Highly efficient visible light photocatalysis of Ni  Zn  Fe2O4 (x= 0, 0.3, 0.7) nanoparticles: Diclofenac degradation mechanism and eco-toxicity

Mohan, Harshavardhan; Sathya, Pavithra Muthukumar; Vadivel, S.; Ha, Ga Hyeon; Oh, Hyeon Seung; Kim, Gitae; Kamala‐Kannan, Seralathan; Shin, Taeho

doi:10.1016/j.chemosphere.2022.134699

Cited by 20 publications

(11 citation statements)

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“…High resolution XPS spectrum of O 1s was shown in Figure 3(b). The peaks at 529.8, 530.7, 531.9 eV are attributed to the 1 s spectra of lattice O 2− , surface species, adsorbed oxygen species, respectively [36,37] . Fe 2p spectra (Figure 3(c)) displays two prominent peaks at 711.6 and 725.1 eV.…”

Section: Resultsmentioning

confidence: 99%

“…The weak peak at 720.8 eV is attributed to the satellite Fe 3+ [36] . In Ni 2p spectra, the two main peaks located at 854.9 and 872.6 eV and a strong satellite peak at 861.8 eV between them are assigned to Ni 2p 3/2 and Ni 2p 1/2 , respectively [36] . The analysis of Zn 2p spectra (Figure 3(e)) reveals the presence of two sharp peaks at 1021.6 and 1044.5 eV.…”

Section: Resultsmentioning

confidence: 99%

“…These peaks are corresponding to Fe 3 + 2p 3/2 and Fe 3 + 2p 1/2 , respectively. [36] The weak peak at 720.8 eV is attributed to the satellite Fe 3 + . [36] In Ni 2p spectra, the two main peaks located at 854.9 and 872.6 eV and a strong satellite peak at 861.8 eV between them are assigned to Ni 2p 3/2 and Ni 2p 1/2 , respectively.…”

Section: X-ray Photoelectron Spectroscopy (Xps)mentioning

confidence: 99%

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Adsorptive Remediation of Hazardous Crystal Violet Dye using Ni_1‐xZn_xFe₂O₄ Magnetic Nanocomposites

et al. 2022

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Crystal violet (CV) dye is one of the most poisonous colors primarily produced in the textile industry. In the current study, the co-precipitation assisted ultrasonic radiation method was used to synthesized Ni 1-x Zn x Fe 2 O 4 magnetic nanoparticles for the CV dye removal from aqueous solutions. The adsorbents were characterized by vibrating specimen magnetometer (VSM), X-ray diffraction (XRD), High resolution transmission electron microscope (HRTEM), X-ray photoelectron spectroscopy (XPS), Fourier transform infrared (FTIR), and nitrogen sorption analysis. XRD confirmed the successful synthesis of Ni 1-x Zn x Fe 2 O 4 single phase with a characteristic diffraction (311) peak at 2θ = 35.5°. XPS analysis proved the successful substitution of Ni 2 + by Zn 2 + ions in the spinel structure. N 2 sorption revealed that, the prepared adsorbent exhibited a mesoporous structure of slit shaped and narrow entrances, especially at high annealing temperatures. Results revealed that the magnetic Ni 0.1 Zn 0.9 Fe 2 O 4 nano adsorbent offered a maximum adsorption capacity of 473.9 mg g À 1 at pH 10.0, which is significantly greater than that of the other noted for CV removal. In addition, ferromagnetic nature was observed by Ni 0.5 Zn 0.5 Fe 2 O 4 with a saturation magnetization value of 60.1 emg/g. Equilibrium and kinetic studies demonstrated that, the adsorption is of chemical nature and controlled with pore and film diffusion. Finally, we concluded that Ni 1-x Zn x Fe 2 O 4 can be utilized as a potential magnetic composite for the purification of CV contaminated water.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: X-ray Photoelectron Spectroscopy (Xps)mentioning

confidence: 99%

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Adsorptive Remediation of Hazardous Crystal Violet Dye using Ni_1‐xZn_xFe₂O₄ Magnetic Nanocomposites

et al. 2022

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“…MnON/RGO(1:3) has the highest BET surface area, clearly implying its superior photocatalytic efficiency over other materials. 39,40 3.2. Photocatalytic Water Splitting.…”

Section: Resultsmentioning

confidence: 99%

“…As summarized in Table the BET surface areas of MnON, RGO, and MnON/RGO nanocomposites of different compositions (1:1, 1:2, and 1:3) were measured as 112, 419, 458, 469, and 481 m 2 /g, respectively. MnON/RGO(1:3) has the highest BET surface area, clearly implying its superior photocatalytic efficiency over other materials. , …”

Section: Resultsmentioning

confidence: 99%

Visible-Light Photocatalytic Water Splitting and Norfloxacin Degradation by Reduced Graphene Oxide-Coupled MnON Nanospheres

Mohan

Vadivel

Sathya³

et al. 2022

ACS Appl. Energy Mater.

