Synthesis of mono-dispersed mesoporous Mn2O3 powders with micro-nanostructure for removing Congo red dye from aqueous solution

Add time:08/05/2019    Source:sciencedirect.com

Taking the importance and significance of wastewater treatment into consideration, mono-dispersed Mn2O3 powders with sphere-like morphology and mesopore features has been firstly synthesized from the thermal decomposition of MnCO3 which is prepared via a modified carbonization method using CO2 gas as the sole carbonate source. The measured isoelectric point, the pH value at which the ζ-potential is zero, of uniformly dispersed Mn2O3 particles is 9.13. Benefiting from the surface electrostatic interaction, as-prepared Mn2O3 microparticles has high adsorption capacity up to 135.5 mg/g toward Congo red dye in aqueous solution. Accordingly, the adsorption process of Congo red by Mn2O3 microspheres could be explained by Langmuir isotherm model and the pseudo-second-order kinetic model. Especially, it is necessary to point out that the removal efficiency of Mn2O3 toward Congo red dye still be well maintained at about 90.78% even after five cycles. Therefore, as-prepared Mn2O3 powders has potential application in large-scale wastewater treatment.

We also recommend Trading Suppliers and Manufacturers of Disperse Red 50 (cas 12223-35-7). Pls Click Website Link as below: cas 12223-35-7 suppliers

Prev:Development of a novel non-dispersive infrared multi sensor for measurement of gases in sediments
Next:A waterborne polyurethane-based polymeric dye with covalently linked disperse red 11)