Nickel doped zinc oxide with improved photocatalytic activity for Malachite Green Dye degradation and parameters affecting the degradation

Devi, K. Nomita; Devi, Sh. Anju; Singh, Wazir; Singh, K. B.

doi:10.1007/s10854-021-05545-x

Cited by 35 publications

(12 citation statements)

References 41 publications

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“…In 2021, Devi et al synthesized Ni-doped ZnO (Zn 1-x Ni x O (x = 0.00, 0.02, 0.04, 0.06, 0.08, 0.10)) in variable doping ratios using facile coprecipitation method for efficient photocatalytic degradation of malachite green dye. 319 Various studies like pH dependency, catalyst amount, and dye concentration were carried out to find the optimum condition for the degradation. The facile doping of Ni atoms after replacement of Zn atoms in the ZnO lattice without distortion of wurtzite structure was concluded when no additional peak for Ni or its oxide was observed in the XRD patterns shown in Figure 12A.…”

Section: Binary Oxidesmentioning

confidence: 99%

Recent progress in defect‐engineered metal oxides for photocatalytic environmental remediation

Sharma,

Sajwan,

Gouda

et al. 2024

Photochem & Photobiology

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Rapid industrial advancement over the last few decades has led to an alarming increase in pollution levels in the ecosystem. Among the primary pollutants, harmful organic dyes and pharmaceutical drugs are directly released by industries into the water bodies which serves as a major cause of environmental deterioration. This warns of a severe need to find some sustainable strategies to overcome these increasing levels of water pollution and eliminate the pollutants before being exposed to the environment. Photocatalysis is a well‐established strategy in the field of pollutant degradation and various metal oxides have been proven to exhibit excellent physicochemical properties which makes them a potential candidate for environmental remediation. Further, with the aim of rapid industrialization of photocatalytic pollutant degradation technology, constant efforts have been made to increase the photocatalytic activity of various metal oxides. One such strategy is the introduction of defects into the lattice of the parent catalyst through doping or vacancy which plays a major role in enhancing the catalytic activity and achieving excellent degradation rates. This review provides a comprehensive analysis of defects and their role in altering the photocatalytic activity of the material. Various defect‐rich metal oxides like binary oxides, perovskite oxides, and spinel oxides have been summarized for their application in pollutant degradation. Finally, a summary of existing research, followed by the existing challenges along with the potential countermeasures has been provided to pave a path for the future studies and industrialization of this promising field.

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Section: Binary Oxidesmentioning

confidence: 99%

Recent progress in defect‐engineered metal oxides for photocatalytic environmental remediation

Sharma,

Sajwan,

Gouda

et al. 2024

Photochem & Photobiology

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“…This is further supported by the observation that the photodegradation e ciency is signi cantly higher for the Ni-doped catalyst (98.96%) than for the undoped catalyst (83%). Ni-doped catalyst improves photodegradation by absorbing more visible light, preventing electron-hole recombination, and increasing the number of active sites [15].…”

Section: Doping Effect On Photodegradationmentioning

confidence: 99%

Investigation of photocatalytic activity of nickel-doped manganese aluminum ferrite nanoparticles for rhodamine b degradation under visible light

Yasar

2023

Preprint

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Nickel-doped manganese aluminum ferrite NiXMn1−XAl0.5Fe1.5O4 (X = 0,0.3) nanoparticles were synthesized via the Sol-gel method. XRD showed the spinel ferrite structure with average crystallite sizes of 30.66 to 39.69 nm. FTIR confirmed metal-oxygen bonds. SEM revealed the surface morphology and particle sizes of 75–95 nm. EDX confirmed the elemental composition. BET analysis determined the surface area of 13.43 m2/g for undoped and 28.38 m2/g for Ni-doped ferrite. The band gap decreases from 2.4 to 2.2 by doping nickel. Achieving 98.96% degradation of 10 mg/L Rhodamine B within 120 min under visible light irradiation was accomplished using a catalyst dose of 0.1 g/L at pH 7 and 20°C with a light intensity of 100 W. The photodegradation kinetics followed a first-order reaction. Hydroxyl radicals were identified as the major reactive species responsible for dye degradation. The nickel-doped ferrite nanoparticles exhibited efficient and stable photocatalytic performance for Rhodamine B removal from wastewater under visible light. Photocatalytic performance for Rhodamine B removal from wastewater under visible light.

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“…However, the rapid recombination of the electron–hole pair in ZnO strongly influences the photocatalytic activity [ 16 , 17 ]. Studies have shown that the inclusion of metal ions into the ZnO crystalline structure can delay the recombination of the electron–hole pair and contribute to the photocatalytic activity of this material [ 17 , 18 , 19 , 20 ]. Different studies proved that ZnO doped with transition metal ions presents a satisfactory photocatalytic response in recalcitrant compounds.…”

Section: Introductionmentioning

confidence: 99%

Photoresponsive Activity of the Zn0.94Er0.02Cr0.04O Compound with Hemisphere-like Structure Obtained by Co-Precipitation

et al. 2023

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In this work, a ZnO hemisphere-like structure co-doped with Er and Cr was obtained by the co-precipitation method for photocatalytic applications. The dopant’s effect on the ZnO lattice was investigated using X-ray diffraction, Raman, photoluminescence, UV-Vis and scanning electron microscopy/energy dispersive spectroscopy techniques. The photocatalytic response of the material was analyzed using methylene blue (MB) as the model pollutant under UV irradiation. The wurtzite structure of the Zn0.94Er0.02Cr0.04O compound presented distortions in the lattice due to the difference between the ionic radii of the Cr3+, Er3+ and Zn2+ cations. Oxygen vacancy defects were predominant, and the energy competition of the dopants interfered in the band gap energy of the material. In the photocatalytic test, the MB degradation rate was 42.3%. However, using optimized H2O2 concentration, the dye removal capacity reached 90.1%. Inhibitor tests showed that •OH radicals were the main species involved in MB degradation that occurred without the formation of toxic intermediates, as demonstrated in the ecotoxicity assays in Artemia salina. In short, the co-doping with Er and Cr proved to be an efficient strategy to obtain new materials for environmental remediation.

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Nickel doped zinc oxide with improved photocatalytic activity for Malachite Green Dye degradation and parameters affecting the degradation

Cited by 35 publications

References 41 publications

Recent progress in defect‐engineered metal oxides for photocatalytic environmental remediation

Recent progress in defect‐engineered metal oxides for photocatalytic environmental remediation

Investigation of photocatalytic activity of nickel-doped manganese aluminum ferrite nanoparticles for rhodamine b degradation under visible light

Photoresponsive Activity of the Zn0.94Er0.02Cr0.04O Compound with Hemisphere-like Structure Obtained by Co-Precipitation

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