The doped Co-cryptomelane type manganese oxide catalysts were prepared using two type approaches, direct and indirect methods. The products were obtained by the reaction between KMnO4, glucose and small quantity of CoNO3 ...

Birnessite can be used as an adsorbent of heavy metals found on the aquatic environment and solid waste. This could occur because birnessite is a porous material with a large surface area and are able to exchange cations ...

Fresh Palm oil mill effluent (POME) is a thick brownish colour in the viscous and colloidal suspension, having an unpleasant odour and high value of BOD and COD, thus sensitive to environmental issues. The most widely ...

CaO is a basic catalyst which is frequently used for the synthesis of biodiesel. The development of catalyst especially CaO has become attractive topic for research in order to obtain good catalytic activity so that biodiesel ...

The synthesis of hydroxyapatite (HAp) from seashell (Geloina coaxans) using precipitation method has been done . The seashell (Geloina coaxans) and H3PO4 were used as sources of calcium and phosphate. Molar ratio of precursor ...

The CTF-ZnFe2O4 composite catalyst is a combination of two CTF (Covalent triazine framework) and ZnFe2O4 materials. CTF is an organic polymer material that has a triazine ring bond. ZnFe2O4 material is a mineral with a ...

The manganosite type manganese oxide has been used for degradation of methylene blue using hydrogen peroxide (H2O2) on an oxidant. The manganese oxide has been synthetis using sol-gel method with KMnO4 and glucose as an ...

Birnessite and cryptomelane are typical layered and tunnel manganese oxides and both can be used as a heterogeneous catalyst for the degradation of organic wastes using heterogeneous Fenton reaction. This study aims to ...

The high level of organic contaminants in Palm Oil Mill Effluent (POME) was reflected in its higher values of Chemical Oxygen Demand (COD), thus requiring a proper treatment before they could be released into an environment. ...

Doping by transition metal ions is conducted as an effort to reduce the bandgap and shift the light absorption region. In this study, the manganese oxides were first synthesized by reflux method and doped with ion Ag+ ...