Sonochemical synthesis of mesoporous ZrFe<sub>2</sub>O<sub>5</sub> and its application for degradation of recalcitrant pollutants

Chakma, Sankar; Moholkar, Vijayanand S.

doi:10.1039/c5ra06148b

Cited by 52 publications

(23 citation statements)

References 54 publications

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“…Overall, from XRD data analysis, it could be generalized that lower calcination temperature (i.e., 4008C and 5008C) would result in smaller CuO nanoparticles and higher calcination temperature (i.e., 6008C and 7008C) would result in larger CuO nanoparticles. One reason that could be attributed to higher average crystalline size with higher calcination temperature was agglomeration of the formed particles due to high surface activity of particles at nanoscale [42]. Another reason would be the recrystallization, aggregation and growth of the particles at higher temperature leading to larger sized CuO as reported by researchers [43][44][45].…”

Section: D5mentioning

confidence: 88%

Effect of ultrasound power and calcination temperature on the sonochemical synthesis of copper oxide nanoparticles for textile dyes treatment

Saravanan

Sivasankar

2015

Env Prog and Sustain Energy

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Copper oxide (CuO) nanoparticles were synthesized by sonochemical technique using copper nitrate trihydrate and ammonium carbonate as precursors in the presence of polyethylene glycol (PEG). The reagents aqueous solution are exposed to ultrasound at different ultrasound power of 44, 66, 88, 110, and 132 W. The precipitated product was calcined at the temperatures of 4008C, 5008C, 6008C, and 7008C. The size, structure, and morphology of calcined CuO nanoparticles were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), and energydispersive X-ray spectroscopy (EDAX). From the XRD observation, it is evident that the high purity CuO nanoparticles ranging from approximately 14 to approximately 54 nm were obtained. Additionally, SEM and EDAX investigation revealed that its structure and particle size are strongly dependent on the calcination temperature than ultrasound power. Most of the CuO nanoparticles formed were spherical in shape. Further, the application of the synthesized CuO nanoparticles toward the treatment of textile organic dyes such as Reactive Black 5 and Basic Blue 3 showed the synthesized CuO was highly effective in degradation of the environmental pollutants.

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Section: D5mentioning

confidence: 88%

Effect of ultrasound power and calcination temperature on the sonochemical synthesis of copper oxide nanoparticles for textile dyes treatment

Saravanan

Sivasankar

2015

Env Prog and Sustain Energy

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“…This technique is based on the cavitation bubbles generated in a liquid by sound waves, which causes changes in the reaction medium and is generally associated with the use of ultrasonic sound frequencies. Some important points of the sonochemical route is that it is carried out as a one‐pot synthesis, mild operating conditions, low energy requirement, and use of safe chemicals . The sonochemical method is used due to the controllable reaction conditions and high reaction rate, obtaining materials with improved photocatalytic properties …”

Section: Introductionmentioning

confidence: 99%

“…Some important points of the sonochemical route is that it is carried out as a one-pot synthesis, mild operating conditions, low energy requirement, and use of safe chemicals. 17 The sonochemical method is used due to the controllable reaction conditions and high reaction rate, obtaining materials with improved photocatalytic properties. 18,19 Therefore, in this work CaBi 6 O 10 nanoplates were synthesized by a sonochemical method in aqueous solution.…”

Section: Introductionmentioning

confidence: 99%

Sonochemical synthesis of CaBi₆O₁₀nanoplates: photocatalytic degradation of organic pollutants (ciprofloxacin and methylene blue) and oxidizing species study (h⁺, OH·, H₂O₂and O₂^•-)

Montalvo-Herrera

Sánchez-Martínez

Torres-Martı́nez

2017

J. Chem. Technol. Biotechnol

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BACKGROUND CaBi6O10 nanoplates were synthesized by a sonochemical method using a high‐power ultrasonic processor. Also, the CaBi6O10 was synthesized by an impregnation‐calcination method in order to compare the effect of the synthesis method on the photocatalytic activity of the photocatalyst. In addition, the role of the oxidizing species such as h+, OH•, H2O2 and O2•‐ was evaluated during the photocatalytic degradation of ciprofloxacin (CPFX) and methylene blue (MB). RESULTS The sample synthesized sonochemically showed a morphology of nanoplates with a thickness around 50 nm and length 1.5 µm. Also, the sample showed the best photocatalytic activity (i.e. the sample with the highest surface area and a plate‐like morphology), degrading CPFX by 56% and MB by 67%. The main species involved in the degradation of CPFX were the OH· radicals, and in the degradation of MB it was H2O2. CONCLUSIONS CaBi6O10 nanoplates were prepared successfully by a sonochemical method, showing the best photocatalytic activity in the degradation of CPFX and MB, mainly attributed to the morphology of the nanoplates. In addition, it was observed that the main species involved in the degradation of CPFX were the OH· radicals and in the degradation of MB, H2O2. © 2017 Society of Chemical Industry

