Single-step synthesis of activated carbon/γ-Fe2O3 nano-composite at room temperature

Green synthesis of copper oxide nanoparticles impregnated on activated carbon using Moringa oleifera leaves extract for the removal of nitrates from water

“…It can be observed that both the pure carbon and the impregnated ones display high surface area, in this way highlighting their potentiality as adsorbents. The samples impregnated with 0.5 %, 1.0 %, and 1.5 % copper, over the three contact periods, underwent reduction in all analyzed parameters, whose properties may be related to pore blockage by copper nanoparticles formed after the impregnation process …”

“…The samples impregnated with 0.5 %, 1.0 %, and 1.5 % copper, over the three contact periods, underwent reduction in all analyzed parameters, whose properties may be related to pore blockage by copper nanoparticles formed after the impregnation process. [1,11,34] In the morphologies evaluated by TEM images of pure activated carbon and samples impregnated with 0.5 %, 1.0 %, and 1.5 % copper, over a contact period of 36 h, shown in Figure 1, it is possible to observe that the carbon matrix of grayish colour, characteristic of pure activated carbon, exhibits darker coloured particles and clusters, which are characteristic of metal particles. It is also possible to verify that the particles have a size inferior to 100 nm, as can be observed by comparing with the equipment scale bar, thus indicating that the reduction method using Moringa oleifera extract is efficient at obtaining copper nanoparticles.…”

The adsorption of basic dye (Alizarin red S) from aqueous solution onto activated carbon/γ-Fe2O3 nano-composite: Kinetic and equilibrium studies

“…MAC nano-composite was synthesized as previously described with some modifications [21]. As a pre-treating step, 20 g of purified activated carbon reacted with 150 mL 5 M nitric acid solution and refluxed for 1 h at 70°C to achieve treated activated carbon (TAC; BET: 598 m 2 g À 1 ).…”

Synthesized Magnetic Manganese Ferrite Nanoparticles on Activated Carbon for Sulfamethoxazole Removal

“…The physical and chemical properties of manganese ferrites depend on their microstructural characteristics, which can be controlled through employing various fabrication methods [25]. To incorporate magnetic particles on PAC, the production condition like metal oxide/AC mass ratios has been frequently reported in many studies [14][15][16][17][18][19][20]. However, the effects of the thermal conditions in the morphology of the anchored particles and the SMX adsorption capacity have not explored well.…”