Liriope platyphylla extract as a green inhibitor for mild steel corrosion in sulfuric acid medium. Issue 1 (2nd January 2021)

• Record Type: Journal Article
• Authors: Chung, Ill-Min; Hemapriya, Venkatesan; Kim, Seung-Hyun; Ponnusamy, Kanchana; Arunadevi, Natarajan; Chitra, Subramanian; Prabakaran, Mayakrishnan; Gopiraman, Mayakrishnan
• Is Part Of: Chemical engineering communications. Volume 208:Issue 1(2021)
• Page Start: 72
• Page End: 88
• Publication Date: 2021-01-02
• Subjects: AFM -- antioxidant activity -- corrosion -- Liriope platyphylla -- SEM -- UHPLC; Chemical engineering -- Periodicals; 660.205
• DOI: 10.1080/00986445.2019.1692001
• Languages: English
• ISSNs: 0098-6445

Abstract

Abstract: The phytochemical components of the methanol extract of Liriope platyphylla ( L. platyphylla ) leaves were identified using UHPLC, and their antioxidant activities were studied. The impact of the L. platyphylla extract on the corrosion of mild steel by 1 M H2 SO4 was assessed using electrochemical and gravimetric techniques. L. platyphylla exhibited concentration-dependent corrosion protection activity through a mixed-mode adsorption process, as revealed by polarization studies. Impedance measurements indicated the development of a protective film of the inhibitor, which was confirmed by morphology studies at the micro level with scanning electron microscopy (SEM) and at the nano level with atomic force microscopy (AFM). Fourier transform infrared (FT-IR) studies also confirmed the adsorption of the inhibitor film onto the mild steel surface.