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“…Further increment in catalyst amount, adds the numbers of accessible active surface sites of iron in the reaction's environment, as a result it would lead to raise DE% . According to the consequence results, excess catalyst dosage would decrease elimination of pollutant owing to decrease accessible surface ferric and ferrous ions and reaction of ferrous ions with hydroxyl radicals as well .…”

Section: Resultsmentioning

confidence: 99%

Pilot plant fluidized‐bed reactor for degradation of basic blue 3 in heterogeneous fenton process in the presence of natural magnetite

Aghdasinia

Khataee

Sheikhi

et al. 2017

Env Prog and Sustain Energy

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Degradation of basic blue 3 (BB3) was studied in a pilot scale fluidized‐bed reactor (FBR) utilizing natural magnetite (NM) nanostructures for heterogeneous Fenton process. The morphology, structure, and specific surface area of NM nanostructure were determined employing scanning electron microscopy, X‐ray diffraction, X‐ray photoelectron spectroscopy (XPS), and Brunauer‐Emmett‐Teller (BET) methods, respectively. High mass transfer coefficients, continuous operating condition and high reaction rates due to suitable and sufficient contact of phases, can be noted as significant advantages of FBR. Influences of factors, which affect performance of fluidized‐bed heterogeneous Fenton process (NM/H2O2), for instances initial concentration of contaminant and H2O2, initial pH of solution and dosage of catalyst were investigated. At the desired operational condition, pH 5, 4 mM of H2O2, and 2.27 g/L of NM after 190 min, the degradation percentage of 84%. Excess amounts of catalyst dosage and hydrogen peroxide tend to scavenge hydroxyl radicals by H2O2 molecules. Whereas low initial concentration of the dye and low initial solution pH, enhanced the BB3 degradation. Reusability of NM through five successive experiments, demonstrated the acceptable proficiency of NM as catalyst for oxidative BB3 degradation. © 2017 American Institute of Chemical Engineers Environ Prog, 36: 1039–1048, 2017

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Sonochemical synthesis of mesoporous ZrFe₂O₅ and its application for degradation of recalcitrant pollutants

Cited by 52 publications

References 54 publications

Effect of ultrasound power and calcination temperature on the sonochemical synthesis of copper oxide nanoparticles for textile dyes treatment

Effect of ultrasound power and calcination temperature on the sonochemical synthesis of copper oxide nanoparticles for textile dyes treatment

Sonochemical synthesis of CaBi₆O₁₀nanoplates: photocatalytic degradation of organic pollutants (ciprofloxacin and methylene blue) and oxidizing species study (h⁺, OH·, H₂O₂and O₂^•-)

Pilot plant fluidized‐bed reactor for degradation of basic blue 3 in heterogeneous fenton process in the presence of natural magnetite

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Sonochemical synthesis of mesoporous ZrFe2O5 and its application for degradation of recalcitrant pollutants

Cited by 52 publications

References 54 publications

Effect of ultrasound power and calcination temperature on the sonochemical synthesis of copper oxide nanoparticles for textile dyes treatment

Effect of ultrasound power and calcination temperature on the sonochemical synthesis of copper oxide nanoparticles for textile dyes treatment

Sonochemical synthesis of CaBi6O10nanoplates: photocatalytic degradation of organic pollutants (ciprofloxacin and methylene blue) and oxidizing species study (h+, OH·, H2O2and O2•-)

Pilot plant fluidized‐bed reactor for degradation of basic blue 3 in heterogeneous fenton process in the presence of natural magnetite

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Sonochemical synthesis of mesoporous ZrFe₂O₅ and its application for degradation of recalcitrant pollutants

Sonochemical synthesis of CaBi₆O₁₀nanoplates: photocatalytic degradation of organic pollutants (ciprofloxacin and methylene blue) and oxidizing species study (h⁺, OH·, H₂O₂and O₂^•-)