Efficient corrosion inhibition by sugarcane purple rind extract for carbon steel in HCl solution: mechanism analyses by experimental and <i>in silico</i> insights

Meng, Siguang; Liu, Zining; Zhao, Xiaoqi; Fan, Baomin; Líu, Hao; Guo, Mao Zhen; Hao, Hua

doi:10.1039/d1ra04976c

Cited by 38 publications

(10 citation statements)

References 60 publications

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“…The decrease of R ct , indicates that the corrosion medium has reached the metal/coating interface, which leads to the delamination of the coating (Nguyen et al , 2022). Nevertheless, the build-up of corrosion products at the defect area leads R ct to rise (Mahidashti et al , 2018; Meng et al , 2021). Among all the samples, 5CeO 2 -f/EP showed the highest fitted R c and R ct of 3.32 × 10 7 Ω cm 2 and 1.95 × 10 8 Ω cm 2 , respectively.…”

Section: Resultsmentioning

confidence: 99%

Cerium dioxide modified with fumaric acid as corrosion inhibitor for epoxy coatings on Q235

Dong

Zhang

et al. 2023

ACMM

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Purpose The purpose of this study is to modify cerium dioxide with fumaric acid (CeO2-f) to improve its compatibility and dispersibility in epoxy resin and to investigate the effect of the content on the coating performance. Design/methodology/approach To investigate whether CeO2-f reacts with epoxy resin by ring opening, CeO2-f and epoxy resin-treated CeO2-f (Ce CeO2-f/EP) were analyzed by infrared radiation (IR), X-ray diffraction (XRD) and ultraviolet-visible diffuse reflectance spectroscopy (UV-Vis). To reveal the effect of different content on coatings properties, neutral salt spray test (NSST) and electrochemical test were performed. Findings The results of IR, XRD, X-ray photoelectron spectroscopy and UV-Vis indicated that fumaric acid attached to the CeO2 surface by chemical bonding and underwent a ring-opening reaction with epoxy resin, thus, improving the compatibility of CeO2 in epoxy resin. NSST and electrochemical impedance spectroscopy results showed that the coatings containing 5% CeO2-f exhibited the optimal corrosion resistance. The reason is that a dense conversion film was established on the substrate surface. Originality/value The epoxy coatings using CeO2-f as fillers with synergistic inhibition ability are promising for the protection of carbon steel.

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Section: Resultsmentioning

confidence: 99%

Cerium dioxide modified with fumaric acid as corrosion inhibitor for epoxy coatings on Q235

Dong

Zhang

et al. 2023

ACMM

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“…An effect due to DPE incorporation on film morphology has also been exhibited in a pH-sensitive intelligent gelatin-based film [ 73 ] cassava starch–chitosan film [ 28 ]. In addition, the effect of substrate surface modification was observed in other natural active ingredients, such as cinnamaldehyde [ 74 ], and sugarcane purple rind extract [ 75 ], on the surface of carbon steel and steel, respectively.…”

Section: Resultsmentioning

confidence: 99%

Dragon Fruit Peel Extract Enriched-Biocomposite Wrapping Film: Characterization and Application on Coconut Milk Candy

et al. 2023

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Bio-based film is an eco-friendly alternative to petroleum-based packaging film. The effects of biocomposite wrapping film enhanced with dragon fruit peel extract (0, 2% w/v, respectively) and currently used commercial packaging film (polypropylene; PP) on coconut milk caramels during storage (30 °C, 75% RH, nine days) were studied. Both 0% and 2% DPE-enriched biocomposite films were thicker and had higher water vapor permeability and solubility than the PP film but poorer mechanical characteristics. In addition, the 2% film possessed antioxidants and antioxidant ability. A FESEM micrograph revealed the rough surface and porous path of the biocomposite films. Over the storage time, the moisture content, water activity, and springiness of the coconut milk caramel candy wrapped in the PP and all DPE-enriched biocomposite films were not significantly altered. However, the lipid oxidation as the thiobarbituric acid reactive substance (TBARS) and hardness of all coconut caramels were significantly (p < 0.05) increased during storage. Furthermore, the hardness of coconut candy covered in the control (0% DPE) biocomposite film was more pronounced on day nine of storage. However, the changes in quality characteristics of the coconut candy wrapped in each film type need to be better established. The investigating factors influencing the quality deterioration of coconut milk candy should be further identified to mitigate their effects and extend the shelf-life of the coconut candy.

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“…In Figure 2 e, the copper substrate can be obviously distinguished (yellow-dot-framed regions) from the coated PPy layer, which coincides well with the optical image as displayed in Figure 2 c. On the contrary, Figure 2 d presents a uniform distribution of tightly stacked cauliflower-like bulks for PPy-I coating. Moreover, the interfacial wettability can also reflect the performance of protective coatings in an aqueous media [ 26 ]. As shown in the inset of Figure 2 e, the CA of the PPy-T-coated specimen was 46.1°, and this relatively low CA value may be ascribed to the incomplete coating structure.…”

Section: Resultsmentioning

confidence: 99%

Optimized Anticorrosion of Polypyrrole Coating by Inverted-Electrode Strategy: Experimental and Molecular Dynamics Investigations

et al. 2022

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To improve the poor adhesion and the ensuing insufficient anticorrosion efficacy of electropolymerized polypyrrole (PPy) on copper surface, an inverted-electrode strategy was applied after the passivation procedure, for which the compact coating (PPy-I) was deposited on the substrate in a cathodic window. Morphological and physical characterizations revealed that PPy-I exerted satisfactory adhesion strength and suitable thickness and conductivity compared with the analogue prepared via the traditional protocol (PPy-T). Potentiodynamic polarization, electrochemical impedance spectroscopy and frequency modulation were employed to ascertain the propitious protection of PPy-I for copper in artificial seawater (ASW). Due to the dominant electroactivity, the PPy-I-coated sample possessed higher apparent current density and lower charge transfer resistance than its PPy-T-protected counterpart, which maintained the passivation of the substrate. Surface analysis also supported the viability of PPy-I for copper in ASW for a well-protected surface with inferior water wettability. Molecular dynamics simulations evidenced that PPy-I with the higher density retained efficient anticorrosion capacity on copper at elevated temperatures. Therein, the derived time-dependent spatial diffusion trajectories of ions were locally confined with low diffusion coefficients. Highly twisted pore passages and anodic protection behavior arising respectively from the tight coating architecture and electroactivity contributed to the adequate corrosion resistance of PPy-I-coated copper.

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Efficient corrosion inhibition by sugarcane purple rind extract for carbon steel in HCl solution: mechanism analyses by experimental and in silico insights

Abstract: The anticorrosive mechanism of extracted components from sugarcane purple rind for carbon steel in HCl solution is clarified by weight loss, electrochemical and theoretical (novel DFT calculation and molecular dynamics simulation) analyses.

Cited by 38 publications

References 60 publications

Cerium dioxide modified with fumaric acid as corrosion inhibitor for epoxy coatings on Q235

Cerium dioxide modified with fumaric acid as corrosion inhibitor for epoxy coatings on Q235

Dragon Fruit Peel Extract Enriched-Biocomposite Wrapping Film: Characterization and Application on Coconut Milk Candy

Optimized Anticorrosion of Polypyrrole Coating by Inverted-Electrode Strategy: Experimental and Molecular Dynamics Investigations

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