View in EDS

Biomolecules-modified carbon dots for enhanced surface and interface properties and sustainable corrosion protection: Experimental and computational studies.

Saved in:
Bibliographic Details
Title: Biomolecules-modified carbon dots for enhanced surface and interface properties and sustainable corrosion protection: Experimental and computational studies.
Authors: Aslam, Ruby1,2 (AUTHOR), Aslam, Jeenat3 (AUTHOR), Wang, Qihui1,4 (AUTHOR), Sun, Yi1 (AUTHOR), Verma, Chandrabhan5 (AUTHOR), Alfantazi, Akram5 (AUTHOR), Yan, Zhitao1,6 (AUTHOR) yanzhitao@cqu.edu.cn
Source: Journal of Industrial & Engineering Chemistry. Dec2025, Vol. 152, p175-192. 18p.
Subjects: Corrosion prevention, Carbon nanodots, Amino acids, Electrochemical analysis, Surface properties, Biomolecules, Computer simulation, Empirical research
Abstract: [Display omitted] • The anti-corrosive properties of amino acid functionalized glucose-derived CD are studied. • 1H-NMR, FT-IR, XRD and TEM analysis confirmed the synthesis of CDs. • Studies suggested the better adsotption of CDTyr on metal as compated to CDLeu. • The CD Tyr and CD Leu manifested the %IE of 96.8% and 93.6%. • On the increasing temperature, corrosion rates decreased as compared to blank. The present study describes the anti-corrosive properties of tyrosine and leucine functionalized glucose-derived carbon dots, abbreviated as CD Tyr and CD Leu , respectively, for Q235B steel in a 5 % HCl solution. 1H-NMR, FT-IR, UV–vis, zeta potential, XRD and TEM analysis confirmed the preparation of functionalized CDs. The inhibition efficiencies and corrosion rates were calculated using mass loss and electrochemical methods. The inhibition effectiveness calculated for CD Tyr and CD Leu were, i.e., 96.8 % and 93.6 %, respectively, at 303 K at a very low concentration of both CDs, i.e., at 80 ppm. On increasing temperature from 303 to 313 K, corrosion rates decreased to 0.303 mm/y for CD Tyr and 1.11 mm/y for CD Leu , with %IE values of 97.84 % and 92.10 %, respectively. The experimental data from the immersion time test indicated that the CDs demonstrated consistently stable performance under static and dynamic conditions. Adsorption studies confirmed the spontaneous interaction and followed the Langmuir adsorption isotherm. The XPS analysis revealed the composition of the inhibitors' layer on the metals surface. AFM and SEM studies demonstrated reduced surface roughness. CD Tyr outperformed CD Leu due to the phenolic group enabling stronger hydrogen bonding and improved protective layer stability. DFT and MD simulations provided insights into CDs' electronic structure and stability derived from glucose and amino acid precursors, revealing distinct electronic characteristics. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Industrial & Engineering Chemistry is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
Description
Abstract:[Display omitted] • The anti-corrosive properties of amino acid functionalized glucose-derived CD are studied. • 1H-NMR, FT-IR, XRD and TEM analysis confirmed the synthesis of CDs. • Studies suggested the better adsotption of CDTyr on metal as compated to CDLeu. • The CD Tyr and CD Leu manifested the %IE of 96.8% and 93.6%. • On the increasing temperature, corrosion rates decreased as compared to blank. The present study describes the anti-corrosive properties of tyrosine and leucine functionalized glucose-derived carbon dots, abbreviated as CD Tyr and CD Leu , respectively, for Q235B steel in a 5 % HCl solution. 1H-NMR, FT-IR, UV–vis, zeta potential, XRD and TEM analysis confirmed the preparation of functionalized CDs. The inhibition efficiencies and corrosion rates were calculated using mass loss and electrochemical methods. The inhibition effectiveness calculated for CD Tyr and CD Leu were, i.e., 96.8 % and 93.6 %, respectively, at 303 K at a very low concentration of both CDs, i.e., at 80 ppm. On increasing temperature from 303 to 313 K, corrosion rates decreased to 0.303 mm/y for CD Tyr and 1.11 mm/y for CD Leu , with %IE values of 97.84 % and 92.10 %, respectively. The experimental data from the immersion time test indicated that the CDs demonstrated consistently stable performance under static and dynamic conditions. Adsorption studies confirmed the spontaneous interaction and followed the Langmuir adsorption isotherm. The XPS analysis revealed the composition of the inhibitors' layer on the metals surface. AFM and SEM studies demonstrated reduced surface roughness. CD Tyr outperformed CD Leu due to the phenolic group enabling stronger hydrogen bonding and improved protective layer stability. DFT and MD simulations provided insights into CDs' electronic structure and stability derived from glucose and amino acid precursors, revealing distinct electronic characteristics. [ABSTRACT FROM AUTHOR]
ISSN:1226086X
DOI:10.1016/j.jiec.2025.04.049