Experimental insights into the adsorption of newly synthesized Gemini ethoxylated surfactant on C-steel in different acidic media accompanied by DFT and MCs studies

Bis ethoxylated cationic surfactant (BOECS) is synthesized. The prepared surfactant's structure configuration was verified through a variety of spectral and physicochemical techniques, including FT-IR, MS,(HNMR)-H-1, and surface activity evaluations. BOECS applications as a C-steel corrosion inhibitor in 1.0 N HCl and 1.0 N H2SO4 and sulfate reducing bacteria (SRB) mitigations have been investigated thoroughly. Physical properties of the BOECS indicate its potential adsorption affinity at the air/water interface. The electrical conductivity determines the CMC value in accordance with the surface tension value. Electrochemical kinetic parameters indicate the BOECS is sorted as a mixed-type inhibitor and has an inhibition efficacy of 91.22 % and 81.26% for HCl and H2SO4, respectively. Active centers of BOECS structure enhance its adsorption at the electrolyte/C-steel. Calculated adsorption energy change ( increment G(ads)) and theoretical adsorption energy (E-ads) values suggest strong and spontaneous BOECS adsorption. The cytotoxic performance of the synthesized BOECS exhibited a potent inhibitory potential against the SRB. The outcomes of this research exhibit that the BOECS can lower SRB growth from 10(6) to 10(2) cell/mL.

Automated summary

The synthesis and structure configuration of bis ethoxylated cationic surfactant (BOECS) were verified using a variety of techniques. BOECS exhibited excellent corrosion resistance and inhibition of sulfate reducing bacteria growth. The adsorption affinity of BOECS at the air/water interface and its critical micelle concentration (CMC) were determined by its physical properties. The electrochemical kinetic parameters showed that BOECS is a mixed-type inhibitor with high inhibition efficacy against HCl and H2SO4. Calculated adsorption energy change (ΔGads) and theoretical adsorption energy (Eads) values indicated strong and spontaneous adsorption of BOECS. The synthesized BOECS also demonstrated potent inhibitory potential against sulfate reducing bacteria, significantly reducing their growth.