Evaluation Of Piper Sarmentosum (Ps) Leaves Extracts As Green Inhibitor For Corrosion Of Mild Steel In 0.5 M Hcl Solution

Evaluation Of Piper Sarmentosum (Ps) Leaves Extracts As Green Inhibitor For Corrosion Of Mild Steel In 0.5 M Hcl Solution

This study focused on the evaluation of Piper sarmentosum (PS) leaves extracts isolated using ethanol (PSE), water (PSW), ethyl acetate (PSA) and n-hexane (PSN) as corrosion inhibitors for mild steel in 0.5 M HCl solution. In this study, PSE and PSW contained the highest content of TPC, TFC and anti...

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Main Author: Rozuli, Nurul Adilla
Format: Thesis
Language:English
Published: 2019
Subjects:
TP1-1185 Chemical technology
Online Access:http://eprints.usm.my/49131/1/Nurul%20Adilla%20Binti%20Rozuli%20%28MSc.%20Thesis%29%20cut.pdf
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spelling my-usm-ep.491312021-05-10T08:36:17Z Evaluation Of Piper Sarmentosum (Ps) Leaves Extracts As Green Inhibitor For Corrosion Of Mild Steel In 0.5 M Hcl Solution 2019-08 Rozuli, Nurul Adilla TP1-1185 Chemical technology This study focused on the evaluation of Piper sarmentosum (PS) leaves extracts isolated using ethanol (PSE), water (PSW), ethyl acetate (PSA) and n-hexane (PSN) as corrosion inhibitors for mild steel in 0.5 M HCl solution. In this study, PSE and PSW contained the highest content of TPC, TFC and antioxidants as compared to other extracts. Electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (PD) and electrochemical noise measurement (ENM) were employed to determine the corrosion inhibitive properties of the extracts. Based on EIS data, it was revealed that PSE and PSW provided the highest inhibition efficiency of 93.24% and 93.00%, respectively at 1000 ppm. Additionally, PD analysis demonstrated that PSE and PSW act as a mixed type corrosion inhibitor, predominantly mitigating the anodic reaction. Moreover, PSE and PSW adsorption mechanism obeyed Langmuir isotherm model illustrating a spontaneous semi-physisorption and/or semi-chemisorption adsorption process. SEM analysis showed the improvement of the surface morphology of mild plates in the presence of both inhibitors. The present study also investigated the coating resistance characteristics of hybrid sol-gel matrices prepared using APTES and TEOS deposited on mild steel adopting the dip-coating technique. Mild steel surfaces treated with inhibitors doped hybrid sol-gel coatings were found to be more hydrophobic compared to bare mild steel surface. 2019-08 Thesis http://eprints.usm.my/49131/ http://eprints.usm.my/49131/1/Nurul%20Adilla%20Binti%20Rozuli%20%28MSc.%20Thesis%29%20cut.pdf application/pdf en public masters Universiti Sains Malaysia Pusat Pengajian Kejuruteraan Kimia
institution Universiti Sains Malaysia
collection USM Institutional Repository
language English
topic TP1-1185 Chemical technology
spellingShingle TP1-1185 Chemical technology
Rozuli, Nurul Adilla
Evaluation Of Piper Sarmentosum (Ps) Leaves Extracts As Green Inhibitor For Corrosion Of Mild Steel In 0.5 M Hcl Solution
description This study focused on the evaluation of Piper sarmentosum (PS) leaves extracts isolated using ethanol (PSE), water (PSW), ethyl acetate (PSA) and n-hexane (PSN) as corrosion inhibitors for mild steel in 0.5 M HCl solution. In this study, PSE and PSW contained the highest content of TPC, TFC and antioxidants as compared to other extracts. Electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (PD) and electrochemical noise measurement (ENM) were employed to determine the corrosion inhibitive properties of the extracts. Based on EIS data, it was revealed that PSE and PSW provided the highest inhibition efficiency of 93.24% and 93.00%, respectively at 1000 ppm. Additionally, PD analysis demonstrated that PSE and PSW act as a mixed type corrosion inhibitor, predominantly mitigating the anodic reaction. Moreover, PSE and PSW adsorption mechanism obeyed Langmuir isotherm model illustrating a spontaneous semi-physisorption and/or semi-chemisorption adsorption process. SEM analysis showed the improvement of the surface morphology of mild plates in the presence of both inhibitors. The present study also investigated the coating resistance characteristics of hybrid sol-gel matrices prepared using APTES and TEOS deposited on mild steel adopting the dip-coating technique. Mild steel surfaces treated with inhibitors doped hybrid sol-gel coatings were found to be more hydrophobic compared to bare mild steel surface.
format Thesis
qualification_level Master's degree
author Rozuli, Nurul Adilla
author_facet Rozuli, Nurul Adilla
author_sort Rozuli, Nurul Adilla
title Evaluation Of Piper Sarmentosum (Ps) Leaves Extracts As Green Inhibitor For Corrosion Of Mild Steel In 0.5 M Hcl Solution
title_short Evaluation Of Piper Sarmentosum (Ps) Leaves Extracts As Green Inhibitor For Corrosion Of Mild Steel In 0.5 M Hcl Solution
title_full Evaluation Of Piper Sarmentosum (Ps) Leaves Extracts As Green Inhibitor For Corrosion Of Mild Steel In 0.5 M Hcl Solution
title_fullStr Evaluation Of Piper Sarmentosum (Ps) Leaves Extracts As Green Inhibitor For Corrosion Of Mild Steel In 0.5 M Hcl Solution
title_full_unstemmed Evaluation Of Piper Sarmentosum (Ps) Leaves Extracts As Green Inhibitor For Corrosion Of Mild Steel In 0.5 M Hcl Solution
title_sort evaluation of piper sarmentosum (ps) leaves extracts as green inhibitor for corrosion of mild steel in 0.5 m hcl solution
granting_institution Universiti Sains Malaysia
granting_department Pusat Pengajian Kejuruteraan Kimia
publishDate 2019
url http://eprints.usm.my/49131/1/Nurul%20Adilla%20Binti%20Rozuli%20%28MSc.%20Thesis%29%20cut.pdf
_version_ 1747821982698700800

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