Preparation and characterization of nano SiO2@CeO2 extracted from blast furnace slag and uranium extraction waste for wastewater treatment

Dhmees, Abdelghaffar S.; Rashad, Ahmed; Eliwa, Ahmed A.; Zawrah, M.F.

doi:10.1016/j.ceramint.2019.01.014

Cited by 40 publications

(8 citation statements)

References 42 publications

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“…One of the highly catalytic and adsorptive activities of CeO 2 is due to the facile Ce 4+ /Ce 3+ redox change. Nanosized CeO 2 with a high specific area was fabricated and applied for removal of both inorganic and organic pollutants. − One evident disadvantage of CeO 2 is its high-cost nanomaterial compared with common metal oxides. On the other hand, silica is one of the most widely used materials in various applications including environmental technology .…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Novel Hybridized CeO₂@SiO₂ Nanoparticles Based on Rice Husk and Their Application in Antibiotic Removal

Pham

et al. 2021

Langmuir

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This work aims to synthesize a core–shell material of CeO2@SiO2 based on rice husk as a novel hybridized adsorbent for antibiotic removal. The phase structures of CeO2@SiO2 and CeO2 nanoparticles that were fabricated by a simple procedure were examined by X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDS), and Fourier transform infrared (FT-IR) spectroscopy, while their interfacial characterizations were performed by scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), the Brunauer–Emmett–Teller (BET) method, and ζ-potential measurements. The removal efficiency of the antibiotic amoxicillin (AMX) using CeO2@SiO2 nanoparticles was much greater than that using SiO2 and CeO2 materials in solutions of different pH values. The optimum conditions for AMX removal using CeO2@SiO2 including contact time and adsorbent dosage were 120 min and 5 mg/mL, respectively. The maximum AMX removal using CeO2@SiO2 reached 100% and the adsorption capacity was 12.5 mg/g. Adsorption isotherms of AMX onto CeO2@SiO2 were fitted by Langmuir, Freundlich, and two-step adsorption models, while the adsorption kinetics of AMX achieved a better fit by the pseudo-second-order model than the pseudo-first-order model. The electrostatic and nonelectrostatic interactions between the zwitterionic form of AMX and the positively charged CeO2@SiO2 surface were controlled by adsorption. The effects of different organics such as humic acid, ionic surfactants, and pharmaceutical substances on AMX removal using CeO2@SiO2 were also thoroughly investigated. The high AMX removal efficiencies of about 75% after four regenerations and about 70% from an actual water sample demonstrate that CeO2@SiO2-based rice husk is a hybrid nanomaterial for antibiotic removal from water environments.

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Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Novel Hybridized CeO₂@SiO₂ Nanoparticles Based on Rice Husk and Their Application in Antibiotic Removal

Pham

et al. 2021

Langmuir

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“…The procedure was followed Dhmees et al [1] with the modifications. First of all, 2.0 g SiO2 fabricated from was dispersed in 100 mL ethanol.…”

Section: Synthesis Of Ceo2-coated Sio2 Based On Rice Huskmentioning

confidence: 99%

“…Metal oxides are important materials that are widely used in chemical engineering, such as adsorption technology. Cerium oxide (CeO2) is high performance adsorbent for for removal of various pollutants [1][2][3]. However, due to high cost material, CeO2 is not common metal for environmental remediation.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, the material is based on the combination between CeO2 and SiO2 to form a new material as CeO2-coated SiO2 attracted intense studies [5,6].. Different methods have been investigated to synthesize CeO2-coated SiO2,, for example chemical precipitation [1,6], soft fabrication in the presence of surface active agent [7], sol-gel [5], solvothermal [8] and dispersion with impregnation [9]. It implies that the chemical precipitation is the one of the simplest method to fabricate CeO2-coated SiO2.…”

Section: Introductionmentioning

confidence: 99%

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Adsorption characteristics of amoxicillin antibiotic on CeO<sub>2</sub>-coated SiO<sub>2</sub> nanomaterials

Le¹,

Pham²,

Nguyen³

et al. 2020

Vietnam j. catal. adsorp.

