Synthesis and adsorption studies of NiO nanoparticles in the presence of H2acacen ligand, for removing Rhodamine B in wastewater treatment

Motahari, Fereshteh; Mozdianfard, Mohammad Reza; Salavati‐Niasari, Masoud

doi:10.1016/j.psep.2014.06.006

Cited by 160 publications

(43 citation statements)

References 39 publications

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“…Three forms have been reported for RB in aqueous solution: positively charged RB at low pH values (pH < 7), a zwitterion at high pH values (pH > 7), and a neutral molecule (lactonic) in non-polar or aprotic solvents. 1,6 RB is positively charged in the entire pH region of the study; also, the dye adsorption depends on the surface charge of the adsorbent, which was minimal at pH 3 and 4 and high at the high and low ends of the region.…”

Section: Surface Response Studiesmentioning

confidence: 99%

“…An isotherm was also used to determine the maximum amount of adsorbate (q max ) to be adsorbed. 1 The Langmuir isotherm is suitable for studying adsorption phenomena in which the adsorbent surface is homogenous and can adsorb a limited number of adsorbate molecules with constant energy during the entire adsorption process. C e /q e ¼ C e /q m + 1/q m b (9) q m in eqn (9) is the maximum adsorption capacity (mg g À1 ), and b is the equilibrium constant (L mg À1 ).…”

Section: Adsorption Isothermmentioning

confidence: 99%

“…Many countries face serious challenges regarding the preparation of safe drinking and sanitary water for human use because their natural sources of water are continuously contaminated by human activities. 1 The main factors involved in water contamination are industry, agriculture, and municipal waste effluents. These contaminated effluents comprise compounds such as nutrients, pesticides, heavy metals, petroleum derivatives, dyes, and other synthetic compounds.…”

Section: Introductionmentioning

confidence: 99%

“…Its use in foodstuffs is prohibited in many countries; however, it is still used illegally. 20,21 RB has previously been removed from aqueous solution by adsorption, 1,20,22,23 photo-catalytic degradation, [24][25][26][27] coagulation, and occulation. 6,28 RB has also been traced by methods such as electrochemistry, HPLC, 30 derivative spectrophotometry, 21 chemoluminescence, uorimetry, and UV-visible spectrophotometry.…”

Section: Introductionmentioning

confidence: 99%

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Highly effective adsorption of xanthene dyes (rhodamine B and erythrosine B) from aqueous solutions onto lemon citrus peel active carbon: characterization, resolving analysis, optimization and mechanistic studies

2017

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Section: Surface Response Studiesmentioning

confidence: 99%

Section: Adsorption Isothermmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Highly effective adsorption of xanthene dyes (rhodamine B and erythrosine B) from aqueous solutions onto lemon citrus peel active carbon: characterization, resolving analysis, optimization and mechanistic studies

2017

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“…Nanomaterial fabrication methods such as anodic plasma method, precipitation, thermal decomposition, sol‐gel technique, hydrothermal, and low pressure spray pyrolysis have been developed throughout the recent decades. Apart from emphasizing on the geometry, size, and chemical homogeneity of the nanomaterial synthesis processes, the overall feasibility and simplicity are also greatly considered to improve the efficiency of the fabrication process.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of NiO Nano‐Spheres by Templating on Chitosan as a Green Precursor

et al. 2016

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In this study, nickel oxide was prepared through the calcination of extrusion dripped chitosan/nickel nitrate beads. The morphology and structural properties of the products were studied using various characterization techniques. Uniformly distributed nickel oxide was formed as observed from the studies of surface morphology where the processing parameters play a huge role on the resulting morphology. TEM results have shown that nickel oxide with crystallite sizes of 10–30 nm was obtained. The Fourier-transform infrared spectra studies show an intense peak at 525 cm−1, which is attributed to the vibration of Ni–O bond. Furthermore, the XRD results show NiO diffraction peaks correspond to (111), (200), (220), (311), and (222) which indicates that a bunsenite structure with a face-centered cubic phase was produced in this study. The usage of 500°C as the lower limit in this study is justified due to the complete removal of the templating material as seen in the thermalgravimetric analysis studies. Furthermore, it was obtained that the largest surface area of nickel oxide synthesized using this technique is 48.024 m2/g with pore sizes of 19.843 nm. The usage of chitosan as a green template for the synthesis of nanoparticles has shown promising results which allows a more economical and sustainable approach for the fabrication of nanomaterials

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Ultrasound‐aided rapid and enhanced adsorption of anionic dyes from binary dye matrix onto novel hematite/polyaniline nanocomposite: Response surface methodology optimization

Deb

Debnath

Saha

2019

Applied Organom Chemis

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In recent times, polyaniline (PANI), a conducting polymer, has been studied widely for environmental remediation application due to its controllable electric conductivity with high surface area, which makes it a suitable adsorbent material. But lower mechanical stability of PANI is considered to be a serious drawback for its large‐scale industrial application. To improve the mechanical strength of PANI, in this study, hematite nanoparticles were impregnated onto PANI by oxidative polymerization method in order to fabricate a novel organometallic nanocomposite (hematite‐PANI‐NC). The hematite‐PANI‐NC was used as adsorbent for removal of methyl orange (MO) and eosin yellow (EY) dye from binary dye matrix under ultrasonic‐assisted adsorption. Excellent MO and EY dye removal (more than 98%) was observed from binary matrix at a wide solution pH from 2.0 to 6.0, and under ultrasound wave the adsorption equilibrium was achieved within 15 min only. Both MO and EY dyes adsorption experimental data strictly followed Langmuir isotherm, and maximum monolayer adsorption capacity of 126.58 mg/g and 112.36 mg/g was observed for MO and EY dye, respectively. The uptake mechanism of MO and EY dyes onto hematite‐PANI‐NC is governed by electrostatic interaction, π‐π bonding and hydrogen bonding between dye molecules and nanocomposite. Response surface methodology analysis reveals maximum MO and EY removal of 98.43% and 99.35% at optimum experimental conditions. This study implies that the hybrid organometallic material hematite‐PANI‐NC has high potential for quick and enhanced sono‐assisted uptake of anionic dyes from water near neutral solution pH.

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Synthesis and adsorption studies of NiO nanoparticles in the presence of H2acacen ligand, for removing Rhodamine B in wastewater treatment

Cited by 160 publications

References 39 publications

Highly effective adsorption of xanthene dyes (rhodamine B and erythrosine B) from aqueous solutions onto lemon citrus peel active carbon: characterization, resolving analysis, optimization and mechanistic studies

Highly effective adsorption of xanthene dyes (rhodamine B and erythrosine B) from aqueous solutions onto lemon citrus peel active carbon: characterization, resolving analysis, optimization and mechanistic studies

Synthesis and Characterization of NiO Nano‐Spheres by Templating on Chitosan as a Green Precursor

Ultrasound‐aided rapid and enhanced adsorption of anionic dyes from binary dye matrix onto novel hematite/polyaniline nanocomposite: Response surface methodology optimization

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