Phenyl-substituted amino thiadiazoles as corrosion inhibitors for copper in 0.5 M H2SO4

Yong Ming Tang; Wen Zhong Yang; Xiao Shuang Yin; Ying Liu; Rong Wan; Jin Tang Wang

doi:10.1016/j.matchemphys.2009.04.018

Phenyl-substituted amino thiadiazoles as corrosion inhibitors for copper in 0.5 M H₂SO₄

Yong Ming Tang, Wen Zhong Yang, Xiao Shuang Yin, Ying Liu, Rong Wan, Jin Tang Wang

School of Chemistry and Moleculai Engineering

Nanjing Tech University

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

112 Scopus citations

Abstract

Three thiadiazole derivatives, namely 5-phenyl-2-amino-1,3,4-thiadiazloe (APT), 5-(4-methoxyphenyl)-2-amino-1,3,4-thiadiazloe (AMPT) and 5-(4-nitrophenyl)-2-amino-1,3,4-thiadiazloe (ANPT), have been synthesized as new inhibitors for the copper corrosion in 0.5 M H₂SO₄. The inhibition properties of the inhibitors were studied by means of potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) measurements. The results show that the order of inhibition efficiency is AMPT > APT > ANPT. The values of free energies of adsorption, as calculated from the Langmuir adsorption isotherm, indicate that the thiadiazole compounds adsorb on copper by a physisorption mechanism in 0.5 M H₂SO₄. The correlation between inhibition efficiency and quantum chemical parameters has been investigated by PM3 quantum chemical calculation.

Original language	English
Pages (from-to)	479-483
Number of pages	5
Journal	Materials Chemistry and Physics
Volume	116
Issue number	2-3
DOIs	https://doi.org/10.1016/j.matchemphys.2009.04.018
State	Published - 15 Aug 2009

Keywords

Corrosion inhibitor
EIS
Potentiodynamic polarization
Quantum chemical calculation
Thiadiazole derivatives

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10.1016/j.matchemphys.2009.04.018

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title = "Phenyl-substituted amino thiadiazoles as corrosion inhibitors for copper in 0.5 M H2SO4",

abstract = "Three thiadiazole derivatives, namely 5-phenyl-2-amino-1,3,4-thiadiazloe (APT), 5-(4-methoxyphenyl)-2-amino-1,3,4-thiadiazloe (AMPT) and 5-(4-nitrophenyl)-2-amino-1,3,4-thiadiazloe (ANPT), have been synthesized as new inhibitors for the copper corrosion in 0.5 M H2SO4. The inhibition properties of the inhibitors were studied by means of potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) measurements. The results show that the order of inhibition efficiency is AMPT > APT > ANPT. The values of free energies of adsorption, as calculated from the Langmuir adsorption isotherm, indicate that the thiadiazole compounds adsorb on copper by a physisorption mechanism in 0.5 M H2SO4. The correlation between inhibition efficiency and quantum chemical parameters has been investigated by PM3 quantum chemical calculation.",

keywords = "Corrosion inhibitor, EIS, Potentiodynamic polarization, Quantum chemical calculation, Thiadiazole derivatives",

author = "Tang, {Yong Ming} and Yang, {Wen Zhong} and Yin, {Xiao Shuang} and Ying Liu and Rong Wan and Wang, {Jin Tang}",

year = "2009",

month = aug,

day = "15",

doi = "10.1016/j.matchemphys.2009.04.018",

language = "英语",

volume = "116",

pages = "479--483",

journal = "Materials Chemistry and Physics",

issn = "0254-0584",

publisher = "Elsevier B.V.",

number = "2-3",

}

TY - JOUR

T1 - Phenyl-substituted amino thiadiazoles as corrosion inhibitors for copper in 0.5 M H2SO4

AU - Tang, Yong Ming

AU - Yang, Wen Zhong

AU - Yin, Xiao Shuang

AU - Liu, Ying

AU - Wan, Rong

AU - Wang, Jin Tang

PY - 2009/8/15

Y1 - 2009/8/15

N2 - Three thiadiazole derivatives, namely 5-phenyl-2-amino-1,3,4-thiadiazloe (APT), 5-(4-methoxyphenyl)-2-amino-1,3,4-thiadiazloe (AMPT) and 5-(4-nitrophenyl)-2-amino-1,3,4-thiadiazloe (ANPT), have been synthesized as new inhibitors for the copper corrosion in 0.5 M H2SO4. The inhibition properties of the inhibitors were studied by means of potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) measurements. The results show that the order of inhibition efficiency is AMPT > APT > ANPT. The values of free energies of adsorption, as calculated from the Langmuir adsorption isotherm, indicate that the thiadiazole compounds adsorb on copper by a physisorption mechanism in 0.5 M H2SO4. The correlation between inhibition efficiency and quantum chemical parameters has been investigated by PM3 quantum chemical calculation.

AB - Three thiadiazole derivatives, namely 5-phenyl-2-amino-1,3,4-thiadiazloe (APT), 5-(4-methoxyphenyl)-2-amino-1,3,4-thiadiazloe (AMPT) and 5-(4-nitrophenyl)-2-amino-1,3,4-thiadiazloe (ANPT), have been synthesized as new inhibitors for the copper corrosion in 0.5 M H2SO4. The inhibition properties of the inhibitors were studied by means of potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) measurements. The results show that the order of inhibition efficiency is AMPT > APT > ANPT. The values of free energies of adsorption, as calculated from the Langmuir adsorption isotherm, indicate that the thiadiazole compounds adsorb on copper by a physisorption mechanism in 0.5 M H2SO4. The correlation between inhibition efficiency and quantum chemical parameters has been investigated by PM3 quantum chemical calculation.

KW - Corrosion inhibitor

KW - EIS

KW - Potentiodynamic polarization

KW - Quantum chemical calculation

KW - Thiadiazole derivatives

UR - http://www.scopus.com/inward/record.url?scp=67349217070&partnerID=8YFLogxK

U2 - 10.1016/j.matchemphys.2009.04.018

DO - 10.1016/j.matchemphys.2009.04.018

M3 - 文章

AN - SCOPUS:67349217070

SN - 0254-0584

VL - 116

SP - 479

EP - 483

JO - Materials Chemistry and Physics

JF - Materials Chemistry and Physics

IS - 2-3

ER -

Phenyl-substituted amino thiadiazoles as corrosion inhibitors for copper in 0.5 M H₂SO₄

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Keywords

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