Thiosemicarbazone derivatives as corrosion inhibitors for mild steel in 15 % HCl
The first time comparative evaluation of the anti-corrosion performance of 2-benzylidenehydrazinecarbothioamide (BHC), 2-(4-(dimethylamino)benzylidene)hydrazinecarbothioamide (DMBHC), 2-(4-(diethylamino)benzylidene)hydrazinecarbothioamide (DEBHC), and its reactants against mild steel (MS) in 15 % HC...
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Elsevier
2025-07-01
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| author | Sachin Dua Nishtha Arora Varsha Choudhary B.G. Prakashaiah Rakesh C. Saxena Mansi Mani Singh Tuhin Suvra Khan G.D. Thakre Sudip K. Ganguly T. Senthilkumar |
| author_facet | Sachin Dua Nishtha Arora Varsha Choudhary B.G. Prakashaiah Rakesh C. Saxena Mansi Mani Singh Tuhin Suvra Khan G.D. Thakre Sudip K. Ganguly T. Senthilkumar |
| author_sort | Sachin Dua |
| collection | DOAJ |
| description | The first time comparative evaluation of the anti-corrosion performance of 2-benzylidenehydrazinecarbothioamide (BHC), 2-(4-(dimethylamino)benzylidene)hydrazinecarbothioamide (DMBHC), 2-(4-(diethylamino)benzylidene)hydrazinecarbothioamide (DEBHC), and its reactants against mild steel (MS) in 15 % HCl using electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (PDP), temperature (303.15–333.15 K) based gravimetric analysis, SEM, 3D-optical profilometer and density functional theory (DFT) were investigated. Furthermore, electrochemical analyses based on concentration variation and immersion were carried out in this study. The list of reactants considered for investigation comprises benzaldehyde (Bz), 4-dimethylaminobenzaldehyde (DMBz), 4-diethylaminobenzaldehyde (DEBz), and thiosemicarbazide (TSC). The electrochemical analysis demonstrated that with an optimal concentration of 4 mM and a temperature of 303.15 K, the corrosion inhibition efficiencies of BHC, DMBHC, and DEBHC were 98.70 %, 95.01 %, and 93.39 %, respectively. PDP studies confirmed that all the synthesized molecules acted as mixed-type inhibitors, covering both anodic and cathodic active sites on the MS surface, thus preventing corrosion. Meanwhile, gravimetric studies at 303.15 and 333.15 K revealed inhibition efficiencies of 91.2 and 68.89 % for BHC, 90.51 and 78.55 % for DMBHC, 95.6 and 86.93 % for DEBHC with 4 mM concentration. The adsorption of the inhibitor followed the Langmuir adsorption isotherm, and the thermodynamic parameters (Kads, ΔGads, ΔHads, and ΔSads) were evaluated. The results indicated that the inhibitor's adsorption occurred through a combination of chemisorption and physisorption. |
| format | Article |
| id | doaj-art-85b856abc75441629f45b74e9a4cb896 |
| institution | OA Journals |
| issn | 2949-8228 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Elsevier |
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| series | Next Materials |
| spelling | doaj-art-85b856abc75441629f45b74e9a4cb8962025-08-20T02:13:14ZengElsevierNext Materials2949-82282025-07-01810068610.1016/j.nxmate.2025.100686Thiosemicarbazone derivatives as corrosion inhibitors for mild steel in 15 % HClSachin Dua0Nishtha Arora1Varsha Choudhary2B.G. Prakashaiah3Rakesh C. Saxena4Mansi Mani Singh5Tuhin Suvra Khan6G.D. Thakre7Sudip K. Ganguly8T. Senthilkumar9Polymeric Materials Area, Chemical and Material Sciences Division, CSIR-Indian Institute of Petroleum, Dehradun 248005, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, IndiaPolymeric Materials Area, Chemical and Material Sciences Division, CSIR-Indian Institute of Petroleum, Dehradun 248005, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, IndiaCorrosion Area, Chemical and Material Sciences Division, CSIR-Indian Institute of Petroleum, Dehradun 248005, IndiaAcademy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India; Corrosion Area, Chemical and Material Sciences Division, CSIR-Indian Institute of Petroleum, Dehradun 248005, India; Corresponding author at: Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India; Corrosion Area, Chemical and Material Sciences Division, CSIR-Indian Institute of Petroleum, Dehradun 248005, IndiaClimate changes and Data Science