com...

Bis(4-hydroxyphenyl)methanone (BHPM), a common ultraviolet stabilizer and filter (USF), is extensively added in sunscreens; however, BHPM proven as an endocrine disruptor, posing serious threat to aquatic ecology, should be then removed. As sulfate radical (SO4•−) could useful for eliminating emerging contaminants, oxone appears favorable source reagent of SO4•− degrading BHPM. Even though coba...

We demonstrated that single-crystalline cobalt monoxide (CoO) hollow spheres and octahedra could be selectively synthesized via thermal decomposition of cobalt(II) acetylacetonate in 1-octadecene solvent in the presence of oleic acid and oleylamine. The morphologies and sizes of as-prepared CoO nanocrystals could be controlled by adjusting the reaction parameters. Cobalt oxide (Co(3)O(4)) hollo...

The use of transition metals as bifunctional catalysts for rechargeable zinc-air batteries has recently attracted much attention. Due to their multiple chemical valence states, the cobalt oxides are considered be promising oxygen reduction reaction (ORR) and evolution (OER). In this work, Ag-decorated Co3O4-nitrogen doped porous carbon composite (Co3O4-NC&Ag) were synthesized by annealing Z...

Introducing porosity is attractive for tailoring electronic, thermal, and mechanical properties of inorganic materials. Nanoporosity typically either inherent in crystallographic channels the structure or obtained by external templating during synthesis sintering. However, controllably engineering materials with laminated crystal structures without remains a challenge. Here, we demonstrate real...

Photocatalysis is a green technology which transforms available photon energy into useful chemical energy. The reaction mechanism based on the ability to create electron–hole pairs under appropriate light. Semiconductors have attracted great attention in photocatalysts because of their high photosensitivity. Spinel–type cobalt oxide nanorods been prepared by simple hydrothermal method using nit...

Lagerqvist, U. 2016. Solution-Chemical Synthesis of Cobalt and Iron:Zinc Oxide Nanocomposite Films. Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology 1356. 85 pp. Uppsala: Acta Universitatis Upsaliensis. ISBN 978-91-554-9520-6. The potentially most important challenges today are related to energy and the environment. New materials and methods ar...