Co3O4 nanoparticles synthesized from waste Li-ion batteries as photocatalyst for degradation of methyl blue dye

Nanomaterial Synthesis from End‐of‐Cycle Products: A Sustainable Way of Waste Valorisation

“…The temperature of chemical vapor deposition method was fixed at 650-800 °C [36]. Parasuram Cobalt oxide Lithium ion battery Chemical leaching [16] Cadmium sulfide Nickel-cadmium battery Chemical leaching [17] Silver Spent silver oxide button cell batteries Chemical leaching, purification, remical reduction [18] Zinc oxide Zinc-carbon batteries Heating in a horizental tube furnace at 900 °C in argon atmosphere [19] Zinc oxide, manganese oxide Zinc-carbon batteries Heating in a horizental tube furnace at 900 °C in argon atmosphere [20] Cobalt ferrite Lithium ion battery Combined sol-gel and hydrothermal method, coprecipitation [21][22] Lead iodide, perovskite NCs Car batteries Roasting at 500-600 °C and dissolution [23] Polyaniline/graphite nanocomposites Spent battery powder (SBP) Oxidative polymerization [24] Nickel-manganese-zinc/manganese-zinc ferrites Zinc-manganese, nickel-metalhydride, zinc-carbon batteries Sol-gel, leaching, and precipitation [25][26][27][28] Cobalt ferrite Lithion ion battery Coprecipitation [29] Manganese dioxide/graphene nanocomposites Zinc-manganese oxide acidic dry batteries Precipitation method [30] Figure 2. Schematic experimental setup and steps to synthesize manganese oxide and zinc oxide nanoparticles [20].…”

Synthesis of CuxCo3−xO4 nanoparticles by a sonochemical method and characterization of structural and optical properties and photocatalytic activity for the degradation of methylene blue

“…They are widely used in gas sensors, pH sensors, catalysts, anode materials in Li-ion rechargeable batteries, supercapacitors, electrochemical sensors, photocatalysts, solar absorbers and electrochromic materials. [1][2][3][4][5][6][7][8][9] Co 3 O 4 is a p-type antiferromagnetic semiconductor and mixed valence compound (CoO$Co 2 O 3 ). It adopts the normal spinel structure.…”

Application of Co3O4 in Photoelectrocatalytic Treatment of Wastewater Polluted with Organic Compounds: A Review

“…Because of its superior catalytic activity, low cost (in comparison with Au, Ag, Pt), and high permanence, O 2 has little capability to prevent "toxicity" (readily adsorbed into an intermediate, hard to desorb), which influences the catalysis [40,41]. One-dimensional (1D) Co 3 O 4 is currently attracting a great deal of attention because of its high conductivity, large surface area, wide optical response range, chemical stability [42,43], and its expected synergistic effect with PC and EC [44,45]. Spinel Co 3 O 4 may be a promising candidate to replace precious metals as anode materials.…”