Removal of Pb ions using green Co3O4 nanoparticles: Simulation, modeling, adsorption, and biological studies

Improving the Performance of a Co-CeO2 Catalyst for Hydrogen Production via Water Gas Shift Reaction by Addition of Transition Metal Oxides

“…When ZrO 2 and Nb 2 O 5 were used as the promoters for the Co-CeO 2 catalyst, the band area at 600 cm –1 increased owing to the enhanced number of oxygen vacancies, as confirmed via XPS. The vibrational bands at 478, 516, 617, and 679 cm –1 were assigned to the E g , F 2g , F 2g , and A 1g bands of Co 3 O 4 , respectively. , When TiO 2 and V 2 O 5 were used as promoters, the F 2g (516 cm –1 ) and A 1g bands (678 cm –1 ) were shifted. This shift was because TiO 2 and V 2 O 5 preferentially form a solid solution with Co.…”

Temperature dependent fabrication of various rod and rhombohedral-shaped mesoporous Co3O4 crystals and their capability towards elimination of toxic Cr(vi) ions from the aquatic environment

“…There are also a few research studies based on heavy metal removal by using different metal oxides and ferrite like materials. [26][27][28][29][30][31] Annually chemical waste coming out from diverse factories and industries leads to remarkable eco-system and environmental pollution. Most of the colored effluents including toxic metal compounds are discharged into various water bodies, for example, seawater, ponds, rivers, etc.…”

“…There are also a few research studies based on heavy metal removal by using different metal oxides and ferrite like materials. 26–31…”

Surface and Structural Modulation of Waste‐Derived, Boron‐Doped Carbon to Enhance its Adsorption Efficiency for Lead Removal from Wastewater

“…The experimental data fit the Elovich rate equation better than the other three models. In addition, simulation results suggest that the Co atom in the Co 3 O 4 NPs generates active delocalized surface states energetically favorable for Pb ion adsorption and removal [26] . The use of magnetic nanoparticles for lead removal offers several advantages, including high efficiency, low cost, and the potential for scale‐up in large wastewater treatment plants.…”

“…In addition, simulation results suggest that the Co atom in the Co 3 O 4 NPs generates active delocalized surface states energetically favorable for Pb ion adsorption and removal. [26] The use of magnetic nanoparticles for lead removal offers several advantages, including high efficiency, low cost, and the potential for scale-up in large wastewater treatment plants. However, challenges such as particle aggregation, surface fouling, and potential toxicity of the nanoparticles must be addressed to implement this technology in real-world scenarios successfully.…”