Tổng hợp phức chất lanthan benzoat và nghiên cứu khả năng ức chế ăn mòn của chúng trên nền kẽm

The widespread industrial application of zinc and its alloys necessitates effective protection against corrosion, particularly in aggressive environments such as those containing chlorides. Conventional corrosion inhibitors often pose environmental and health risks, driving the urgent need for more sustainable alternatives. Rare-earth element complexes have emerged as promising candidates due to their excellent inhibitory properties and lower toxicity. This study addresses this critical challenge by focusing on the synthesis of lanthanum benzoate complex and a comprehensive investigation into its corrosion inhibition ability on zinc substrate. The research aims to explore the potential of LaBz as an efficient and environmentally friendly protective agent, contributing to the development of advanced anti-corrosion solutions.

Researchers and academics in materials science, electrochemistry, corrosion engineering, and inorganic chemistry, as well as industry professionals involved in developing protective coatings and anti-corrosion solutions for metallic materials.

This academic paper presents a detailed study on the synthesis and characterization of the lanthanum benzoate (LaBz) complex and evaluates its efficacy as a corrosion inhibitor for zinc substrates. The methodology involved synthesizing the LaBz complex, followed by thorough structural and morphological characterization using Fourier-transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA). Results from characterization confirmed the successful formation of a uniform LaBz complex with an average particle size of approximately 30 nanometers. The corrosion inhibition performance was assessed using electrochemical techniques, specifically potentiodynamic polarization and electrochemical impedance spectroscopy, in a 0.1M NaCl solution. The findings indicate that the LaBz complex effectively inhibited zinc corrosion, achieving an impressive efficiency of 68.53% after a 2-hour immersion period. Further analysis revealed that LaBz primarily functions as an anodic inhibitor. Significantly, the study highlights that both the LaBz complex and released Zn2+ ions collaboratively contribute to forming a robust protective layer on the zinc surface, thereby impeding the corrosion process. This research not only introduces a viable and efficient rare earth complex as a corrosion inhibitor but also provides crucial insights for its application in developing advanced, environmentally benign protective coatings for various zinc-based materials.