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This study investigated adsorption of beta-lactam antibiotic Amoxicillin (AMX) on a new material of cerium oxide-coated nanosilica (CeO2-coated SiO2). The CeO2-coated SiO2 based on rice husk, was characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Adsorption behaviors of AMX on CeO2-coated SiO2 at different pH and ionic strength were thoroughly studied. The highest removal of AMX using CeO2-coated SiO2 reached 99.26 % at pH 4 while the maximum adsorption capacity was found to be greater than 11.0 mg/g. Adsorption isotherms of AMX on CeO2-coated SiO2 at different ionic strength were in accordance with Freundlich model. Adsorption of amphoteric AMX species on CeO2-coated SiO2 increased with a decrease of salt concentration indicating that adsorption was controlled by both electrostatic and non-electrostatic interactions

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“…Wastewater usually covers a huge amount of organic pollutants (such as reactive dyes, pesticides and antibiotics) which is adverse things on aquatic ecologies equilibrium and human healthiness. The textile, paper-making, cosmetics, food industries and dye houses have used countless organic dyes which are the prime causes for the contamination of environmental wastewater due to its toxicity and non-biodegradability is a vital environmental issue (Dhmees et al 2019). Various traditional systems, such as electrochemical oxidation, membrane filtration, adsorption, chlorination, reverse osmosis, and photocatalysis, have been agreed to treat the harmful dyes covering wastewater.…”

Section: Introductionmentioning

confidence: 99%

Hydrothermal fabrication and characterization of novel CeO2/PbWO4 nanocomposite for enhanced visible-light photocatalytic performance

Selvi¹,

Rajendran

Jayamani³

2021

Appl Water Sci

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In this revision, a series of novel visible-light-driven (VLD) CeO2/PbWO4 nanocomposites (NCs) were effectively fabricated by facile hydrothermal preparation way. The UV–Vis absorption spectra exposed that CeO2 NPs prolonged the adsorption edge of the CeO2/PbWO4 composite to the extensive visible region, which allied to decreases of the bandgap. As-prepared CeO2/PbWO4 NCs revealed superior photocatalytic action under visible-light and could degrade the Methylene Blue (MB) dye solution in 140 min. The photodegradation efficacy of CeO2/PbWO4 NCs was improved catalytic activity, which is around 1.45 and 2.7 times that of CeO2 and PbWO4 nanoparticles (NPs) individually. Besides, the CeO2/PbWO4 catalysts display notable stability and reusability performance in four succeeding cycles. The development in the photocatalytic enactment of combined CeO2/PbWO4 nanocomposite could be recognized not only to the sturdy visible-light absorption responses and separating the photoexcited electron–hole pairs. Also, the plausibly systematic illumination of charge transference and exploitation of reactive species for superior photocatalytic action in visible-light have been discussed. It is projected that the CeO2/PbWO4 NCs could be used as effective photocatalysts for promising applications for environmental wastewater refinement.

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Preparation and characterization of nano SiO2@CeO2 extracted from blast furnace slag and uranium extraction waste for wastewater treatment

Cited by 40 publications

References 42 publications

Synthesis and Characterization of Novel Hybridized CeO₂@SiO₂ Nanoparticles Based on Rice Husk and Their Application in Antibiotic Removal

Synthesis and Characterization of Novel Hybridized CeO₂@SiO₂ Nanoparticles Based on Rice Husk and Their Application in Antibiotic Removal

Adsorption characteristics of amoxicillin antibiotic on CeO<sub>2</sub>-coated SiO<sub>2</sub> nanomaterials

Hydrothermal fabrication and characterization of novel CeO2/PbWO4 nanocomposite for enhanced visible-light photocatalytic performance

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Preparation and characterization of nano SiO2@CeO2 extracted from blast furnace slag and uranium extraction waste for wastewater treatment

Cited by 40 publications

References 42 publications

Synthesis and Characterization of Novel Hybridized CeO2@SiO2 Nanoparticles Based on Rice Husk and Their Application in Antibiotic Removal

Synthesis and Characterization of Novel Hybridized CeO2@SiO2 Nanoparticles Based on Rice Husk and Their Application in Antibiotic Removal

Adsorption characteristics of amoxicillin antibiotic on CeO<sub>2</sub>-coated SiO<sub>2</sub> nanomaterials

Hydrothermal fabrication and characterization of novel CeO2/PbWO4 nanocomposite for enhanced visible-light photocatalytic performance

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Product

Resources

About

Synthesis and Characterization of Novel Hybridized CeO₂@SiO₂ Nanoparticles Based on Rice Husk and Their Application in Antibiotic Removal

Synthesis and Characterization of Novel Hybridized CeO₂@SiO₂ Nanoparticles Based on Rice Husk and Their Application in Antibiotic Removal