Photoelectrochemical Water Oxidation over Novel Semiconducting Zinc-Based Metal–Thiolate Framework

• DOI: 10.1021/acsami.2c07737
• Publication Date: 2022-08-12T13:08:30Z
• Authors: Anirban Ghosh; Sanjib Shyamal; Arnab Palui; Rabindra Nath Manna; Sujan Mondal; Manish Jana; Aswini Ghosh; Asim Bhaumik
• Keywords: Photoelectrochemistry

Designing an efficient catalyst for a sustainable photoelectrochemical water oxidation reaction is very challenging in the context of renewable energy research. Here, we have introduced new semiconducting porous zinc-thiolate framework via successful stitching "N" donor linker with triazine-based tristhiolate secondary building unit overall architecture. The introduction both and ligand synergistically modifies architecture by making it rigid, crystalline, three-dimensional, thermally stable, framework. Our novel used as n-type semiconductor revealed from solid-state UV-vis DRS spectroscopic analysis, ac dc conductivity Mott-Schottky plot. This semiconductor-based utilized reaction. It displayed high efficiency visible-light-driven oxygen evolution (OER) KOH medium using standard Ag/AgCl reference electrode. superiority this material was further low onset potential (0.822 mV vs RHE), photocurrent density (0.204 mA cm-2), good stability, O2 rate (77 μmol g-1 within 2 h), (ABPE 0.42%, IPCE 29.6% APCE 34.5%). Furthermore, porosity seems to be blessing performance due better mass diffusion electrolyte. A detailed mechanism OER analyzed through functional theory analysis suggesting future Zn-thiolate achieving