Electrochemical Corrosion Behavior of Graphene Oxide/Chitosan/Silver Nanoparticle Composite Coating on Stainless Steel Utensils in Aqueous Media

Bioumy, Sabrin A.; Ahmed, Rasha; Fekry, Amany M.

doi:10.1007/s40735-020-00375-6

Cited by 18 publications

(1 citation statement)

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“…The progress of adsorption was studied at different time intervals by sampling and filtration of the solution, followed by measuring the absorbance of the filtrate at 664 nm. pH of the solutions was adjusted to the desired value by using Britton-Robinson buffer, which is a universal pH buffer used for the pH range from 2 to 12 [7]. The chemical structure of methylene blue is shown in Figure 1.…”

Section: Batch Adsorption Studiesmentioning

confidence: 99%

Removal of Methylene Blue from Aqueous Solution By Polydopamine@Zeolitic Imidazolate-67

Hajnajafi

Khorshidi

Gilani

et al. 2021

Preprint

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Herein, a facile and low-cost route was used to prepare Polydopamine@Zeolitic Imidazolate Framework-67 (PDA@ZIF-67). The structure, morphology, surface functional groups and particle size distribution of PDA@ZIF-67 were studied using FTIR, FESEM, EDS, and BET analyses. The specific surface area and diameter of PDA@ZIF-67 were equal to be 78.203 m2/g and 4.179 mm, respectively. The PDA@ZIF-67 was used as an adsorbent for the adsorption of methylene blue dye. The results show that the maximum adsorption efficiency of methylene blue on the surface of PDA@ZIF-67 is achieved at pH 2, the temperature of 65°C, 10 mg of adsorbent, and methylene blue concentration of 7.5 ppm.Moreover, the adsorption process's isothermal, thermodynamic, and kinetics were studied entirely to consider the adsorption mechanism. The methylene blue molecules located in the fine pores of the PDA@ZIF-67 adsorbent determine the adsorption rate. Moreover, the adsorption process of methylene blue at high temperatures is a spontaneous and endothermic reaction. The adsorption efficiency of PDA@ZIF-67, after the recovery, reached 62.21%, which is an excellent advantage for using this adsorbent.

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Section: Batch Adsorption Studiesmentioning

confidence: 99%