‘Synthesis And Characteriation Of Low Dimensional Metal-Organic Framework Type Catalyst For Facile Generation Of H2 Fuel By Electrolysis’’

Abstract

The increase in world’s energy consumption during the last decades is a result of both the global rise in population and of the changes in the standard of living. Indicatively, the average global power demand is predicted to be 30 and 46 TW in 2050 and 2100 respectively. The rapid rising of clean energies in global energy markets requires advanced and large-scale energy conversion and storage technologies to meet the current power grid systems. Elemental Hydrogen (H2) is a clean fuel and has tremendous potential for future sustainable society. therefore, the production of elemental hydrogen by electrochemical water splitting is a potential route to store pure energy from intermittent energy source such as solar, or wind but it has been limited by the sluggish kinetics of the anodic reaction, oxygen evolution reaction which increase the over potential of the cell (OER; 4OH- → O2 + 2H2O + 4e- in alkaline or 2H2O → O2 + 4H+ + 4e- in acid). Although, state of the art electro-catalyst synthesized of rare elements and their oxide (i.e. Iro2 and Ruo2) show excellent activity, their scares and high cost has been restricting its industrial application for many years, Currently, metal organic framework made of cheap and abundant materials (transition metal complexes) have attracted wide research interest. Herein, we report the layering technique for synthesizing three Ni-based coordination polymers from Ni (NO3)2.6H2O and 2-(5-Phenyl-2H-1, 2, 4-triazol-3-yl) pyridine. The compound was characterized by single crystal x-ray diffraction. 0-D crystal structure was shown in compound 1 while compound 2 and 3 were both crystallized in 1-D but with different linker such as and 1,2 bis bipyridine ethane and 4,4 biprydine respectively. The electrochemical linear sweep voltammetry and impedance spectroscopy depict compound 3 shown high activity and stability towards oxygen evolution reaction in alkaline solution