Enhanced catalytic performance of CuFeS2 chalcogenide prepared by microwave-assisted route for photo-Fenton oxidation of emerging pollutant in water

Salla, Julia da Silveira; Dotto, Guilherme L.; Hotza, Dachamir; Landers, Richard; Martinello, Kátia da Boit; Foletto, Edson Luiz

doi:10.1016/j.jece.2020.104077

Cited by 26 publications

(11 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, the surface area calculated using the BET equation was determined to be 3.25 m 2 g À1 . The results follow other values reported in the literature, such as 3.94 m 2 g À1 for CuFeS 2 prepared by citrate-modified method [31] and microwave-assisted route [23]. It has been reported that the catalytic activity of several metallic compounds may be related to their degree of crystallinity due to their enhanced effectiveness in charge transferring from its center to its surface [23,32,33].…”

Section: Characterization Of Cufes 2 Catalystsupporting

confidence: 88%

See 1 more Smart Citation

Photo-assisted degradation of organic pollutant by CuFeS2 powder in RGB-LED reactors: A comprehensive study of band gap values and the relation between wavelength and electron-hole recombination

Vieira

Martinello

Ribeiro

et al. 2022

Advanced Powder Technology

View full text Add to dashboard Cite

Section: Characterization Of Cufes 2 Catalystsupporting

confidence: 88%

“…All chemicals used in the experiments were analytical grade without further purification. CuFeS 2 powders were prepared by hydrothermal route [23,24]. 10 mL of FeCl 3 and 10 mL of CuCl 2 aqueous solutions (0.1 mol L À1 ) were mixed.…”

Section: Materials Preparationmentioning

confidence: 99%

Photo-assisted degradation of organic pollutant by CuFeS2 powder in RGB-LED reactors: A comprehensive study of band gap values and the relation between wavelength and electron-hole recombination

Vieira

Martinello

Ribeiro

et al. 2022

Advanced Powder Technology

View full text Add to dashboard Cite

“…The peak at 163.97 eV belongs to the polysulfide (S n 2- ) formed by sulphur vacancy on the surface of CuFeS 2. The peaks at 168.66 eV and 169.74 eV are attributed to the presence of sulfate, possibly due to the oxidation of on the CuFeS 2 surfaces [ 25 , 26 ]. The XPS characterization further confirmed that CuFeS 2 was successfully synthesized, which is consistent with the XRD and HRTEM results.…”

Section: Resultsmentioning

confidence: 99%

Photothermal Regulated Nanozyme of CuFeS2 Nanoparticles for Efficiently Promoting Wound Healing Infected by Multidrug Resistant Bacteria

Liu

Zhao

et al. 2022

Nanomaterials

View full text Add to dashboard Cite

Peroxidase-mediated chemokinetic therapy (CDT) can effectively resist bacteria; however, factors such as the high dosage of drugs seriously limit the antibacterial effect. Herein, CuFeS2 nanoparticles (NPs) nanozyme antibacterial system with the photothermal effect and peroxidase-like catalytic activity are proposed as a combined antibacterial agent with biosafety, high-efficiency, and broad-spectrum antibacterial ability. In addition, the as-obtained CuFeS2 NPs with a low doses of Cu+ and Fe3+ can change the permeability of bacterial cell membranes and break the antioxidant balance by consuming intracellular glutathione (GSH), which results in more conducive ROS production. Meanwhile, the photothermal heating can regulate the CuFeS2 NPs close to their optimal reaction temperature (60 °C) to release more hydroxyl radical in low concentrations of H2O2 (100 µM). The proposed CuFeS2 NPs-based antibacterial system achieve more than 99% inactivation efficiency of methicillin-resistant Staphylococcus aureus (106 CFU mL−1 MRSA), hyperspectral bacteria β-Escherichia coli (106 CFU mL−1 ESBL) and Pseudomonas aeruginosa (106 CFU mL−1 PA), even at low concentration (2 μg mL−1), which is superior to those of the conventional CuO NPs at 4 mg mL−1 reported in the literature. In vivo experiments further confirm that CuFeS2 NPs can effectively treat wounds infected by MRSA and promote the wound healing. This study demonstrates that excellent antibacterial ability and good biocompatibility make CuFeS2 NPs a potential anti-infection nanozyme with broad application prospects.

