Photocatalytic degradation of crystal violet dye on the novel CuCr2O4/SnO2 hetero-system under sunlight

Lahmar, H.; Benamira, M.; Douafer, S.; Akika, F.Z.; Hamdi, M.; Avramova, I.; Trari, M.

doi:10.1016/j.ijleo.2020.165042

Cited by 32 publications

(7 citation statements)

References 39 publications

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“…24(a). According to Lahmar et al ., 114 a CuCr 2 O 4 /SnO 2 heterosystem exhibits no deterioration or corrosion after the third cycle and only exhibits a slight decrease in activity of less than 10%. Fig.…”

Section: Reusability Of Photocatalysts For CV Degradationmentioning

confidence: 98%

An overview of prominent factors influencing the photocatalytic degradation of cationic crystal violet dye employing diverse nanostructured materials

Shabna,

Singh,

Dhas

et al. 2024

J of Chemical Tech & Biotech

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Crystal violet (CV), a cationic dye, has been demonstrated to be a powerful carcinogen, a mitotic toxin and poisonous to mammalian cells such that the predominant presence of the dye invariably causes several effects of destruction to mankind and it necessitates a clarion call to do away with this nuisance before it can produce a snowball effect. The recent widespread reporting of the photocatalysis‐mediated degradation of CV as an emerging technique for removing this dangerous dye from aqueous mediums highlights its effectiveness. Numerous researchers have contributed substantially to describing how photocatalysis‐based nanomaterials could be used to degrade CV. The fundamentals and the factors that predominantly influence CV degradation are highlighted in this work. These factors include the nature of nanomaterials, catalyst concentration, dye dosage, pH of the solution in use, temperature and light intensity. Additionally, thorough kinetics and mechanistic descriptions are also included to give crucial insights into the light‐mediated reaction of CV. The present study's findings have the potential to alleviate practitioners and researchers of the burden of having to navigate through numerous studies under each category of parameters to get an exhaustive overview of all of the different variables that may affect the photocatalytic degradation of CV dye. In order to further enhance the photocatalytic degradation efficiency of CV, researchers can expand on this study by investigating novel strategies to lessen the impact of certain elements that adversely affect the photocatalytic reaction process. The potential prospects for extending the advancement of scientific study in this area are also explored. © 2024 Society of Chemical Industry (SCI).

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Section: Reusability Of Photocatalysts For CV Degradationmentioning

confidence: 98%

An overview of prominent factors influencing the photocatalytic degradation of cationic crystal violet dye employing diverse nanostructured materials

Shabna,

Singh,

Dhas

et al. 2024

J of Chemical Tech & Biotech

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“…These reactive superoxide/hydroxyl free radicals thus formed actively reacted with the structure of the CV dye and degraded the toxic dye into simpler, smaller, less harmful degraded products of H 2 O, CO 2 , etc. [54,55] The schematic illustration of the mechanism of the removal of CV dye by NiFe 2 O 4 NCs and Ni 1-x Co x Fe 2-y Cu y O 4 NCs photo-catalysts materials is given in Figure 15 as illustrated in Eqs. (12)(13)(14)(15)(16).…”

Section: Mechanism Of CV Dye Removalmentioning

confidence: 99%

Impact of Co and Cu co‐doping on the Structural, Electrical, Magnetic and Solar Light Driven Photo‐Catalytic Properties of NiFe₂O₄ Nano‐crystals for Crystal Violet Dye Removal

Bibi,

Jamshaid,

Iqbal

et al. 2024

ChemistrySelect

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Herein, we have synthesised cobalt (Co) and copper (Cu) co‐doped Ni‐ferrite Ni1‐xCoxFe2‐yCuyO4 nanocrystals (NCs) via the facile micro‐emulsion method. The materials were analysed for various physio‐chemical characterizations to investigate the co‐doping (Co and Cu) effects on magnetic, structural, electrical, photo‐catalytic properties. The structural analysis via Fourier Transform Infrared spectroscopy (FTIR) and X‐rays diffraction (XRD) showed the successful fabrication of Co and Cu co‐doped materials with cubic spinel geometry having a single phase, the crystallite size was observed in 15 to 24 nm range. The electrical response measured using current‐voltage (I–V) analysis showed good electrical features, the electrical resistivity declined from 6.85×107 Ohm.cm for un‐doped materials to 0.04×107 Ohm.cm for co‐doped materials, which was accredited due to the synergistic effects of Co and Cu metal cations in co‐doped Ni‐based ferrite structures. Magnetic investigation using VSM analysis showed increased saturation magnetization (Ms 31.32 to 50.75 emu/g) and coercivity (218.76 to 406.82 Oe) because of the higher magnetic responses of Co2+ions in the co‐doped spinel ferrite NCs. BET surface‐area analysis showed good porosity for co‐doped materials with an increased surface area of 52 to 104 m2/g on co‐doping. The Tauc's plot described the decline of band‐gap energies value (Egs) (1.99 eV) in co‐doped (x=y=0.56) materials as compared to (2.16 eV) of the un‐doped NiFe2O4 materials, which is due to more electrical responses of Co and Cu co‐dopant cations that possess higher energy levels, which can stabilize the charge carrier‘s species. Furthermore, the photo‐degradation using solar light showed good removal of crystal violet (CV) dye, which was almost 94.14 % by co‐doped material; however, by un‐doped material, it was 38.044 %. The scavenger experiment shows that the (OH⋅) hydroxyl radicals and (e−/h+) species play a prime role in the degradation of CV dye. Recycling and recoverability tests for five cycles’ exhibited outstanding stability of the photocatalyst with only 1.7 % losses in activity. Overall, our results showed that co‐doped Ni1‐xCoxFe2‐yCuyO4 NCs materials exhibited enhancement in the magnetic, electrical, photo‐catalytic properties and a decline in band‐gap energy values as compared to un‐doped NiFe2O4, which might have potential use in magnetic and electrical devices as well as solar‐driven photo‐catalyst materials for the remediation of environmental pollution.

