| Title | Efficient hybrid water splitting and direct electrooxidation of organic dye from wastewater using copper cobalt sulphide nanosheets |
|---|---|
| ID_Doc | 13101 |
| Authors | Joshi, KK; Chauhan, SV; Pataniya, PM; Sumesh, CK |
| Title | Efficient hybrid water splitting and direct electrooxidation of organic dye from wastewater using copper cobalt sulphide nanosheets |
| Year | 2024 |
| Published | |
| Abstract | One potential method to lower the cost of electrocatalytic green hydrogen production is to use metal sulfidebased electrocatalysts in hybrid water electrolysis. This work uses a one-step hydrothermal synthesis to create copper cobalt sulphide (CuCo2S4) nanosheets for hybrid water splitting. Significant water-splitting activity was achieved using urea and organic dye (methylene blue) as supporting electrolytes to avoid delayed OER kinetics. For the KOH + urea and KOH + organic dye electrolytes, the working electrode displays an overpotential of 1.37 V against RHE and 1.30 V vs RHE, respectively, to yield a current density of 10 mA/cm2. The CuCo2S4 working electrode exhibits an overpotential of 212 mV versus RHE and 158 mV vs RHE at 10 mA/cm2 current density while monitoring hydrogen evolution reaction (HER) activity. For the KOH + organic dye electrolyte, the electrode exhibits exceptionally efficient electrocatalytic water splitting, with an overpotential of 1.50 V at a current density of 10 mA/cm2. At high current densities, the CuCo2S4 working electrode shows exceptional stability at industry standards throughout a broad pH range of basic, acidic, neutral, and saline environments. The use of several supporting electrolytes demonstrates an overall water splitting that is energy-efficient. Wastewater treatment can be accomplished through a circular economy strategy by merging the goals of environmental remediation (dye degradation) and renewable energy production (hydrogen evolution). This approach promotes sustainable growth, reduces waste, and encourages resource recovery. According to the internationally endorsed Sustainable Development Goals (SDGs), treating wastewater has the potential to help achieve 11 of the 17 SDGs. |
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