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The use of food additives as green and environmental-friendly anti-corrosion inhibitors for protection of metals and alloys: a review

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Abstract

Corrosion inhibitors have offered new opportunities to bring positive impacts on our society, especially when it has helped in protecting metals against corrosion in an aqueous solution. Unfortunately, the commonly known corrosion inhibitors used to protect metals or alloys against corrosion are invariably related to one or more drawbacks such as the employment of hazardous anti-corrosion agents, leakage of anti-corrosion agents in aqueous solution, and high solubility of anti-corrosion agents in water. Over the years, using food additives as anti-corrosion agents have drawn interest as it offers biocompatibility, less toxic, and promising applications. In general, food additives are considered safe for human consumption worldwide, and it was rigorously tested and approved by the US Food and Drug Administration. Nowadays, researchers are more interested in innovating and using green, less toxic, and economical corrosion inhibitors in metal and alloy protection. As such, we have reviewed the use of food additives to protect metals and alloys against corrosion. The current review is significant and differs from the previous review articles made on corrosion inhibitors, in which the new role of food additives is highlighted as green and environmental-friendly substances in the protection of metals and alloys against corrosion. It is anticipated that the next generation will be utilizing non-toxic and sustainable anti-corrosion agents, in which food additives might be the potential to fulfill the green chemistry goals.

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Abbreviations

AA:

Ascorbic acid

Cu:

Copper

EIS:

Electrochemical impedance spectroscopy

FDA:

Food and drug administration

HCl:

Hydrochloric acid

H2SO4 :

Sulfuric acid

IR:

Infrared

K:

Kelvin

KCl:

Potassium chloride

M:

Molarity

Min:

Minute

NaCl:

Sodium chloride

Na2CO3 :

Sodium carbonate

nm:

Nanometer

NPs:

Nanoparticles

OPCW:

Organization for the prohibition of chemical weapons

PDP:

Potentiodynamic polarization

pH:

Potential of hydrogen

SEM:

Scanning electron microscopy (SEM)

SHMP:

Sodium hexametaphosphate

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Funding

We would like to express our sincere gratitude to the Organization For The Prohibition of Chemical Weapons (OPCW) for providing the research grant (project Account No: L/ICA/ICB-115/21) and (UMT/PPP/2–2/25 Jld. 9 (94), No. Vot: 53481).

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Authors

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Low Ee Jian, Hanis Mohd Yusoff, Nurhanna Batar, Intan Nur Zulayqha Nor Azmi, Katta Venkateswarlu, Mohammad Fakhratul Ridwan Zulkifli, Poh Wai Chia: conceptualization, methodology, investigation. Su Shiung Lam, Su-Yin Kan, Rock Keey Liew, Gaik Ee Lee, Katta Venkateswarlu, Mohammad Fakhratul Ridwan Zulkifli: data curation, writing—original draft preparation: Poh Wai Chia: supervision.

Corresponding author

Correspondence to Poh Wai Chia.

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The corresponding author on behalf of all co-authors agreed to publish in Environmental Science and Pollution Research.

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The authors declare no competing interests.

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Responsible Editor: George Z. Kyzas

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Low, E.J., Yusoff, H.M., Batar, N. et al. The use of food additives as green and environmental-friendly anti-corrosion inhibitors for protection of metals and alloys: a review. Environ Sci Pollut Res 30, 76297–76307 (2023). https://doi.org/10.1007/s11356-023-27823-3

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  • DOI: https://doi.org/10.1007/s11356-023-27823-3

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