show abstract

“…1b. The peak at 3441 cm −1 corresponds to the stretching vibration of O-H from water adsorbed by the sample (Salavati-Niasari et al attributed to Fe-C = O and Fe-CO stretching mode, respectively, due to the functional groups of citric acid present in the sample (Salla et al 2020;Liu et al 2020;Kazakov et al 2020). Moreover, the absorption peaks at 1156, 781 and 502 cm −1 can be assigne to In-O stretching and bending vibrations (Rey et al 2005;Majeed Khan et al 2013).…”

Section: Characterization Of Fein 2 Smentioning

confidence: 99%

“…In the exploration of iron-based materials as catalysts for the heterogeneous Fenton process, the versatility of chalcogenide compounds has attracted greater interest in recent years. Due to the great possibility of element combining and the different crystalline structures found, several physical and chemical properties can be obtained with these materials (Salla et al 2020). Chalcogenide semiconductors are successfully applied in electronic devices (Kim et al 2018;Pandian et al 2018) and poorly investigated for wastewater treatment, but they stand out for their wide band gap energy (0.5-3.5 eV) and elevated absorption coefficient (> 10 -5 cm -1 ), essential for AOPs applications (Woods-Robinson et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Novel application of FeIn2S4 as an efficient photo-Fenton catalyst for degradation of Ponceau 4R in aqueous solution

Grassi

Salla

Jahn

et al. 2021

Int. J. Environ. Sci. Technol.

Self Cite

View full text Add to dashboard Cite

The chalcogenide composite FeIn 2 S 4 was prepared by hydrothermal route and, for the first time, investigated as a heterogeneous catalyst in the photo-Fenton treatment for Ponceau 4R dye (C 20 H 11 N 2 Na 3 O 10 S 3 ) under visible irradiation. The composite was characterized by X-ray diffraction (DRX), Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), scanning electron microscopy (SEM) coupled with energy-dispersive X-ray spectrometry (EDS) and elemental mapping, band gap energy and X-ray photoelectron spectroscopy (XPS). The optimal experimental conditions were investigated and determined to be pH 3.0, 0.5 g L −1 of catalyst and 2.5 mmol L −1 of H 2 O 2 . A decolorization efficiency of 93.3% was achieved in 60 min of reaction and a TOC removal of 92.3% was reached in 180 min. The stability and recycle capacity of FeIn 2 S 4 indicated that the catalyst can be used more than four times without considerable loss of efficiency. Free radicals investigation revealed that • OH and O 2•− radicals were the major oxygen reactive species involved on Ponceau 4R degradation. The lower-mass intermediates from Ponceau 4R degradation were identified, and a mechanism for the photo-Fenton treatment was suggested. Therefore, the composite showed a performance that makes it a promising catalyst for removing emerging contaminants in water.

show abstract

Enhanced catalytic performance of CuFeS2 chalcogenide prepared by microwave-assisted route for photo-Fenton oxidation of emerging pollutant in water

Cited by 26 publications

References 35 publications

Photo-assisted degradation of organic pollutant by CuFeS2 powder in RGB-LED reactors: A comprehensive study of band gap values and the relation between wavelength and electron-hole recombination

Photo-assisted degradation of organic pollutant by CuFeS2 powder in RGB-LED reactors: A comprehensive study of band gap values and the relation between wavelength and electron-hole recombination

Photothermal Regulated Nanozyme of CuFeS2 Nanoparticles for Efficiently Promoting Wound Healing Infected by Multidrug Resistant Bacteria

Novel application of FeIn2S4 as an efficient photo-Fenton catalyst for degradation of Ponceau 4R in aqueous solution

Contact Info

Product

Resources

About