ZnMn2O4 nanostructures: Synthesis via two different chemical methods, characterization, and photocatalytic applications for the degradation of new dyes

Sobhani, Azam; Alinavaz, Samira

doi:10.1016/j.heliyon.2023.e21979

Cited by 14 publications

(3 citation statements)

References 52 publications

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“…Furthermore, the SnO 2 /BiOBr-4 composite exhibits the widest range of light absorption, suggesting that its light absorption performance is better, which is beneficial to photocatalytic. The band gap energy (Eg) of the sample can be obtained by combining UV-vis DRS and the formula αhν = (hν-E g ) 1/2 , [24][25][26][27] as shown in Figure 5 The light absorption performance of SnO 2 /BiOBr was compared with that of the binary complex composed of other compounds combined with BiOBr, and the results were shown in Table 1. Compared with several common BiOBr-based binary complexes, SnO 2 /BiOBr-4 has the best light absorption performance, which may be related to the superior electrical conductivity of SnO 2 .…”

Section: Uv-vis Drs Analysismentioning

confidence: 99%

Hydrothermal Synthesis, Formation Mechanism and Photocatalytic Activity of SnO₂/BiOBr

Xu,

Gao,

Jin

et al. 2024

ChemistrySelect

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SnO2/BiOBr photocatalytic materials were successfully synthesized by hydrothermal method with BiOBr as the precursor. X‐ray diffraction studies confirmed that BiOBr and SnO2 were successfully combined. After characterization, we proposed a possible formation mechanism for SnO2/BiOBr. The degradation experiment showed that the degradation rate of norfloxacin using SnO2/BiOB‐4 reached 85.9 %, which was approximately 50 and 65 percentage points higher than that of pure BiOBr and SnO2, respectively. The reaction rate was 4.3 times that of BiOBr. Based on the analysis of the degradation mechanism, the improved photocatalytic performance may be attributed to the optimized energy band structure resulting from the combination of the two monomers. This promotes the effective separation of photogenerated electrons and holes, leading to the generation of more active substances such as ⋅O2− and h+. As a result, the oxidation capacity is enhanced.

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Section: Uv-vis Drs Analysismentioning

confidence: 99%

Hydrothermal Synthesis, Formation Mechanism and Photocatalytic Activity of SnO₂/BiOBr

Xu,

Gao,

Jin

et al. 2024

ChemistrySelect

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“…The n-type ZnO and the p-type CuO semiconductors are well-known and strong candidates for photocatalysts for wastewater treatment [28,29]. In the same context, CuMn 2 O 4 , as a manganese-based ternary metal oxide, has shown potential photocatalytic characteristics for the removal of organic pollutants in wastewater [30,31]. In view of the above details, in this study, new ternary composites composed of pure and Sm-doped CuO/ZnO/CuMn 2 O 4 were synthesized for efficient treatment of norfloxacin (antibiotic) and methyl green (dye) as examples of stable organic pollutants.…”

Section: Introductionmentioning

confidence: 99%

Preparation of New Sm-Doped CuO/ZnO/CuMn2O4 Tri-Composite for Photoremoval of Dissolved Organic Waste and Dielectric-Energy Storage

Althikrallah,

Alsulaim,

Alsharif

et al. 2024

J. Compos. Sci.

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Photocatalysis is considered as simple, green, and the best strategy for elimination of hazardous organic contaminants from wastewater. Herein, new broad spectrum photocatalysts based on pure and Sm-doped CuO/ZnO/CuMn2O4 ternary composites were simply prepared by co-precipitation approach. The X-ray diffraction results proved the formation of a composite structure. The transmission electron microscope (TEM) images displayed that most particles have a spherical shape with average mean sizes within 26–29 nm. The optical properties of both samples signified that the addition of Sm ions significantly improves the harvesting of the visible light spectrum of CuO/ZnO/CuMn2O4 ternary composites. The photocatalytic study confirmed that 97% of norfloxacin and 96% of methyl green pollutants were photo-degraded in the presence of the Sm-doped CuO/ZnO/CuMn2O4 catalyst after 50 and 40 min, respectively. The total organic carbon analysis revealed the high mineralization efficiency of the Sm-doped CuO/ZnO/CuMn2O4 catalyst to convert the norfloxacin and methyl green to carbon dioxide and water molecules. During three cycles, this catalyst presented a high removal efficiency for norfloxacin and methyl green contaminants. As a dielectric energy storage material, the Sm-doped CuO/ZnO/CuMn2O4 ternary composite has large dielectric constant values, mainly at low frequencies, with low dielectric loss compared to a pure CuO/ZnO/CuMn2O4 composite.

