Transition metal chelates with multifunctional 1,10-phenanthroline derivative towards production of hydrogen as alternative fuel from sea water: Design, synthesis, characterization and catalytic studies

摘要

In the present studies were focused on the preparation, characterization and catalytic behaviour of highly conjugative pi-acceptor type ligand with metal ions (M = Co2+, Zn2+, Cu2+ and Ni2+) as catalyst for evolution of hydrogen as alternate fuel. Then, the activated charcoal was obtained from natural origin such as coconut & rice husk enriched with oxygen derived functionalities and effectively remove cations (Na+, Mg2+), anions (Cl-, SO42-) ions and other contaminants from sea water (saline water). The prepared metal complexes behave as catalyst for the splitting of water into hydrogen gas under photo irradiation and electrochemical approach. Because of its redox characteristics and stabilization of unusual oxidation states during the catalytic cycle, the copper complex showed higher efficiency for the production of hydrogen gas (turnover number (TON) and turnover frequency (TOF) values, 15,600 & 8100) as compared to other chelates and related chelates in the literature sources. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.