ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Heterocyclic compounds and hybrid materials: green corrosion inhibitors for ferrous and non-ferrous materials

Walid Daoudi, Amarpreet Kour Bhatia, Shippi Dewangan, Rubina Sahin, Sonali Loya, Dakeshwar Kumar Verma, Ibrahim A. Naguib, and Abdelmalik El Aatiaoui

Laboratory of Molecular Chemistry, Materials and Environment (LCM2E), Department of Chemistry, Multidisciplinary Faculty of Nador, University Mohamed I, Nador, Morocco

E-mail: walid.daoudi@ump.ac.ma

Received: 7 February 2025  Accepted: 5 May 2025

Abstract:

With growing environmental awareness and changing regulations that restrict conventional corrosion inhibitors due to their toxicity, corrosion inhibitors are becoming interesting. Many organic compounds containing heteroatoms such as phosphorus, sulphur, oxygen and nitrogen are remarkably effective at inhibiting corrosion. The heteroatoms with the best corrosion-inhibiting properties follow the order P > S > N > O. Their effectiveness is attributed to the inclusion in the molecule of a lone pair and pi electrons, which facilitate their deposition on the metal surface. Extensive research has shown that virtually all corrosion inhibitors contain one or more heteroatoms, often in the form of polar functional groups, which enhances their propensity to adsorb to metal surfaces. Since then, much research on the use of N, P and S atoms has been published, but studies on the use of oxygen, oxygen–nitrogen and oxygen–nitrogen-sulphur heteroatoms are rare. Therefore, the aim of this study was to describe a variety of corrosion inhibitors containing oxygen, oxygen–nitrogen and oxygen–nitrogen-sulphur heteroatoms.

Keywords: Compound Screening; Corrosion; Heterogeneneous Catalysis; Inorganic Chemistry; Materials for Energy and Catalysis; Organic Molecules in Materials Science; Corrosion; Corrosion inhibitors; Heteroatoms; Sulphur and oxygen heterocyclic compound; Adsorption;

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-025-04122-4

Chemical Papers 79 (8) 4865–4882 (2025)