Synthesis and characterization of a high-capacity cationic hydrogel adsorbent and its application in the removal of Acid Black 1 from aqueous solution

Fang, Run; He, Wenxuan; Xue, Hanyu; Chen, Weijian

doi:10.1016/j.reactfunctpolym.2016.02.013

Cited by 32 publications

(15 citation statements)

References 46 publications

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“…Table 3 shows that the R L value is between 0 and 1, which indicates that the adsorption is favorable for pollutants studied onto the synthesized nanocomposites. A comparison between various adsorbents (cited in the literature) and prepared nanocomposites (in this study) was done for the removal of AB 1 and Cr(VI) ions (Table 4) [39,[70][71][72][73][74][75][76][77][78][79][80][81][82][83][84]. As seen from the Table 4, the prepared adsorbent is more effective than the other reported ones.…”

Section: Adsorption Isothermsmentioning

confidence: 86%

Magnetic SiO 2 @CoFe 2 O 4 nanoparticles decorated on graphene oxide as efficient adsorbents for the removal of anionic pollutants from water

Santhosh

Daneshvar

Kollu

et al. 2017

Chemical Engineering Journal

104

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In this study, magnetic nanocomposites viz. SiO 2 @CoFe 2 O 4 nanoparticles decorated on graphene oxide were synthesized using solvothermal and sol-gel processes. The prepared nanocomposite materials were used as magnetic adsorbents for the removal of organic and inorganic pollutants (acid black 1 dye and Cr(VI) ions as model pollutants) from aqueous solution. The structure, morphology and other physico-chemical properties of nanocomposites were characterized by X-ray diffraction (XRD), field emission-scanning electron microscopy (FE-SEM), high resolutiontransmission electron microscopy (HR-TEM), vibrating sample magnetometer (VSM), X-ray Photo spectroscopy (XPS), zeta potential and Fourier infrared (FT-IR) spectroscopy. Batch mode adsorption studies were conducted with the prepared nanocomposites to determine the maximum adsorption capacity of acid black 1 dye and Cr(VI) ions as a function of contact time, pH, adsorbent dosage and initial adsorbate concentrations. Different kinetic and isotherm models were tested to describe and elucidate the adsorption mechanisms. Based on the experimental results obtained, the synthesized materials proved to exhibit considerable potential for the removal of acid black 1 and Cr(VI) ions from aqueous solution.

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Section: Adsorption Isothermsmentioning

confidence: 86%

Magnetic SiO 2 @CoFe 2 O 4 nanoparticles decorated on graphene oxide as efficient adsorbents for the removal of anionic pollutants from water

Santhosh

Daneshvar

Kollu

et al. 2017

Chemical Engineering Journal

104

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“…Smart hydrogels show changes in swelling behavior due to variation in environmental conditions like temperature, pH, electric field and solvent composition. Hydrogels can be defined in number of different ways.In most common definition, hydrogel is a cross-linked polymeric matrix, water-swollen material with three dimensional structures [5,6]. In another definition, hydrogel may be defined as hydrophilic three-dimensional polymeric material which has the capacity of absorbing large quantity of water and retain it inside its matrices without dissolution.…”

Section: Introductionmentioning

confidence: 99%

Recent progress in gelatin hydrogel nanocomposites for water purification and beyond

Thakur

Govender

Mamo

et al. 2017

Vacuum

129

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Innovative characteristics of hydrogels such as swellability, modifiability and hydrophilicity make them materials of choice for water treatment and other applications. Hydrogels have shown excellent adsorptive performance for different types of water pollutants comprising toxic dyes, nutrients and heavy metals. Among different types of hydrogel based materials, hydrogelnanomaterials combination represent a highly viable method to further improve the properties of hydrogel for numerous applications. The combination of hydrogel and nanomaterials leads to the development of hybrid hydrogel with multifunctional network. This novel combination gives synergistic effect to the newly formed novel hydrogel materials. In this article, we briefly review the recent progress in gelatin based hydrogel nanocomposites with particular emphasis on wastewater treatment along with biomedical applications.

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“…Super absorption properties of hydrogels are sensualized to their capability to absorb maximum volume of liquid or water (Shahmirzadi et al, 2018;Shin et al, 2009aShin et al, , 2009bWang et al, 2017), approximately 10 to 20 times to the actual weight (molecular weight) of hydrogel and after absorption of liquid or water, the hydrogel occupy swollen form (Fang et al, 2016;Kim et al, 1992). The applications of hydrogel like pliability, flexibleness, stretchiness and porousness are sensualized to the water absorption ability (Ji et al, 2018;Thakur and Arotiba, n.d.).…”

Section: Introductionmentioning

confidence: 99%

“…The limits of the reaction are mainly dependent upon the various kinds of functional groups, polymer structures and the amount of ions in polymer structure as well as the final solution, pH and temperature. The solution of a hydrophilic polymer in the water as a fluid can be stopped by the expansion of cross linkers by utilizing either physical or by chemical process and these crosslinked hydrosols are called hydrogels (Fang et al, 2016;Thakur and Thakur, 2014;Thakur and Voicu, 2016). They can swell just in the surrounding fluid to a specific swelling proportion dependent on the concentration of used cross linkers.…”

Section: Introductionmentioning

confidence: 99%

Progress in pectin based hydrogels for water purification: Trends and challenges

Thakur

Chaudhary

Kumar

et al. 2019

Journal of Environmental Management

121

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Pectin is one of the finest natural polymer which has drawn great attention because of its applications in different fields. Due to the quintessential structure of pectin, it can be transformed into variety of useful products. It can be utilized as a blend in many polymers to make a mixture or a composite material. Owing to considerable collection in chemical conformation and crosslinking mechanism, different pectin based hydrogels have been prepared for different characteristics in pharmaceutical and bio-medical sites. Inventive properties of hydrogels like volubility, swellability, solvability and hydrophilicity make them better alternative for wastewater treatment. Recently, pectin based hydrogels have demonstrated excellent performance to eliminate various metal ions and dyes from the polluted water. The adsorption

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Synthesis and characterization of a high-capacity cationic hydrogel adsorbent and its application in the removal of Acid Black 1 from aqueous solution

Cited by 32 publications

References 46 publications

Magnetic SiO 2 @CoFe 2 O 4 nanoparticles decorated on graphene oxide as efficient adsorbents for the removal of anionic pollutants from water

Magnetic SiO 2 @CoFe 2 O 4 nanoparticles decorated on graphene oxide as efficient adsorbents for the removal of anionic pollutants from water

Recent progress in gelatin hydrogel nanocomposites for water purification and beyond

Progress in pectin based hydrogels for water purification: Trends and challenges

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