Biomass-mediated synthesis of silver nanoparticles composite and application as green corrosion inhibitor in oilfield acidic cleaning fluid
By Ituen, Ekemini; Singh, Ambrish; Yuanhua, Lin; Akaranta, Onyewuchi
Published in Cleaner Engineering and Technology
2021
Abstract
Aqueous extract of red onion peels mediates the synthesis of silver nanoparticles composite (AqAgNPs). The AqAgNPs were characterized using X-ray diffraction, microscopic and spectroscopic techniques and evaluated as anticorrosion additive for pipeline (X80) steel. Spherical, stable, crystalline, monodisperse and non-agglomerated particles of 50 nm average size were obtained. In laboratory simulated acidic cleaning solution (1 M HCl), AqAgNPs exhibits impressive anticorrosion effect on X80 steel surface even at small concentrations (25% v/v) at 30–60 °C as determined by weight loss and electrochemical techniques. AqAgNPs is thermally and biochemically stable and still affords 86% efficiency at 60 °C even after 120 days of storage. FTIR and EDS studies reveal that AqAgNPs species interact with steel surface by adsorption using mainly by O and N sites. Microscopic (SEM and AFM) examination of the steel surface reveals sufficient protection and reduction in pitting by 70.5%. Instead of being discarded as waste, onion peels could be processed into oilfield chemicals as demonstrated in this study.