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Electrochemical Impedance Spectroscopy (EIS) is a widely used technique for characterizing the electrode–electrolyte interface. EIS analysis can be very complex and tedious. In this work, a fitting algorithm written in C is implemented on OriginPro software to avoid the data import/export operation and speed up the analysis. An automated fitting procedure that assigns the initial parameters is implemented for the simplest equivalent circuit. In addition, the possibility of using a custom error function is explored, with results comparable to that of reference software. The developed algorithm is tested on two different case studies.

How nice would it be to obtain the size distribution of a nanoparticle dispersion fast and without electron microscope measurements? UV-Vis-NIR spectrophotometry offers a very rapid solution; however, the spectra interpretation can be very challenging and needs to take into account the size distribution of the nanoparticles and agglomeration. This work suggests a Monte Carlo method for rapid fitting UV-Vis-NIR spectra using one or two size distributions starting from a dataset of precomputed spectra based on Mie theory. The proposed algorithm is tested on copper nanoparticles produced with Pulsed Laser Ablation in Liquid and on gold nanoparticles from the literature. The fitted distribution results are comparable with Transmission Electron Microscope results and, in some cases, reflect the presence of agglomeration.

Molybdenum carbides have emerged as an optimal alternative to noble expensive materials for hydrogen evolution reaction (HER). Most reported synthesis methods involve prolonged operations at high temperatures in reactive gases environments. In this study, we introduce nanosecond Pulsed Laser Ablation in Liquid (PLAL) as a viable and environmental friendly approach for synthesizing molybdenum carbide by ablating a molybdenum (Mo) target in ethanol. Structural and compositional characterizations on the nanoparticles (NPs) reveal no oxidation and the absence of a graphitic shell, confirming the formation of hexagonal Mo 2 C and cubic MoC. The NPs loaded on nickel foam exhibit significant HER activity in an aqueous 1 M KOH electrolyte, with a potential of 136 mV vs. RHE at 10 mA cm − 2 and 240 mV at 50 mA cm − 2 . The calculated mass activity (0.05 A/cm 2 ) highlights the high intrinsic activity of this material compared to conventional and non-green synthesis methods reported in literature.