Area, Director’s Division, CSIR-Indian Institute of Petroleum, Dehradun 248005, IndiaAcademy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India; Climate changes and Data Science Area, Director’s Division, CSIR-Indian Institute of Petroleum, Dehradun 248005, IndiaAcademy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India; Advanced Tribology Research Centre, CSIR-Indian Institute of Petroleum, Dehradun 248005, IndiaAcademy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India; Sweetening Area, Chemical and Material Sciences Division, CSIR-Indian Institute of Petroleum, Dehradun 248005, IndiaPolymeric Materials Area, Chemical and Material Sciences Division, CSIR-Indian Institute of Petroleum, Dehradun 248005, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India; Corresponding author at: Polymeric Materials Area, Chemical and Material Sciences Division, CSIR-Indian Institute of Petroleum, Dehradun 248005, India.The first time comparative evaluation of the anti-corrosion performance of 2-benzylidenehydrazinecarbothioamide (BHC), 2-(4-(dimethylamino)benzylidene)hydrazinecarbothioamide (DMBHC), 2-(4-(diethylamino)benzylidene)hydrazinecarbothioamide (DEBHC), and its reactants against mild steel (MS) in 15 % HCl using electrochemical impedance spectroscopy (EIS), potentiodynamic polarization (PDP), temperature (303.15–333.15 K) based gravimetric analysis, SEM, 3D-optical profilometer and density functional theory (DFT) were investigated. Furthermore, electrochemical analyses based on concentration variation and immersion were carried out in this study. The list of reactants considered for investigation comprises benzaldehyde (Bz), 4-dimethylaminobenzaldehyde (DMBz), 4-diethylaminobenzaldehyde (DEBz), and thiosemicarbazide (TSC). The electrochemical analysis demonstrated that with an optimal concentration of 4 mM and a temperature of 303.15 K, the corrosion inhibition efficiencies of BHC, DMBHC, and DEBHC were 98.70 %, 95.01 %, and 93.39 %, respectively. PDP studies confirmed that all the synthesized molecules acted as mixed-type inhibitors, covering both anodic and cathodic active sites on the MS surface, thus preventing corrosion. Meanwhile, gravimetric studies at 303.15 and 333.15 K revealed inhibition efficiencies of 91.2 and 68.89 % for BHC, 90.51 and 78.55 % for DMBHC, 95.6 and 86.93 % for DEBHC with 4 mM concentration. The adsorption of the inhibitor followed the Langmuir adsorption isotherm, and the thermodynamic parameters (Kads, ΔGads, ΔHads, and ΔSads) were evaluated. The results indicated that the inhibitor's adsorption occurred through a combination of chemisorption and physisorption.http://www.sciencedirect.com/science/article/pii/S2949822825002047Corrosion inhibitorsThiosemicarbazone derivativesElectrochemical analysisLangmuir adsorptionGravimetric analysisDensity functional theory |
| spellingShingle | Sachin Dua Nishtha Arora Varsha Choudhary B.G. Prakashaiah Rakesh C. Saxena Mansi Mani Singh Tuhin Suvra Khan G.D. Thakre Sudip K. Ganguly T. Senthilkumar Thiosemicarbazone derivatives as corrosion inhibitors for mild steel in 15 % HCl Next Materials Corrosion inhibitors Thiosemicarbazone derivatives Electrochemical analysis Langmuir adsorption Gravimetric analysis Density functional theory |
| title | Thiosemicarbazone derivatives as corrosion inhibitors for mild steel in 15 % HCl |
| title_full | Thiosemicarbazone derivatives as corrosion inhibitors for mild steel in 15 % HCl |
| title_fullStr | Thiosemicarbazone derivatives as corrosion inhibitors for mild steel in 15 % HCl |
| title_full_unstemmed | Thiosemicarbazone derivatives as corrosion inhibitors for mild steel in 15 % HCl |
| title_short | Thiosemicarbazone derivatives as corrosion inhibitors for mild steel in 15 % HCl |
| title_sort | thiosemicarbazone derivatives as corrosion inhibitors for mild steel in 15 hcl |
| topic | Corrosion inhibitors Thiosemicarbazone derivatives Electrochemical analysis Langmuir adsorption Gravimetric analysis Density functional theory |
| url | http://www.sciencedirect.com/science/article/pii/S2949822825002047 |
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