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“…[20,21] Various nanomaterials were synthesized for CV dye degradation under UV light (10 nm-400 nm) and visible light (400 nm-700 nm). UV light active photocatalysts are TiO 2 , ZnO, [22] SnO 2 , [23] K 2 Ti 6 O 13 , [24] ZnTiO 3 , [25] rGO-ZnO-TiO 2 nanocomposite, [26] 2-D MoS 2 /TiO 2 , [2] and MWCNTs/Cd-ZnO, [17] whereas visible light active photocatalysts are Fe 2 O 3 , [27] Co and Fe doped LaCrO 3 perovskite, [28] Co 3 O 4quantum dots, [16] WO 3 -SBA-15 catalysts, [4] rGO@WO 3 , [29] H-ZIF-67/PDA/TiO 2 , [5] g-C 3 N 4 /ZIF-67, [30] BiVO 4 /FeVO 4 , [31] and rGO-Fe 3 O 4 -NiO hybrid nanocomposites. [32] Graphitic carbon nitride (g-C 3 N 4 ) is an n-type metal-free semiconductor with a band gap of 2.7 eV was first reported by Berzelius and Liebig in 1834.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Photocatalytic Performance of g‐C₃N₄@MnFe₂O₄ Nanocomposite for Crystal Violet Dye Degradation under Solar Light

Rathore,

Waghmare,

Rai

et al. 2023

ChemistrySelect

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Crystal violet (CV) dye has been used in the textile industry, as printing ink, biological stain, and antimicrobial agent. CV dye persists in water for a long time and poses a serious threat to humans and aquatic life. In this study, g‐C3N4, MnFe2O4 nanoparticles, and g‐C3N4@MnFe2O4 (80 : 20 wt %) nanocomposite were synthesized via thermal decomposition and chemical co‐precipitation routes. The crystallite size was found 36.31 nm and 30 nm for bare MnFe2O4 nanoparticle and g‐C3N4@MnFe2O4 nanocomposite respectively. The optical band gaps of MnFe2O4, g‐C3N4, and g‐C3N4@MnFe2O4 were 1.8 eV, 2.7 eV, and 2.4 eV, respectively. The photoluminescence intensity decreases in the following order: g‐C3N4>g‐C3N4@MnFe2O4 nanocomposite>MnFe2O4. The degradation efficiency of MnFe2O4, g‐C3N4, and g‐C3N4@MnFe2O4 nanocomposite was found to be 25.13 %, 58.11 %, and 98.42 % respectively, and followed first‐order kinetics. The value of the rate constant for g‐C3N4@MnFe2O4 was 0.022 min−1 which was around ten times higher than g‐C3N4 and MnFe2O4. By adding three scavengers, the degradation capacity of nanocomposite was decreased in the order AA (L‐ascorbic acid)>EDTA (ethylenediaminetetraacetic acid)>TBA (t‐butyl alcohol). A slight reduction in degradation efficiency was observed after five consecutive cycles. Thus, this new finding can be applied to the degradation of CV dye‐contaminated industrial wastewater under solar light.

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Photocatalytic degradation of crystal violet dye on the novel CuCr2O4/SnO2 hetero-system under sunlight

Cited by 32 publications

References 39 publications

An overview of prominent factors influencing the photocatalytic degradation of cationic crystal violet dye employing diverse nanostructured materials

An overview of prominent factors influencing the photocatalytic degradation of cationic crystal violet dye employing diverse nanostructured materials

Impact of Co and Cu co‐doping on the Structural, Electrical, Magnetic and Solar Light Driven Photo‐Catalytic Properties of NiFe₂O₄ Nano‐crystals for Crystal Violet Dye Removal

Enhanced Photocatalytic Performance of g‐C₃N₄@MnFe₂O₄ Nanocomposite for Crystal Violet Dye Degradation under Solar Light

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Photocatalytic degradation of crystal violet dye on the novel CuCr2O4/SnO2 hetero-system under sunlight

Cited by 32 publications

References 39 publications

An overview of prominent factors influencing the photocatalytic degradation of cationic crystal violet dye employing diverse nanostructured materials

An overview of prominent factors influencing the photocatalytic degradation of cationic crystal violet dye employing diverse nanostructured materials

Impact of Co and Cu co‐doping on the Structural, Electrical, Magnetic and Solar Light Driven Photo‐Catalytic Properties of NiFe2O4 Nano‐crystals for Crystal Violet Dye Removal

Enhanced Photocatalytic Performance of g‐C3N4@MnFe2O4 Nanocomposite for Crystal Violet Dye Degradation under Solar Light

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Product

Resources

About

Impact of Co and Cu co‐doping on the Structural, Electrical, Magnetic and Solar Light Driven Photo‐Catalytic Properties of NiFe₂O₄ Nano‐crystals for Crystal Violet Dye Removal

Enhanced Photocatalytic Performance of g‐C₃N₄@MnFe₂O₄ Nanocomposite for Crystal Violet Dye Degradation under Solar Light