TY - JOUR
T1 - Electrochemical and physicochemical studies for adsorption of Bovine serum albumin for corrosion mitigation of zinc
AU - Pais, Mikitha
AU - Rao, Padmalatha
N1 - Funding Information:
Ms.Mikitha Pais is thankful to MAHE for the fellowship. Ms. Mikitha acknowledges facilities provided by the Department of Chemistry, MIT MAHE, Department of Chemical Engineering, MIT MAHE, Department of Atomic and Molecular Physics MAHE, Central Instrumentation Facilities, MAHE. This work is supported and funded by MAHE (MAHE/DREG/Ph.D./IMF/2019).
Funding Information:
Ms.Mikitha Pais is thankful to MAHE for the fellowship. Ms. Mikitha acknowledges facilities provided by the Department of Chemistry, MIT MAHE, Department of Chemical Engineering, MIT MAHE, Department of Atomic and Molecular Physics MAHE, Central Instrumentation Facilities, MAHE. This work is supported and funded by MAHE (MAHE/DREG/Ph.D./IMF/2019).
Publisher Copyright:
© 2022 Elsevier B.V.
PY - 2022/5/1
Y1 - 2022/5/1
N2 - Work deliberated here intended to study protection of sulfamic acid (NH2SO3H) induced corrosion of zinc using a biopolymer Bovine serum albumin (BSA). The efficacy of BSA was studied by potentiodynamic polarization measurements (PDP) and electrochemical impedance spectroscopy (EIS). Experimental parameters like concentration of NH2SO3H (0.1 M and 0.25 M), BSA (0.05–0.25 gL-1) and temperature (303 K–323 K) were varied to achieve maximum inhibition efficiency. Various adsorption isotherm models were tried and tested to understand the mode of adsorption. Adsorption of BSA was reaffirmed by surface (SEM, EDX, AFM) and spectroscopic (UV–Visible, AAS, FT-IR) studies. The inhibition efficiency increased with increased temperature, inhibitor concentration and acid concentration. A maximum of 89.1% inhibition efficiency was achieved at the concentration of 0.25 gL-1 BSA at 323 K in 0.25 M NH2SO3H. Thermodynamic calculations revealed the possibility of both physical and chemical adsorption of BSA on zinc. A suitable mechanism was predicted for the corrosion and inhibition process. BSA emerged as an excellent green inhibitor.
AB - Work deliberated here intended to study protection of sulfamic acid (NH2SO3H) induced corrosion of zinc using a biopolymer Bovine serum albumin (BSA). The efficacy of BSA was studied by potentiodynamic polarization measurements (PDP) and electrochemical impedance spectroscopy (EIS). Experimental parameters like concentration of NH2SO3H (0.1 M and 0.25 M), BSA (0.05–0.25 gL-1) and temperature (303 K–323 K) were varied to achieve maximum inhibition efficiency. Various adsorption isotherm models were tried and tested to understand the mode of adsorption. Adsorption of BSA was reaffirmed by surface (SEM, EDX, AFM) and spectroscopic (UV–Visible, AAS, FT-IR) studies. The inhibition efficiency increased with increased temperature, inhibitor concentration and acid concentration. A maximum of 89.1% inhibition efficiency was achieved at the concentration of 0.25 gL-1 BSA at 323 K in 0.25 M NH2SO3H. Thermodynamic calculations revealed the possibility of both physical and chemical adsorption of BSA on zinc. A suitable mechanism was predicted for the corrosion and inhibition process. BSA emerged as an excellent green inhibitor.
UR - https://www.scopus.com/pages/publications/85126895570
UR - https://www.scopus.com/pages/publications/85126895570#tab=citedBy
U2 - 10.1016/j.matchemphys.2022.126034
DO - 10.1016/j.matchemphys.2022.126034
M3 - Article
AN - SCOPUS:85126895570
SN - 0254-0584
VL - 283
JO - Materials Chemistry and Physics
JF - Materials Chemistry and Physics
M1 - 126034
ER -