Plant extracts as sustainable and green corrosion inhibitors for protection of ferrous metals in corrosive media: A mini review

• Published in: Corrosion communications Vol. 5; pp. 25 - 38
• Main Authors: Zakeri, Ali, Bahmani, Elnaz, Aghdam, Alireza Sabour Rouh
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.03.2022; Elsevier
• Subjects: Corrosion inhibitor; Corrosion protection; Green chemistry; Phytochemicals; Plant extracts; Green chemistry; Phytochemicals; Corrosion protection; Corrosion inhibitor; Plant extracts
• ISSN: 2667-2669; 2667-2669
• DOI: 10.1016/j.corcom.2022.03.002

•Natural plant extracts have been widely used for ferrous metals and alloys protection.•Several electrochemical and weight loss measurements have been utilized to determine the inhibition efficiency in various corrosive media.•Theoretical investigations have been implemented to elucidate the nature of the corrosion inhibitor adsorption and interaction on metal surface.•This work reports a brief overview of the recent progress in plant-based green corrosion inhibitors for ferrous metals protection in various corrosive media. Application of green corrosion inhibitors, which reduce corrosion rates to the appropriate level with low environmental impact, is one of the emerging key approaches of controlling corrosion in modern society. From the standpoint of environmental compatibility, this research field is undergoing significant developments. Nowadays, due to increasing ecological awareness, corrosion inhibitors are subject to stringent restrictions and regulations enforced by environmental agencies in a number of nations. According to these requirements, these chemicals must be environmentally acceptable and safe. In light of this, intensive research has been undertaken in recent years aimed at development of green corrosion inhibitors from plant extracts. Being readily available, inexpensive, biodegradable, and safe make these substances promising alternatives to the hazardous conventional corrosion inhibitors. The purpose of this review article is to summarize, in a brief manner, a compilation of recent prominent papers on utilizing plant extracts as sustainable and green corrosion inhibitors. In addition, some discussions were made on the benefits and drawbacks of employing these substances for protection of metals. [Display omitted]