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Photocatalytic water splitting has gained considerable attention owing to the sustainable nature of hydrogen as a clean energy source alternative to fossil fuels. In this study, nanocomposites consisting of manganese oxynitride and reduced graphene oxide were synthesized by the combined involvement of a solvothermal process and Hummer’s method and examined for their photocatalytic applications for water splitting hydrogen production and degradation of norfloxacin as a model pollutant. Spectroscopic and structural analyses showed successful formation of the stable composite in which manganese oxynitride nanoparticles are decorated on graphene sheets. With increasing content of graphene oxide in the composite, it showed the enhanced photocatalytic efficiency in water splitting hydrogen evolution. This is well explained by the large surface area, more light absorption, and interfacial charge transfer in the composite photocatalyst. The hydrogen evolution rates of MnON nanoparticles and MnON/RGO composites of mass ratios 1:1, 1:2, and 1:3 were measured as 250.1, 456.2, 543.6, and 708.5 μmol g–1 min–1, respectively, and the oxygen evolution rates were measured as 129.0, 229.4, 273.4, and 354.6 μmol g–1 min–1, respectively, suggesting the important roles of reduced graphene oxide. The photocatalysts also demonstrated enhanced stability and recyclability after multiple uses.

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PdS Coupled Nb₂O₅ Superstructure for Photocatalytic Overall Water Splitting

et al. 2023

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An efficient approach to resolve the current energy crisis is the photocatalytic production of hydrogen that is renewable and readily available from water and solar energy. In this study, we prepared nanocomposites by coupling PdS nanodisks on selfassembled Nb 2 O 5 superstructures and demonstrated them as an efficient water splitting photocatalyst for oxygen and hydrogen production. Various characterization techniques were employed to examine the physical and chemical properties and advantages of the Nb 2 O 5 /PdS nanocomposite over bare Nb 2 O 5 superstructure and PdS nanoparticles. The synthesized nanocomposite showed a hydrogen evolution rate of 665 μmol g À 1 min À 1 and oxygen evolution rate of 211 μmol g À 1 min À 1 , which is twice as high as that of Nb 2 O 5 superstructure and three times higher than that of PdS nanoparticles. The composite survived without any structural deterioration, even after six treatment cycles, thereby indicating its practical applicability.

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Highly efficient visible light photocatalysis of Ni Zn Fe2O4 (x= 0, 0.3, 0.7) nanoparticles: Diclofenac degradation mechanism and eco-toxicity

Cited by 20 publications

References 42 publications

Adsorptive Remediation of Hazardous Crystal Violet Dye using Ni_1‐xZn_xFe₂O₄ Magnetic Nanocomposites

Adsorptive Remediation of Hazardous Crystal Violet Dye using Ni_1‐xZn_xFe₂O₄ Magnetic Nanocomposites

Visible-Light Photocatalytic Water Splitting and Norfloxacin Degradation by Reduced Graphene Oxide-Coupled MnON Nanospheres

PdS Coupled Nb₂O₅ Superstructure for Photocatalytic Overall Water Splitting

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Highly efficient visible light photocatalysis of Ni Zn Fe2O4 (x= 0, 0.3, 0.7) nanoparticles: Diclofenac degradation mechanism and eco-toxicity

Cited by 20 publications

References 42 publications

Adsorptive Remediation of Hazardous Crystal Violet Dye using Ni1‐xZnxFe2O4 Magnetic Nanocomposites

Adsorptive Remediation of Hazardous Crystal Violet Dye using Ni1‐xZnxFe2O4 Magnetic Nanocomposites

Visible-Light Photocatalytic Water Splitting and Norfloxacin Degradation by Reduced Graphene Oxide-Coupled MnON Nanospheres

PdS Coupled Nb2O5 Superstructure for Photocatalytic Overall Water Splitting

Contact Info

Product

Resources

About

Adsorptive Remediation of Hazardous Crystal Violet Dye using Ni_1‐xZn_xFe₂O₄ Magnetic Nanocomposites

Adsorptive Remediation of Hazardous Crystal Violet Dye using Ni_1‐xZn_xFe₂O₄ Magnetic Nanocomposites

PdS Coupled Nb₂O₅ Superstructure for Photocatalytic Overall Water Splitting