Carbon dots as new eco-friendly and effective corrosion inhibitor

Cui, Mingjun; Ren, Siming; Xue, Qunji; Zhao, Haichao; Wang, Liping

doi:10.1016/j.jallcom.2017.08.027

Cited by 147 publications

(45 citation statements)

References 41 publications

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“…Cui et al found that nitrogendoped CDs (NCDs) prepared with antibiotic aminosalicylic acid (ASA) or p-phenylenediamine (p-PD), or o-phenylenediamine (o-PD) could effectively suppress corrosion of Q235 carbon steel in 1 M HCl solution, exhibiting a high inhibition efficiency up to 90%. 12,13 Subsequently, it was found that these NCDs could also provide excellent protection for Cu at a temperature of 298-318 K in 0.5 M H 2 SO 4 solution. 14 Besides, Ye et al prepared various types of NCDs with different source materials and investigated their corrosion inhibition performance.…”

Section: Introductionmentioning

confidence: 99%

Nitrogen and sulfur Co-doped carbon dots as ecofriendly and effective corrosion inhibitors for Q235 carbon steel in 1 M HCl solution

Cui

2021

RSC Adv.

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Section: Introductionmentioning

confidence: 99%

Nitrogen and sulfur Co-doped carbon dots as ecofriendly and effective corrosion inhibitors for Q235 carbon steel in 1 M HCl solution

Cui

2021

RSC Adv.

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“…In particular, as newcomers, carbons dots have been involved in some anticorrosive studies. In a previous study, we found that nitrogen-doped carbon dots (NCDs) prepared through a hydrothermal process of 4-aminosalicylic acid could effectively retard the acid corrosion of carbon steel at room temperature, and the inhibition efficiency was up to 91% in the presence of 10 ppm NCDs [18]. Afterwards, NCDs prepared with single source material (e.g., ammonium citrate, p-phenylenediamine and o-phenylenediamine) [19,20] or two kinds of source materials (citrate acid-ethanol amine, methacrylic acid-n-butylamine, citric acid-imidazole, citric acid-L-histidine) [21][22][23][24] were gradually reported, and they also exhibited good corrosion inhibition for metals exposed to acid solutions.…”

Section: Introductionmentioning

confidence: 99%

Effective Corrosion Inhibition of Carbon Steel in Hydrochloric Acid by Dopamine-Produced Carbon Dots

Cui

Zheng

2021

Polymers

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In present study, novel nitrogen doped carbon dots (NCDs) are synthesized using a green material—dopamine—as a precursor and studied as corrosion inhibitors for Q235 carbon steel in 1 M HCl solution. According to the electrochemical results, it is found that NCDs acting as a mixed-type corrosion inhibitor can effectively retard the acid corrosion of carbon steel, and their inhibition efficiency increases with the concentration increasing from 50 to 400 ppm. The highest inhibition efficiency is 96.1% in the presence of 400 ppm NCDs at room temperature. Additionally, the adsorption of NCDs obeys the Langmuir adsorption isotherm. In addition, weight loss results show that the inhibition efficiency in the presence of 400 ppm NCDs increases with prolonged exposure time and rising temperature (298–328 K), owing to the strong adsorption of NCDs on the steel surface, and the η value is 92.2% at 60 h of immersion and 86.2%, 89.1%, 90.6% and 92.9% at 298, 308, 318 and 328 K, respectively. Surface analysis by scanning electron microscope (SEM), laser scanning confocal microscope (LSCM) and X-ray photoelectron spectroscopy (XPS) further proves the formation of a protective NCD film on the steel surface.

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“…[ 3,4 ] Simultaneously, they can also be used as good fluorescent labeling and imaging material, and they have extensive development and application space in the fields of drug delivery transportation, cell development, biochemical sensing, and photocatalysis. [ 5–8 ] At present, CDs are a promising drug carrier and biosensor material, which have become a research hot spot in recent years. [ 9–11 ] In terms of a carrier, they have many oxygen‐containing groups, hydrophilicity, and large specific surface area, which can carry a large number of drugs and achieve faster drug release.…”

Section: Introductionmentioning

confidence: 99%

Spectroscopic cyclic voltammetry, and molecular docking study on the molecular interaction between synthesized blue emitting nitrogen‐doped carbon dots and human serum albumin

et al. 2021

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Fluorescent carbon dots are a promising drug carrier and bio‐sensor material. The study between human serum albumin and carbon dots could explore the possible interaction mechanism. In this paper, melamine was adopted as passivating agent and citric acid as carbon source, high fluorescence nitrogen doped carbon dots (N‐CDs) were synthetized by one‐pot solid phase pyrolysis successfully. The obtained blue emissive N‐CDs with an average particle size of 2.8 ± 0.7 nm displayed an excitation‐dependent photoluminescence behavior, and the fluorescence quantum yield was estimated to be 12.8%. Moreover, the N‐CDs contained abundant hydroxyl, carboxyl, and amine groups. The molecular interaction between as‐prepared N‐CDs and HSA was systematically investigated in vitro through several spectroscopic methods associated with cyclic voltammetry (CV) and molecular docking. The quenching mechanism of HSA by N‐CDs was static through forming the HSA‐N‐CDs complex, and both hydrogen bonding and van der Waals forces were the fundamental driving forces in the spontaneous binding process. The distance between N‐CDs and HSA was 2.2 nm on the basis of Förster's theory. The competitive binding experiment showed that the binding of N‐CDs was primarily in site I of HSA. Through the analysis of circular dichroism (CD), synchronous fluorescence, and three‐dimensional fluorescence spectra, the secondary structure of HSA was altered in the presence of N‐CDs and the polarity around the amino acid residues of HSA was not changed. Besides, molecular simulation was applied to determine the possible binding situation. Our study explored the interaction mechanism of N‐CDs with HSA, which provided some valuable information for understanding the structure and function of proteins as well as the transport and metabolism of N‐CDs.

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Carbon dots as new eco-friendly and effective corrosion inhibitor

Cited by 147 publications

References 41 publications

Nitrogen and sulfur Co-doped carbon dots as ecofriendly and effective corrosion inhibitors for Q235 carbon steel in 1 M HCl solution

Nitrogen and sulfur Co-doped carbon dots as ecofriendly and effective corrosion inhibitors for Q235 carbon steel in 1 M HCl solution

Effective Corrosion Inhibition of Carbon Steel in Hydrochloric Acid by Dopamine-Produced Carbon Dots

Spectroscopic cyclic voltammetry, and molecular docking study on the molecular interaction between synthesized blue emitting nitrogen‐doped carbon dots and human serum albumin

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