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“…5 Sobhani et al synthesized ZnMn 2 O 4 nanostructures using two distinct chemical techniques to degrade newly developed dyes. 6 Raj et al found that spinel ZnMn 2 O 4 nanosphere can be used for the efficient Sulfamethazine degradation under visible light irradiation. 7 By loading ZnMn 2 O 4 with an appropriate element, its characteristics can be altered.…”

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confidence: 99%

Tailoring the Structure, Optical and Shielding Characteristics of ZnMn₂O₄ Nanostructures through Sn-Doping

Heiba,

Ghannam,

Badawi

et al. 2024

ECS J. Solid State Sci. Technol.

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The current study aims to tailor the structure, optical and shielding characteristics of ZnMn2O4 nanostructures through Sn-doping. ZnMn2−xSnxO4 nanostructures were synthesized by the sol-gel technique. The sample containing 5% Sn exhibits the highest level of absorbance. ZnMn2−xSnxO4 system exhibits a maximum optical energy gap value of 2.55 eV when doped with 10% Sn, and a minimum optical energy gap value of 2.23 eV when doped with 5% Sn. The refractive index values of the samples containing 5 and 10% Sn are the highest in comparison to the other samples. The values of the non-linear optical parameters became maximum as x = 0.05. The radiation shielding constants were computed by Phy-X/PSD software. The half value length and tenth value length values reduced as ZnMn2O4 doped with Sn, implying that doped samples have better shielding capabilities than undoped ZnMn2O4. When compared to doped samples, ZnMn2O4 has the highest fast neutron removal cross-section value. ZnMn2-xSnxO4 samples demonstrate a greater rate of absorption for photons with lower energy as opposed to those with higher energy.

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ZnMn2O4 nanostructures: Synthesis via two different chemical methods, characterization, and photocatalytic applications for the degradation of new dyes

Cited by 14 publications

References 52 publications

Hydrothermal Synthesis, Formation Mechanism and Photocatalytic Activity of SnO₂/BiOBr

Hydrothermal Synthesis, Formation Mechanism and Photocatalytic Activity of SnO₂/BiOBr

Preparation of New Sm-Doped CuO/ZnO/CuMn2O4 Tri-Composite for Photoremoval of Dissolved Organic Waste and Dielectric-Energy Storage

Tailoring the Structure, Optical and Shielding Characteristics of ZnMn₂O₄ Nanostructures through Sn-Doping

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ZnMn2O4 nanostructures: Synthesis via two different chemical methods, characterization, and photocatalytic applications for the degradation of new dyes

Cited by 14 publications

References 52 publications

Hydrothermal Synthesis, Formation Mechanism and Photocatalytic Activity of SnO2/BiOBr

Hydrothermal Synthesis, Formation Mechanism and Photocatalytic Activity of SnO2/BiOBr

Preparation of New Sm-Doped CuO/ZnO/CuMn2O4 Tri-Composite for Photoremoval of Dissolved Organic Waste and Dielectric-Energy Storage

Tailoring the Structure, Optical and Shielding Characteristics of ZnMn2O4 Nanostructures through Sn-Doping

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Hydrothermal Synthesis, Formation Mechanism and Photocatalytic Activity of SnO₂/BiOBr

Hydrothermal Synthesis, Formation Mechanism and Photocatalytic Activity of SnO₂/BiOBr

Tailoring the Structure, Optical and Shielding Characteristics of ZnMn₂O₄ Nanostructures through Sn-Doping