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With the continuous growth in world population and economy, the global energy demand is increasing rapidly. Given that non-renewable energy sources will eventually deplete, there is increasing need for clean, alternative renewable energy sources, which will be inexpensive and involve minimum risk of environmental pollution. In this paper, harnessing the activity of cupric reductase NDH-2 enzyme present in

This study presents an investigation on the role of Pt4+ in Pt-doped La1–xSrxCoO3 (LSPtCO) perovskite for oxygen evolution reaction (OER) activity. LSPtCO with Pt in the +4 oxidation state shows th...

Hydrazine electrooxidation is an important reaction as it assists in decreasing the OER overvoltage. Herein, we report the utilization of high entropy nano-catalyst alloy for the electrooxidation of hydrazine. High entropy nano-catalyst comprising five elements (Ag, Au, Pt, Pd, Cu) shows profound activity towards this molecule at low overvoltage. An intriguingly high entropy nano-catalyst prepared by the casting-cum-cryomilling method is endowed with unique catalytic activity for HzOR. Detailed analysis of gaseous product points to the formation of nitrogen as well as oxygen as the oxidation product, a sign of accompanying oxygen evolution reaction (OER). Interestingly, significant oxygen is detected at 1.13 V (RHE) in a neutral buffered medium, confirming that OER is functional at a voltage near to the thermodynamic voltage of 1.23V (RHE). The quantitative contribution of each hydrazine and OER reaction is ascertained which explains a vital insight into this reaction. Density functional theory calculations showed that both HzOR and OER assist each other where the electron-donating effect of H2O to the surface can reduce the endothermicity of the HzOR. Whereas, the electron acceptance of *NHNH2 helps in the favorable overlap of the HEA Fermi level and vacant states with the HOMO of H2O.

Developing a catalyst for green hydrogen production through water splitting, is one of the most promising ways to meet current energy demand. Here, we demonstrate spontaneous water splitting using gadolinium telluride (GdTe) with high hydrogen evolution rate. The spent catalyst can be reused after melting, which regains the original activity of the pristine sample. The phase formation and reusability are supported by the thermodynamics calculations. The theoretical calculation reveals ultra-low over-potential for hydrogen evolution reaction of GdTe caused by charge transfer from Te to Gd, hence enhancing the catalytic activity. Production of highly pure and instantaneous hydrogen by GdTe could accelerate fuel cell-based sustainable technologies.

A variety of research endeavors are directed to development of an alternative energy pathway of fossil fuels, which can reduce the emission of CO2, CO, due to burning of fossil fuels and reduce our over dependence on the fossile fuels.. In this regard, we report here, the generation of H2, a convenient, eco-friendly fuel from the Hydrazine oxidation reaction (HzOR) at room temperature. An intriguingly superior high entropy nano-catalyst comprises of five elements (Ag, Au, Pt, Pd, Cu) prepared by the casting-cum-cryomilling method, which endowed with unique catalytic activity was explored for HzOR. The continuous production of H2 elucidated that the catalyst is quite stable for the HzOR reaction at low overpotential, with no sign of ammonia formation. The reaction pathways leading to generation of hydrogen with nitrogen are discussed and deliberated.