Facile Synthesis of NiO–CuO/Activated Carbon Nanocomposites for Use in the Removal of Lead and Cadmium Ions from Water

Abstract

In this work, activated carbon (AC) was synthesized and then modified using nickel(II) oxide and copper(II) oxide. Pure-AC, 10, 20, 30, and 40 wt % nanohybrid NiO–CuO/AC nanocomposites (χ-NC/AC NCs) were characterized using XRD, IR, EDS, surface area, and FE-SEM techniques. Furthermore, the adsorbents obtained were tested for their ability to remove hazardous Pb(II) and Cd(II) from water. The fabricated x-NC/AC NC adsorbents showed the highest adsorptive performance toward the adsorption of Pb(II) and Cd(II) from water. The 30-NC/AC NC adsorbent showed the complete removal of Pb(II) at pH = 5 and Cd(II) at pH = 7 within 30 min. Overall, the obtained superior experimental results suggest that the adsorptive performance of AC was greatly enhanced after loading hybrid metal oxide nanoparticles, so its application in water treatment is potential and applicable.

MXene-Embedded Porous Carbon-Based Cu2O Nanocomposites for Non-Enzymatic Glucose Sensors

“…It might be due to the fact that the Cu 2 O particles were growing in the micropores as well as the presence of MXene in pores of activated carbon. 45 This finding was also seen in FESEM of the Cu 2 O/M/AC composite. This deposition of metal oxides in the pores will enhance the active sites of the glucose sensor catalyst.…”

“…It exhibits reduced surface area for the Cu 2 O/M/AC composite as compared with the palmyra palm flower-based activated carbon. It might be due to the fact that the Cu 2 O particles were growing in the micropores as well as the presence of MXene in pores of activated carbon . This finding was also seen in FESEM of the Cu 2 O/M/AC composite.…”