Synthesis and Characterization of Polypyrrole Film Doped with Both Molybdate and Salicylate and Its Application in the Corrosion Protection for Low Carbon Steel.

Autor:	Trung VQ; Faculty of Chemistry, Hanoi National University of Education, 136 Xuan Thuy, Cau Giay District, Hanoi 100000, Vietnam., Hung HM; Faculty of General Education, Hanoi University of Mining and Geology, Duc Thang Ward, BacTu Liem District, Hanoi 100000, Vietnam., Van Khoe L; Faculty of Natural Sciences, Hong Duc University, 565 Quang Trung, Dong Ve Ward, Thanh Hoa City 100000, Vietnam., Duc LM; Branch of National Institute of Occupational Safety and Health & Environmental Protection in Central of Vietnam, 178 Trieu Nu Vuong, Hai Chau, Da Nang 540000, Vietnam., Bich Viet NT; Faculty of Chemistry, Hanoi National University of Education, 136 Xuan Thuy, Cau Giay District, Hanoi 100000, Vietnam., Linh DK; Faculty of Chemistry, Hanoi National University of Education, 136 Xuan Thuy, Cau Giay District, Hanoi 100000, Vietnam., Huong VT; Faculty of Chemistry, Hanoi National University of Education, 136 Xuan Thuy, Cau Giay District, Hanoi 100000, Vietnam., Dat ND; Faculty of Chemistry, Hanoi National University of Education, 136 Xuan Thuy, Cau Giay District, Hanoi 100000, Vietnam., Yen Oanh DT; Publishing House for Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 100000, Vietnam., Luong NX; Faculty of Natural Sciences, Hong Duc University, 565 Quang Trung, Dong Ve Ward, Thanh Hoa City 100000, Vietnam., Chinh NT; Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 100000, Vietnam.; Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 100000, Vietnam., Thai H; Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 100000, Vietnam.; Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi 100000, Vietnam., Tuyet Lan HT; Faculty of Basic Sciences, University of Transport and Communications, No 3 Cau Giay Street, Hanoi 100000, Vietnam., Van CL; Institute of Physics, University of Zielona Góra, Prof. Szafrana 4a, Zielona Góra 65-516, Poland., Ţălu Ş; The Directorate of Research, Development and Innovation Management (DMCDI), Technical University of Cluj-Napoca, 15 Constantin Daicoviciu Street, Cluj-Napoca 400020, Cluj county, Romania., Trong DN; Institute of Physics, University of Zielona Góra, Prof. Szafrana 4a, Zielona Góra 65-516, Poland.; Faculty of Physics, Hanoi National University of Education, 136 Xuan Thuy, Cau giay, Ha Noi 100000, Vietnam.
Jazyk:	angličtina
Zdroj:	ACS omega [ACS Omega] 2022 Jun 03; Vol. 7 (23), pp. 19842-19852. Date of Electronic Publication: 2022 Jun 03 (Print Publication: 2022).
DOI:	10.1021/acsomega.2c01561
Abstrakt:	Polypyrrole (PPy) films doped with molybdate and salicylate have been successfully electropolymerized on low carbon steel in aqueous solutions containing both molybdate and salicylate in a one-step process that did not require any pre-treatment of the steel substrate. Salicylate-doped PPy films were synthesized in the same way for comparison. The steel surface was rapidly inhibited and the PPy-based films were formed on it easily. The PPy-based films were characterized by Fourier transform infrared, scanning electron microscopy, energy dispersive X-ray, and thermal gravimetric analysis methods. The corrosion protection performance of the coatings was investigated with electrochemical impedance spectroscopy, open circuit potential (OCP), salt spray test, and Tafel polarization. It was found that in the presence of both molybdate and salicylate as dopants, the films on steel could present a better corrosion resistance than PPy film doped with only salicylate. The self-healing property of PPy-based films was observed on the OCP measurement with the fluctuation of rest potential. The salt spray test results showed that the PPy film doped with both salicylate and molybdate was more salt-resistant than the PPy film doped with only salicylate. The results suggest that the PPy coatings doped with both molybdate and salicylate are potential for application as metallic anti-corrosion coatings. Competing Interests: The authors declare no competing financial interest. (© 2022 The Authors. Published by American Chemical Society.)
Databáze:	MEDLINE
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