Efficient degradation of AO7 by ceria-delafossite nanocomposite with non-inert support as a synergistic catalyst in electro-fenton process

Nazari, Pegah; Tootoonchian, Pedram; Setayesh, Shahrbanoo Rahman

doi:10.1016/j.envpol.2019.06.011

Cited by 25 publications

(5 citation statements)

References 33 publications

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“…The Behnajady–Modirshahla–Ghanbery (BMG) model is widely used to evaluate reaction rates in Fenton’s-like processes. , The model can be described by eq 1: where m and b represent two dimensionless constants that correlate with reaction kinetics and oxidation capacities, respectively . The lower the m value, the faster the reaction kinetics …”

Section: Materials and Methodsmentioning

confidence: 99%

Role of Cu_xO-Anchored Pyrolyzed Hydrochars on H₂O₂-Activated Degradation of Tetracycline: Effects of Pyrolysis Temperature and pH

Kurniawan

Gui³

et al. 2022

Ind. Eng. Chem. Res.

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This study investigated the effects of pyrolysis temperature on the physicochemical properties of pyrolyzed hydrochars (PHCs) and H 2 O 2 -catalyzed tetracycline (TC) degradation in a combined treatment with PHC and Cu x O@PHCs. The effects of pH on TC degradation by Cu x O@PHCs were also evaluated in the presence of H 2 O 2 and compared with that by Cu x O@ GAC. To analyze their physicochemical changes due to the oxidant, the carbocatalysts were characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD), Brunauer−Emmett−Teller (BET) analysis, and Fourier transform infrared (FTIR) spectroscopy. To sustain its cost-effectiveness, spent Cu x O@PHC700 was regenerated using NaOH. Based on the characterization results, increasing the pyrolysis temperature from 300 to 700 °C enlarged their specific surface area and pore volume. The X-ray diffraction (XRD) analysis revealed that the Cu anchored in the carbocatalyst existed as Cu 2 O/CuO. The H 2 O 2 -catalyzed degradation by Cu x O@PHC700 (0.231 min −1 ) was faster than that by Cu x O@PHC500 (0.107 min −1 ), Cu x O@PHC300 (0.013 min −1 ), and Cu x O@GAC (0.041 min −1 ) (p ≤ 0.05; analysis of variance (ANOVA)). The maximum TC removal was achieved by Cu x O@PHC700 at pH 6 due to the H-bonding and Cu-bridging effects between the Cu-loaded carbocatalyst and TC molecules in solutions. Treated effluents could meet the maximum discharge limit standard of 1 mg/L set by the local legislation. After the first regeneration, the spent Cu x O@PHC700 could attain about 96% of TC degradation. This implies that the saturated carbocatalyst still had promising catalytic activity for reuse. Overall, Cu x O@PHC is a cost-effective option for TC removal from contaminated water.

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Section: Materials and Methodsmentioning

confidence: 99%

Role of Cu_xO-Anchored Pyrolyzed Hydrochars on H₂O₂-Activated Degradation of Tetracycline: Effects of Pyrolysis Temperature and pH

Kurniawan

Gui³

et al. 2022

Ind. Eng. Chem. Res.

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“…[39] Copper-based 4, reproduced from ref. [22], with permission from Elsevier B.V.). catalysts have been found to be the most effective among transition metal catalysts in monometallic catalysts.…”

Section: Cu-doped Composite Metal Catalystmentioning

confidence: 99%

“…Therefore, Cu-based catalysts are widely used to treat in heterogeneous electric Fenton technology for organic wastewater. Nazari et al synthesized a new catalyst of CuFeO 2 /CeO 2 nanocomposite material and evaluated its catalytic performance on AO7 [22] (Figure 4). The results showed that CuFeO 2 /CeO 2 exhibited excellent performance in the electric Fenton system, with an AO7 degradation rate of 99.3 % and a COD removal rate of 79.1 %.…”

Section: Copper-based Polymetallic Oxide Catalystsmentioning

confidence: 99%

Progress of Copper‐based Nanocatalysts in Advanced Oxidation Degraded Organic Pollutants

