Investigation on the binding force between lignin and magnetic Fe3O4 nanoparticles with AFM

Zheng, Dafeng; Dong, Rui-jing; Li, Qiong; Qiu, Xueqing

doi:10.1016/j.apsusc.2020.148146

Cited by 9 publications

(2 citation statements)

References 22 publications

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“…Compared with the specimen in PBS solution, the deepest pit (S v ) of the specimen in PBS solution with 2.0 g/L BSA has decreased by 8.72%, further, the RMS height (S q ), which is a measure of the standard deviation of heights from the mean plane within the observed area, decreased by 22.0%, and the arithmetic mean height (S a ) commonly used to evaluate the surface roughness is reduced from 63.4 nm to 47.1 nm. These parameters indicate less corrosion occurs in the specimen surface with 2.0 g/L BSA (Zheng et al, 2021;Saraswat and Yadav, 2019). However, the presence of high-concentration BSA (5.0 g/L) would increase the values of S v , S q and S a , aggravating the localized corrosion.…”

Section: Cyclic Potentiodynamic Polarization Testsmentioning

confidence: 95%

Evaluation of the corrosion behavior of AZ31 magnesium alloy with different protein concentrations

Ma¹,

Talha²,

Wang³

et al. 2021

ACMM

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Purpose The purpose of this paper is to study systematically the corrosion behavior of AZ31 magnesium (Mg) alloy with different concentrations of bovine serum albumin (BSA) (0, 0.5, 1.0, 1.5, 2.0 and 5.0 g/L). Design/methodology/approach Electrochemical impedance spectroscopy and potential dynamic polarization tests were performed to obtain corrosion parameters. Scanning electrochemical microscopy (SECM) was used to analyze the local electrochemical activity of the surface film. Atomic force microscope (AFM), Scanning electron microscope-Energy dispersive spectrometer and Fourier transform infrared spectroscopy were used to determine the surface morphology and chemical composition of the surface film. Findings Experimental results showed the presence of BSA in a certain concentration range (0 to 2.0 g/L) has a greater inhibitory effect on the corrosion of AZ31, however, the presence of high-concentration BSA (5.0 g/L) would sharply reduce the corrosion resistance. Originality/value When the concentration of BSA is less than 2.0 g/L, the corrosion resistance of AZ31 enhances with the concentration. The adsorption BSA layer will come into being a physical barrier to inhibit the corrosion process. However, high-concentration BSA (5.0 g/L) will chelate with dissolved metal ions (such as Mg and Ni) to form soluble complexes, which increases the roughness of the surface and accelerates the corrosion process.

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Section: Cyclic Potentiodynamic Polarization Testsmentioning

confidence: 95%

Evaluation of the corrosion behavior of AZ31 magnesium alloy with different protein concentrations

Ma¹,

Talha²,

Wang³

et al. 2021

ACMM

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“…An electrostatic attraction, Van Der Waals force, and hydrogen bond played roles in binding the nano-magnetite with lignin. Hence, the bonds are formed among them, resulting in wood discoloration (Zheng et al 2021). The presence of nano-magnetite on the sengon wood surface also contributed to the large specific surface area of wood samples, corresponding to the large specific surface area of nano-magnetite particles (Feng et al 2023).…”

Section: Wood Discolorationmentioning

confidence: 99%

The Effect of Synthetic and Commercial Nano-Magnetite on the Electromagnetic Absorbance Behavior of Magnetic Wood

Rahayu,

Sabarna,

Wahyuningtyas

et al. 2024

J. Sylva Lestari

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Magnetic wood with good electromagnetic wave absorption properties was prepared by comparing synthetic and commercial nano-magnetite (Fe3O4-NP) as sengon (Falcataria moluccana) wood impregnation solution. The co-precipitation method produced a synthetic nano-magnetite with NH4OH as a weak base precursor. Meanwhile, the commercial one was purchased from a supplier. Three levels of nano-magnetite concentration (1%, 2.5%, and 5%) were dispersed in deionized water. The impregnation process was done by applying a vacuum of 0.5 bar for 120 minutes, followed by a pressure of 1 bar for 120 minutes. The results showed that the commercial nano-magnetite caused more improvements in weight percent gain, density, and hardness than the synthetic nano-magnetic, although they were insignificantly different. There was also a reduction in brightness with the overall color change being categorized into other colors because the color became darker with increasing nano-magnetite concentration in both woods. The absorbance capacity of the synthetic nano-magnetite-treated wood was larger than the commercial nano-magnetite-treated wood. This synthetic nano-magnetite-treated wood had been optimally treated at a 5% concentration, making it suitable for use as electromagnetic wave shielding material because it can absorb almost 100% electromagnetic waves. Keywords: Fe3O4, impregnation, nano-magnetite, sengon wood, shielding materials

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Unlocking the secret of lignin-enzyme interactions: Recent advances in developing state-of-the-art analytical techniques

Zhao

Meng

Ragauskas

et al. 2022

Biotechnology Advances

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Investigation on the binding force between lignin and magnetic Fe3O4 nanoparticles with AFM

Cited by 9 publications

References 22 publications

Evaluation of the corrosion behavior of AZ31 magnesium alloy with different protein concentrations

Evaluation of the corrosion behavior of AZ31 magnesium alloy with different protein concentrations

The Effect of Synthetic and Commercial Nano-Magnetite on the Electromagnetic Absorbance Behavior of Magnetic Wood

Unlocking the secret of lignin-enzyme interactions: Recent advances in developing state-of-the-art analytical techniques

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