2019
DOI: 10.1088/1742-6596/1234/1/012095
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Synthesis and Characterization of Graphene Oxide/Hydrogel Composites and Their Applications to Adsorptive Removal Congo Red from Aqueous Solution

Abstract: Graphene oxide / (polyvinylpyrrolidone / acrylic acid) composite GO/ (PVP-AAc) was studied as adsorbent for the Congo red dye. The synthesized composites hydrogels were characterized by Fourier transform infrared spectroscopy (FTIR). The process of adsorption of the Congo red (CR) dye on the surface of the GO/ (PVP-AAc) composite has reached equilibrium state within 60 minutes. The rate of adsorption of the dye on the surface was good due to the high surface area characteristic of the surface of the composite.… Show more

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Cited by 10 publications
(4 citation statements)
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“…In the same manner many weights of (PVP-AAc) (0.01-0.15 g) were used for choosing the best weight for further studies, and from fig. 3B show the best weight equal to 0.05 [15,21]. Fig.…”
Section: Description Of Go/(pvp-aac) Composite Before and After Doxycmentioning
confidence: 92%
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“…In the same manner many weights of (PVP-AAc) (0.01-0.15 g) were used for choosing the best weight for further studies, and from fig. 3B show the best weight equal to 0.05 [15,21]. Fig.…”
Section: Description Of Go/(pvp-aac) Composite Before and After Doxycmentioning
confidence: 92%
“…The increasing of the temperature was done as follows: one hour (45 ° C), two hours for each 55 and 65 ° C. The resulted hydrogel placed in cool room and then removed from the tubes and cut into small particles of about 6mm long. After that, they are washed for a week using ethanol and distilled water to eliminate all non-reactive monomers, then they are dried at 25 ° C, and later dried at 50 to 60 ° C using an electric oven till a constant weight is achieved [15]. The same method that used to prepare the (PVP / AAc) hydrogel was used to make the GO/PVP-AAc hydrogel composite, but with the adding of (0.8% w/v) of GO in ratio (1:10) to the mixture.…”
Section: Preparation Of (Pvp/aac) Hydrogel and Go/pvp-aac Hydrogel Comentioning
confidence: 99%
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“…8,9 High-efficiency, low-cost water treatment is the most critical application for this technique. 10,11…”
Section: Introductionmentioning
confidence: 99%