Li,

You,

et al. 2024

ChemCatChem

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To address global pollution caused by contaminants in water bodies, it is crucial to develop an efficient and environmentally friendly treatment process for wastewater from various industries. Advanced oxidation processes (AOPs) have proven to be highly effective in wastewater treatment due to their high oxidation efficacy and the absence of secondary pollutants. Different methods such as ozone, Fenton, electrochemical, photolysis, and sonolysis can be used in AOPs to degrade emerging pollutants that are resistant to conventional methods. In recent years, nanotechnology has emerged as a viable solution, with various nanomaterials being developed for wastewater treatment. Among them, copper‐based nanocatalysts have shown great potential in AOPs. This review focuses on the progress and mechanisms of copper‐based nanocatalysts in wastewater treatment via AOPs. It also discusses the challenges associated with oxidation, electrochemistry, Fenton, and photocatalysis in wastewater treatment processes.

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“…Delafossite CuFeO 2 is a multifunctional material commonly used as a photocatalyst for solar energy conversion, [14][15][16] redox catalyst, [17][18][19] photoelectrodes, [20][21][22] supercapacitor and battery electrode, [23][24][25] sensor, 26) thermoelectric, 27) HTM, 28) and so on. According to the literature on delafossites, CuFeO 2 is a p-type material with hexagonal (2H) and rhombohedral (3 R) crystal structures.…”

Section: Introductionmentioning

confidence: 99%

A numerical study on delafossite CuFeO₂ as an absorber for efficient and sustainable oxide solar cells

Sarkar,

Mottakin,

Hasan

et al. 2023

Jpn. J. Appl. Phys.

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This study proposes an oxide solar cell in n-p-p structure. This design uses a p-type delafossite CuFeO2 layer to absorb sunlight, along with n-ZnO to transport electrons and p-NiO to transport holes. The SCAPS-1D modeling software was employed to conduct the relative study on the p-CuFeO2 absorber layer. The optimized thickness, bandgap, and bulk defects tolerance limit of the absorber layer are 700 nm, 1.3 eV, and 1014 cm─3, respectively. The charge carrier’s density in the absorber layer at 1018 cm─3 showed the highest performance. The defects tolerance limit of the interface n-ZnO/CuFeO2 is 1017 cm─3. After optimizing the device FTO/n-ZnO/CuFeO2/p-NiO/Au exhibited a maximum power conversion efficiency (PCE) of 19.93 %, corresponding Voc of 1.10 V, Jsc of 24.95 mA cm−2, and FF of 85.5%. Additionally, this study demonstrates the prospect of CuFeO2 as the active layer in oxide-based solar cell technology.

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Efficient degradation of AO7 by ceria-delafossite nanocomposite with non-inert support as a synergistic catalyst in electro-fenton process

Cited by 25 publications

References 33 publications

Role of Cu_xO-Anchored Pyrolyzed Hydrochars on H₂O₂-Activated Degradation of Tetracycline: Effects of Pyrolysis Temperature and pH

Role of Cu_xO-Anchored Pyrolyzed Hydrochars on H₂O₂-Activated Degradation of Tetracycline: Effects of Pyrolysis Temperature and pH

Progress of Copper‐based Nanocatalysts in Advanced Oxidation Degraded Organic Pollutants

A numerical study on delafossite CuFeO₂ as an absorber for efficient and sustainable oxide solar cells

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Efficient degradation of AO7 by ceria-delafossite nanocomposite with non-inert support as a synergistic catalyst in electro-fenton process

Cited by 25 publications

References 33 publications

Role of CuxO-Anchored Pyrolyzed Hydrochars on H2O2-Activated Degradation of Tetracycline: Effects of Pyrolysis Temperature and pH

Role of CuxO-Anchored Pyrolyzed Hydrochars on H2O2-Activated Degradation of Tetracycline: Effects of Pyrolysis Temperature and pH

Progress of Copper‐based Nanocatalysts in Advanced Oxidation Degraded Organic Pollutants

A numerical study on delafossite CuFeO2 as an absorber for efficient and sustainable oxide solar cells

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Product

Resources

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Role of Cu_xO-Anchored Pyrolyzed Hydrochars on H₂O₂-Activated Degradation of Tetracycline: Effects of Pyrolysis Temperature and pH

Role of Cu_xO-Anchored Pyrolyzed Hydrochars on H₂O₂-Activated Degradation of Tetracycline: Effects of Pyrolysis Temperature and pH

A numerical study on delafossite CuFeO₂ as an absorber for efficient and sustainable oxide solar cells