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Investigation of Laurus Tamala leaves extract as an environmentally acceptable corrosion inhibitor for soft steel in 1M HCl: Electrochemical, DFT, and surface characterization techniques

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Title Investigation of Laurus Tamala leaves extract as an environmentally acceptable corrosion inhibitor for soft steel in 1M HCl: Electrochemical, DFT, and surface characterization techniques
 
Creator Minagalavar, Ragini L
Rajappa, S K
Rathod, Manohar R
Sajjan, Ashok M
 
Subject Laurus Tamala leaves extract
Soft steel
Corrosion inhibitor
Tafel plots
 
Description 492-505
Laurus Tamala leaves extract (LTLE) has been employed as a soft steel corrosion inhibitor in a 1M Hydrochloric acid
media. Chemical (weight loss) and electrochemical investigations were carried out to assess the corrosion rate and
percentage inhibition efficiency of the extract. The electrochemical polarization results have demonstrated that plant leaves
extract functions as a mixed type inhibitor. The stability of the inhibitor is tested at elevated temperatures by weight loss
method. The corrosion inhibition mechanism is interpreted through adsorption mechanism, and the LTLE components has
obeyed the Langmuir adsorption isotherm for soft steel. The interaction of the components of the extract is assessed through
FT-IR technique. The surface morphology, roughness and hydrophobicity in presence and absence of the extract have been
characterized through SEM, AFM and water contact angle techniques respectively. The highest inhibitory efficiency is
96.21% for 24 h as recorded by weight loss method. Additionally, the DFT computations has revealed the inhibitor’s
adsorption through electron donor-acceptor interactions.
 
Date 2023-07-11T05:30:46Z
2023-07-11T05:30:46Z
2023-07
 
Type Article
 
Identifier 0975-0991 (Online); 0971-457X (Print)
http://nopr.niscpr.res.in/handle/123456789/62283
https://doi.org/10.56042/ijct.v30i4.71465
 
Language en
 
Publisher NIScPR-CSIR,India
 
Source IJCT Vol.30(4) [July 2023]