Optimized formulation of NiFe 2 O 4 @Ca-alginate composite as a selective and magnetic adsorbent for cationic dyes: Experimental and modeling study

Cojocaru, Corneliu; Humelnicu, Andra Cristina; Samoilă, Petrişor; Pascariu, Petronela; Harabagiu, Valeria

doi:10.1016/j.reactfunctpolym.2018.02.008

Cited by 15 publications

(4 citation statements)

References 58 publications

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“…Nickel ferrite (NiFe 2 O 4 ) is an interesting soft magnetic material with notable magneto‐conductivity and low hysteresis loss . In recent past, ferrite‐based nanocomposites have drawn significant attention on account of their potential application as adsorbents for removal of dyes from wastewater . In context of polymer nanocomposites, conducting polymers are of considerable interest because of their high conductivity, environmental stability, cost effective monomer, ease of synthesis and unique physicochemical properties .…”

Section: Introductionmentioning

confidence: 99%

Preparation of NiFe₂O₄/polythiophene nanocomposite and its enhanced adsorptive uptake of Janus green B and Fuchsin basic from aqueous solution: Isotherm and kinetics studies

Hussain

Siddiqui

Khan

2019

Env Prog and Sustain Energy

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NiFe 2 O 4 /polythiophene nanocomposite was synthesized by in situ chemical oxidative polymerization of thiophene in NiFe 2 O 4 nanoparticles presence, whereas NiFe 2 O 4 nanoparticles were prepared via coprecipitation method. Fourier transform infrared (FTIR), X-ray diffraction (XRD), UV-Visible, and SEM, EDX techniques were used for characterization of the nanocomposite. The effect of various parameters such as adsorbent dose, contact time, initial dye concentration, and initial pH of solution on the adsorption of Janus green B (JG) and Fuchsin basic (FB) onto the nanocomposite was optimized by batch studies. The equilibrium uptake data ascribed well to the Langmuir model with maximum adsorption capacity of 143 and 498 mg/g at 303 K for JG and FB, respectively. The exceptional high adsorption capacity of NiFe 2 O 4 /polythiophene nanocomposite for JG and FB was ascribed to π-π and electrostatic interactions. Kinetics studies pointed out that JG and FB removal followed pseudo-second order model. The negative values of ΔH (JG: -47.28; FB: −38.00 kJ/ mol) and ΔG (JG: −9.347 to −6.442; FB: −14.16 to -12.85 kJ/mol) pointed out the feasibility, spontaneity, and exothermic nature of removal process. Negative value of ΔS (JG: -0.125; FB: -0.078 kJ/mol) suggested decrease in randomness at the solid/ liquid interface. The results showed that NiFe 2 O 4 /polythiophene is an appealing adsorbent for the uptake of JG and FB dyes from aquatic environment. K E Y W O R D S adsorption, Fuchsin basic, Janus green B, NiFe 2 O 4 /polythiophene nanocomposite, non-linear regression analyses, thermodynamics

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Section: Introductionmentioning

confidence: 99%

Preparation of NiFe₂O₄/polythiophene nanocomposite and its enhanced adsorptive uptake of Janus green B and Fuchsin basic from aqueous solution: Isotherm and kinetics studies

Hussain

Siddiqui

Khan

2019

Env Prog and Sustain Energy

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“…The observed yield reached the peak (98.6 %) with the H2O2 content of 0.5 mL. In the medium, H2O2 was stated to act as the reservoir of the oxygen-free radicals, particularly hydroxyl radicals (•OH) to facilitate the oxidation as shown in equation (2). In order words, the substitution of ferrite material will enhance the reaction between H2O2 with Fe 3+ agents, thereby generating many •OH radicals for enhanced MB scavenging.…”

Section: Effect Of Processing Condition On Fenton Catalytic Degradationmentioning

confidence: 99%

“…Therefore, advanced oxidation processes such as Fenton are often combined with adsorption to create a synergistic effect for the efficient elimination of organic pollutants in aqueous media. [ 2,3 ] However, the combination of adsorption and advanced oxidation processes mainly depends on the properties of the adsorbent and the interaction between adsorbate and adsorbent.…”

Section: Introductionmentioning

confidence: 99%

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Nickel ferrite nanoparticles‐doped graphene oxide as a heterogeneous Fenton catalyst: Synthesis, characterization, and catalytic application

Thy,

Tuyen,

Viet

et al. 2022

Vietnam Journal of Chemistry

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In this study, nickel ferrite nanoparticles‐doped graphene oxide nanocomposite (NiFe2O4/GO or NG) was fabricated by impregnation method with five different mass ratios of NiFe2O4:GO, namely, 1:1, 3:7, 4:6, 7:3, and 6:4, corresponding to NG1, NG2, NG3, NG4, and NG5 samples. According to the catalytic efficiency of the Fenton reaction of methylene blue (MB), the NG3 sample was chosen as the most appropriate sample, which possessed the highest catalytic efficiency. The effects of volume of H2O2, reaction time, and MB concentration, on the catalytic efficiency of NG3, were also investigated. The results revealed that with the 0.5 mL H2O2, MB concentration of 150 mg/L, and 60 min, the NG3 sample exhibited the highest catalytic efficiency of more than 99 %. The characterization of NG3 was investigated by advanced analysis methods. The results indicated that NiFe2O4 possessed a sphere shape with the size of 10‐30 nm, which was uniformly distributed on the GO sheets. Additionally, NG3 possessed a high specific surface area and magnetism. The above results confirmed that NiFe2O4/GO can be potentially applied in the treatment of organic dyes in water.

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Chitin and Chitosan for Water Purification

Samoilă

Humelnicu

Ignat

et al. 2019

Chitin and Chitosan

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Optimized formulation of NiFe 2 O 4 @Ca-alginate composite as a selective and magnetic adsorbent for cationic dyes: Experimental and modeling study

Cited by 15 publications

References 58 publications

Preparation of NiFe₂O₄/polythiophene nanocomposite and its enhanced adsorptive uptake of Janus green B and Fuchsin basic from aqueous solution: Isotherm and kinetics studies

Preparation of NiFe₂O₄/polythiophene nanocomposite and its enhanced adsorptive uptake of Janus green B and Fuchsin basic from aqueous solution: Isotherm and kinetics studies

Nickel ferrite nanoparticles‐doped graphene oxide as a heterogeneous Fenton catalyst: Synthesis, characterization, and catalytic application

Chitin and Chitosan for Water Purification

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Optimized formulation of NiFe 2 O 4 @Ca-alginate composite as a selective and magnetic adsorbent for cationic dyes: Experimental and modeling study

Cited by 15 publications

References 58 publications

Preparation of NiFe2O4/polythiophene nanocomposite and its enhanced adsorptive uptake of Janus green B and Fuchsin basic from aqueous solution: Isotherm and kinetics studies

Preparation of NiFe2O4/polythiophene nanocomposite and its enhanced adsorptive uptake of Janus green B and Fuchsin basic from aqueous solution: Isotherm and kinetics studies

Nickel ferrite nanoparticles‐doped graphene oxide as a heterogeneous Fenton catalyst: Synthesis, characterization, and catalytic application

Chitin and Chitosan for Water Purification

Contact Info

Product

Resources

About

Preparation of NiFe₂O₄/polythiophene nanocomposite and its enhanced adsorptive uptake of Janus green B and Fuchsin basic from aqueous solution: Isotherm and kinetics studies

Preparation of NiFe₂O₄/polythiophene nanocomposite and its enhanced adsorptive uptake of Janus green B and Fuchsin basic from aqueous solution: Isotherm and kinetics studies