The anticorrosion activity of biferrocenyl Schiff bases on AA2219-T6 in acidic medium were studied using Tafel polarization, electrochemical impedance spectroscopy, weight loss analysis, FT-IR spectroscopy and scanning electron microscopic technique.

There are only scarce reports on using lanthanum cerates in water electrocatalysis. The electrocatalytic facility in water-splitting is manifested in two of the electrochemical output parameters: the lower onset potential and the higher peak current response. The robustness of the envisioned scheme of using lanthanum cerates perovskite (LaCeO 3 ; LCO) in combination with doped compositions provides better electrochemical results for water-splitting when comparing to the use of costly metallic or alloy nanomaterials. Lanthanum cerates were researched for the B-site doping effect on the resulting chemistry for the water electrocatalysis. Series of LaCe 1-x M x O 3+δ (LCMO; M = Fe 3+ , Cr 3+ , Cu 2+ , Zn 2+ ; x = 0.02─0.10) nanopowders were synthesized and tested electrochemically by using cyclic voltammetry and impedance analysis for water-splitting in alkaline methanol at ambient conditions. The oxygen evolution reaction (OER) was evidenced by the multifold water-splitting current with perovskite powders coated on to the glassy carbon (GC) electrode. An obvious correspondence was detected between the electrocatalytic activity and the morphological, structural properties of perovskite ceramic powders.

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In this study, the binding tendency of bisnitrophenoxy compounds (BN) having different methylene (-CH 2 -) n spacer groups (n ¼ 8-11) with fish sperm double stranded deoxyribonucleic acid (dsDNA) was explored. Cyclic voltammetry (CV) was used to evaluate various kinetic and binding parameters (K s,h , D o , K b and binding site sizes). Performed electrochemical studies designated strong contact of these symmetric molecules with dsDNA in threading intercalation mode of binding. The number (n) of methylene spacer group in the molecular structure of bisnitrophenoxy compounds, e.g., BN-8 (1-nitro-4-(8-(4-nitrophenoxy)octyloxy)benzene, was observed to have a strong influence on their binding affinity. Decreased peak current values and positively shifted peak potentials recorded via cyclic voltammetry clearly depicted that bisnitrophenoxy compounds can intercalate with dsDNA. Results demonstrated the following order of binding constants; K b (M À1 ): BN-8 (2.32 Â 10 4 ) < BN-9 (5.73 Â 10 4 ) < BN-10 (8.97 Â 10 4 ) < ). The order of increasing binding sites from BN-8 (0.13) to , revealed the maximum threading intercalation strength by bisnitrophenoxy compound having the longest methylene spacer (n ¼ 11). Thermodynamic studies augmented the strong binding of BN-11 with dsDNA as compared to BN-8 because of the long-chain, -CH 2 -spacer in its structure. The spontaneity of dsDNA-binding was revealed by the negative ΔG values for interaction of all the compounds. Moreover, binding parameters from thermodynamic and kinetic studies also corresponded to the threading intercalation mode of interaction, which itself points to the potency of the envisioned drug-like molecules.