A thermodynamical, electrochemical and surface investigation of Bis (indolyl) methanes as Green corrosion inhibitors for mild steel in 1 M hydrochloric acid solution

Chandrabhan Verma; Pooja Singh; M. A. Quraishi

doi:10.1016/j.jaubas.2015.04.003

A thermodynamical, electrochemical and surface investigation of Bis (indolyl) methanes as Green corrosion inhibitors for mild steel in 1 M hydrochloric acid solution

Chandrabhan Verma, Pooja Singh, M. A. Quraishi^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

44 Scopus citations

Abstract

The influence of three Bis (indolyl) methanes (BIMs) namely, 3,3′-((4-nitrophenyl) methylene) bis (1H-indole) (BIM-1), 3,3′-(phenyl methylene) bis (1H-indole) (BIM-2) and 4-((1H-indol-2-yl)(1H-indol-3-yl) methyl) phenol (BIM-3) on the mild steel corrosion in 1 M HCl was studied by weight loss, electrochemical, scanning electron microscopy (SEM), and dispersive X-ray spectroscopy (EDX) methods. Results showed that BIM-3 shows maximum inhibition efficiency of 98.06% at 200 mg L⁻¹ concentration. Polarization study revealed that the BIMs act as mixed type inhibitors. Adsorption of BIMs on the mild steel surface obeyed the Langmuir adsorption isotherm. The weight loss and electrochemical results were well supported by SEM and EDX studies.

Original language	English
Pages (from-to)	24-30
Number of pages	7
Journal	Journal of the Association of Arab Universities for Basic and Applied Sciences
Volume	21
DOIs	https://doi.org/10.1016/j.jaubas.2015.04.003
State	Published - 1 Oct 2016
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2015 The Authors

Keywords

Corrosion
EIS
Mild steel
SEM/EDX
Tafel polarization

ASJC Scopus subject areas

General Chemistry
General Mathematics
General Materials Science
General Biochemistry, Genetics and Molecular Biology
General Environmental Science
General Agricultural and Biological Sciences
General Energy

Access to Document

10.1016/j.jaubas.2015.04.003

Cite this

@article{7760af8ea014412d977e40722687512f,

title = "A thermodynamical, electrochemical and surface investigation of Bis (indolyl) methanes as Green corrosion inhibitors for mild steel in 1 M hydrochloric acid solution",

abstract = "The influence of three Bis (indolyl) methanes (BIMs) namely, 3,3′-((4-nitrophenyl) methylene) bis (1H-indole) (BIM-1), 3,3′-(phenyl methylene) bis (1H-indole) (BIM-2) and 4-((1H-indol-2-yl)(1H-indol-3-yl) methyl) phenol (BIM-3) on the mild steel corrosion in 1 M HCl was studied by weight loss, electrochemical, scanning electron microscopy (SEM), and dispersive X-ray spectroscopy (EDX) methods. Results showed that BIM-3 shows maximum inhibition efficiency of 98.06\% at 200 mg L−1 concentration. Polarization study revealed that the BIMs act as mixed type inhibitors. Adsorption of BIMs on the mild steel surface obeyed the Langmuir adsorption isotherm. The weight loss and electrochemical results were well supported by SEM and EDX studies.",

keywords = "Corrosion, EIS, Mild steel, SEM/EDX, Tafel polarization",

author = "Chandrabhan Verma and Pooja Singh and Quraishi, \{M. A.\}",

note = "Publisher Copyright: {\textcopyright} 2015 The Authors",

year = "2016",

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day = "1",

doi = "10.1016/j.jaubas.2015.04.003",

language = "English",

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A thermodynamical, electrochemical and surface investigation of Bis (indolyl) methanes as Green corrosion inhibitors for mild steel in 1 M hydrochloric acid solution. / Verma, Chandrabhan; Singh, Pooja; Quraishi, M. A.
In: Journal of the Association of Arab Universities for Basic and Applied Sciences, Vol. 21, 01.10.2016, p. 24-30.

Research output: Contribution to journal › Article › peer-review

TY - JOUR

T1 - A thermodynamical, electrochemical and surface investigation of Bis (indolyl) methanes as Green corrosion inhibitors for mild steel in 1 M hydrochloric acid solution

AU - Verma, Chandrabhan

AU - Singh, Pooja

AU - Quraishi, M. A.

PY - 2016/10/1

Y1 - 2016/10/1

N2 - The influence of three Bis (indolyl) methanes (BIMs) namely, 3,3′-((4-nitrophenyl) methylene) bis (1H-indole) (BIM-1), 3,3′-(phenyl methylene) bis (1H-indole) (BIM-2) and 4-((1H-indol-2-yl)(1H-indol-3-yl) methyl) phenol (BIM-3) on the mild steel corrosion in 1 M HCl was studied by weight loss, electrochemical, scanning electron microscopy (SEM), and dispersive X-ray spectroscopy (EDX) methods. Results showed that BIM-3 shows maximum inhibition efficiency of 98.06% at 200 mg L−1 concentration. Polarization study revealed that the BIMs act as mixed type inhibitors. Adsorption of BIMs on the mild steel surface obeyed the Langmuir adsorption isotherm. The weight loss and electrochemical results were well supported by SEM and EDX studies.

AB - The influence of three Bis (indolyl) methanes (BIMs) namely, 3,3′-((4-nitrophenyl) methylene) bis (1H-indole) (BIM-1), 3,3′-(phenyl methylene) bis (1H-indole) (BIM-2) and 4-((1H-indol-2-yl)(1H-indol-3-yl) methyl) phenol (BIM-3) on the mild steel corrosion in 1 M HCl was studied by weight loss, electrochemical, scanning electron microscopy (SEM), and dispersive X-ray spectroscopy (EDX) methods. Results showed that BIM-3 shows maximum inhibition efficiency of 98.06% at 200 mg L−1 concentration. Polarization study revealed that the BIMs act as mixed type inhibitors. Adsorption of BIMs on the mild steel surface obeyed the Langmuir adsorption isotherm. The weight loss and electrochemical results were well supported by SEM and EDX studies.

KW - Corrosion

KW - EIS

KW - Mild steel

KW - SEM/EDX

KW - Tafel polarization

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DO - 10.1016/j.jaubas.2015.04.003

M3 - Article

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