Poly(N-vinyl-2-pyrrolidone) Stabilized Pd-Cu Nanoparticles as Highly Efficient Catalysts for Hydrogen Generation from Hydrolysis of Hydrazine Borane

Abstract

In this study, it was aimed to synthesize an economical and efficient nanocatalyst in order to contribute to hydrogen production technologies. For this purpose, Pd-Cu bimetallic nanoparticles stabilized with PVP at room conditions were prepared using the classical alcohol reduction technique, which is an efficient and environmentally friendly method. The nanoparticles were characterized by spectroscopic methods such as XRD, UV-vis, TEM, TEM/EDX, SEM, SEM-elemental mapping, and FTIR and used as catalysts in the catalytic hydrolysis of hydrazine borane to create an efficient and environmentally friendly hydrogen production process. In the studies carried out to determine the reusability performance of the nanocatalyst in the hydrolysis reaction, it was determined that the catalyst prepared at the end of five cycles was an active catalyst and the conversion was 100% and the catalytic activity was 82%. As a result of catalytic reactions carried out at different temperatures in order to determine the activation parameters, the average TOFinitial was calculated as 106.84 min-1, activation energy 56.38 kJ/mol, enthalpy and entropy values Delta H # = 53.76 kJ/mol, Delta S # = -33.26 J/mol K, respectively. The TOFinitial value obtained in the study draws attention as a very high value compared to the existing TOFinitial values in the literature. These findings reveal that Pd-Cu/PVP naocatalyzer can be considered as a highly efficient and economical alternative for hydrogen production.