Impact of copper immobilization on dramatic conversion of inactive NiAlFeO<sub>4</sub> to an active catalyst for reduction of nitrophenols and a visible light photocatalyst for effective removal of organic contaminants from waste water

Manhas, Ujwal; Sharma, Sucheta; Singh, Sumit; Qadir, Irfan; Atri, Amit Kumar; Singh, Devinder

doi:10.1039/d3nj01388j

Cited by 3 publications

(1 citation statement)

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“…The cationic dyes, i.e., RhB (∼99% in 40 min) and MB (∼99% in 35 min), degraded faster compared to the anionic dye i.e., MO (∼99% in 70 min). This is due to the presence of negatively charged oxygen groups in CFO-6, which causes anionic dyes to electrostatically repel and inhibits the molecules of organic dye from migrating to the surface of the catalyst to be destroyed . Furthermore, as shown in Figure d, the deterioration of a ternary solution of dyes takes 60 min.…”

Section: Resultsmentioning

confidence: 99%

High-Performance Recyclable Magnetic CuFe_2–xCr_xO₄ Nanocatalysts for Facile Reduction of Nitrophenols and Photooxidative Degradation of Organic Dyes

Manhas,

Atri,

Sharma

et al. 2024

ACS Sustainable Resour. Manage.

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Remediating pollutants in water sources is essential for preserving and protecting our water resources. Water pollution can have severe environmental, economic, and public health consequences. Water scarcity for domestic purposes can eventually be addressed by improving wastewater management. In the present study, highly active and magnetically separable Cr-doped copper ferrites CuFe 2−x Cr x O 4 (x = 0, 0.2, 0.4, 0.6, 0.8, and 1) were synthesized via a sol−gel technique and employed for the conversion of nitrophenols to aminophenols and photooxidative deterioration of various dyes such as methyl orange (MO), rhodamine B (RhB), and methylene blue (MB), as well as their ternary solution (RhB + MO + MB). Powder X-ray diffraction investigation indicates that the prepared phases are well indexed in the Fd3̅ m space group except for CuFe 2 O 4 , which crystallizes in the I4 1 /amd space group. The M−H hysteresis loop results support the ferromagnetic behavior of the nanophases, which makes them magnetically separable. The optical-band-gap energies of prepared nanostructures were found to be in the range of 1.70−1.39 eV, which makes them appropriate and reliable photocatalysts. CuFe 2 O 4 was found to be the most efficient nanocatalyst toward the conversion of nitrophenols to aminophenols, while CuCrFeO 4 showed a maximum degradation efficiency for the deterioration of dyes. The kinetic models correctly explain both reduction and photodegradation processes using pseudo-first-order kinetics. Further, several recyclability runs demonstrated that the nanocatalysts were extremely stable and reusable. This study reflects the possibility of employing mesoporous nanocatalysts for practical applications in the treatment of wastewater.

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Section: Resultsmentioning

confidence: 99%

High-Performance Recyclable Magnetic CuFe_2–xCr_xO₄ Nanocatalysts for Facile Reduction of Nitrophenols and Photooxidative Degradation of Organic Dyes

Manhas,

Atri,

Sharma

et al. 2024

ACS Sustainable Resour. Manage.

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Preparation of Ag doped MgO for electrochemical sensing and degradation of the resorcinol

Dubey,

Singh,

Sharma

et al. 2023

Appl. Phys. A

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Synthesis of nano-crystalline K2NiF4-type phases La1+Sr1-CoO4 (x = 0.0, 0.2, and 0.5): Effect of mixed valence state of Co on structural, magnetic and photocatalytic properties

Atri,

Sharma,

Manhas

et al. 2024

Ceramics International

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Impact of copper immobilization on dramatic conversion of inactive NiAlFeO₄ to an active catalyst for reduction of nitrophenols and a visible light photocatalyst for effective removal of organic contaminants from waste water

Abstract: Due to their carcinogenic, mutagenic and poisonous nature, industrial wastes such as metals, dyes, polycyclic aromatic hydrocarbons, surfactants and pharmaceutical waste have become a major worldwide issue for human health....

Cited by 3 publications

References 96 publications

High-Performance Recyclable Magnetic CuFe_2–xCr_xO₄ Nanocatalysts for Facile Reduction of Nitrophenols and Photooxidative Degradation of Organic Dyes

High-Performance Recyclable Magnetic CuFe_2–xCr_xO₄ Nanocatalysts for Facile Reduction of Nitrophenols and Photooxidative Degradation of Organic Dyes

Preparation of Ag doped MgO for electrochemical sensing and degradation of the resorcinol

Synthesis of nano-crystalline K2NiF4-type phases La1+Sr1-CoO4 (x = 0.0, 0.2, and 0.5): Effect of mixed valence state of Co on structural, magnetic and photocatalytic properties

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Impact of copper immobilization on dramatic conversion of inactive NiAlFeO4 to an active catalyst for reduction of nitrophenols and a visible light photocatalyst for effective removal of organic contaminants from waste water

Abstract: Due to their carcinogenic, mutagenic and poisonous nature, industrial wastes such as metals, dyes, polycyclic aromatic hydrocarbons, surfactants and pharmaceutical waste have become a major worldwide issue for human health....

Cited by 3 publications

References 96 publications

High-Performance Recyclable Magnetic CuFe2–xCrxO4 Nanocatalysts for Facile Reduction of Nitrophenols and Photooxidative Degradation of Organic Dyes

High-Performance Recyclable Magnetic CuFe2–xCrxO4 Nanocatalysts for Facile Reduction of Nitrophenols and Photooxidative Degradation of Organic Dyes

Preparation of Ag doped MgO for electrochemical sensing and degradation of the resorcinol

Synthesis of nano-crystalline K2NiF4-type phases La1+Sr1-CoO4 (x = 0.0, 0.2, and 0.5): Effect of mixed valence state of Co on structural, magnetic and photocatalytic properties

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Impact of copper immobilization on dramatic conversion of inactive NiAlFeO₄ to an active catalyst for reduction of nitrophenols and a visible light photocatalyst for effective removal of organic contaminants from waste water

High-Performance Recyclable Magnetic CuFe_2–xCr_xO₄ Nanocatalysts for Facile Reduction of Nitrophenols and Photooxidative Degradation of Organic Dyes

High-Performance Recyclable Magnetic CuFe_2–xCr_xO₄ Nanocatalysts for Facile Reduction of Nitrophenols and Photooxidative Degradation of Organic Dyes