Optical and photocatalytic properties of TiO2–Bi2O3–CuO supported on natural zeolite for removing Safranin-O dye from water and wastewater

Boudraa, Reguia; Talantikite-Touati, Djahida; Souici, Abdelhafid; Djermoune, Atmane; Saidani, Amira; Fendi, Karim; Amrane, Abdeltif; Bollinger, Jean‐Claude; Tran, Hai Nguyen; Hadadi, Amina; Mouni, Lotfi

doi:10.1016/j.jphotochem.2023.114845

Cited by 14 publications

(3 citation statements)

References 73 publications

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“…Increasing the concentration of the catalyst to 5 mg resulted in 99% degradation of the dye in 15 min, while 1 mg and 2 mg catalyst loading showed 90% and 93% degradation in 20 and 30 min, respectively, as shown in Figure 6a-c. A comparison of our study with the reported nanocomposites used for the degradation of safranin dye is given in Table 1 [32][33][34][35][36][37][38]. Similarly, a comparison of our study with the reported P25 commercial TiO 2 catalyst used for the degradation of safranin dye is given in Table 2 [39][40][41][42], where the prepared catalysts have performed better than the commercial TiO 2 catalyst under sunlight.…”

Section: Resultsmentioning

confidence: 67%

2D Nanostructured MXene-Based Silver Nanoparticles for Photocatalytic Degradation of Safranin Dye

Faheem,

Riaz,

Alam

et al. 2024

Catalysts

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Due to their unique chemical structure, MXenes have been recognized as a potential material, having a high surface area, high thermal and electrical conductivity, and a tunable band gap, showing great hydrophilicity and stability. The adsorption and reducing properties of MXene-based 2D nanomaterials make them efficient photocatalysts for degrading organic pollutants. Silver nanoparticles were synthesized over the exfoliated MXene sheets (1:50 and 1:20 by weight to silver salt) using polyvinyl pyrrolidone as a dispersant. The elemental composition and morphology of the nanocatalysts Ag20@Ti3C2Tx and Ag50@Ti3C2Tx were analyzed by X-ray diffraction (XRD) analysis, X-ray photoelectron spectroscopy (XPS), energy-dispersive X-ray (EDX) spectroscopy, and field-emission scanning electron microscopy (FESEM). FESEM micrographs reveal porous exfoliated Ti3C2Tx sheets obtained by continuously stirring Ti3AlC2 for 44 h at 60 °C, providing a platform for the growth of Ag nanoparticles. Diffused reflectance spectroscopy (DRS) indicates that the bare silver nanoparticles show a decrease in the band gap value from 2.4 to 1.35 and 1.41 eV in Ag50@Ti3C2Tx and Ag20@Ti3C2Tx, respectively, which enables the nanocomposites to show excellent catalytic performance and degrade around 99% of safranin dye within 15 min at a concentration of 5 mg Ag50@Ti3C2Tx.

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Section: Resultsmentioning

confidence: 67%

2D Nanostructured MXene-Based Silver Nanoparticles for Photocatalytic Degradation of Safranin Dye

Faheem,

Riaz,

Alam

et al. 2024

Catalysts

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“…Physical, chemical, and biological processes have been used for the removal of dyes from aquatic environments. These techniques include photocatalytic degradation [4], biodegradation [5], flocculation [6,7], oxidative destruction via UV/ozone, membrane separation, anaerobic biological treatment, and sonolysis. However, these methods have significant downfalls, including the production of hazardous waste, high flow rates, ozone, and free radicals [8].…”

Section: Introductionmentioning

confidence: 99%

“…Both academic and industrial researchers are investigating chitosan as an underutilized resource and as a promising new functional material in a wide range of sectors [20]. The physical and chemical structure of chitosan has also been described: it is a linear polysaccharide composed of deacetylated and acetylated d-glucosamine units linked by (1,4) glycosidic bonds [21]. According to Hahn et al [22] and Spranghers et al [23], the principal source of chitin and chitosan on a large scale is the exoskeleton of crustaceans, which is a byproduct of the marine food industry.…”

Section: Introductionmentioning

confidence: 99%

Efficient and Low-Cost Water Remediation for Chitosan Derived from Shrimp Waste, an Ecofriendly Material: Kinetics Modeling, Response Surface Methodology Optimization, and Mechanism

Benazouz,

Bouchelkia,

Imessaoudene

et al. 2023

Water

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The hydrothermal production of chitosan from the carapaces of gray shrimp was carried out, and the obtained material was characterized via X-ray diffraction analysis, infrared spectroscopy, and pH zero-charge point, giving the expected results. Orange G dye adsorption onto synthetized chitosan was investigated in a batch system, the kinetic study was well-described by a nonlinearized pseudo-second-order model, and the equilibrium data indicated that the nonlinear Langmuir form was appropriate to describe the adsorption system with a maximum adsorption capacity of 34.63 mg/g compared with that found experimentally of 31.9 mg/g. The influences of most of the operating parameters, such as pH, adsorbent concentration, temperature, initial dye concentration, and contact time, were studied. These five independent variables acting on the adsorption performance of Orange G were selected for optimization and modeling processes through a central rotating composite design using response surface methodology (RSM). The percentage of removal of Orange G by chitosan prepared from shrimp shells was predicted with a second-degree polynomial equation, and the postulated model was valid and represented well the phenomenon studied in the experimental domain, with an R2 = 0.98 and an RAdj = 0.95. An initial Orange G concentration of 10 mg/L, a pH of 6.5, a chitosan amount of 0.3 g/L, a temperature of 25 °C, and an adsorption time of 450 min were found to be the optimum conditions in batch mode for the maximum uptake of Orange G (removal of 97.43%).

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Improvement of the Photocatalytic and Biological Activities of Copper Oxide Nanoparticles by Coupling with Barium Oxide Nanoparticles

Khan,

Gul,

Khan

et al. 2024

BioNanoSci.

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Optical and photocatalytic properties of TiO2–Bi2O3–CuO supported on natural zeolite for removing Safranin-O dye from water and wastewater

Cited by 14 publications

References 73 publications

2D Nanostructured MXene-Based Silver Nanoparticles for Photocatalytic Degradation of Safranin Dye

2D Nanostructured MXene-Based Silver Nanoparticles for Photocatalytic Degradation of Safranin Dye

Efficient and Low-Cost Water Remediation for Chitosan Derived from Shrimp Waste, an Ecofriendly Material: Kinetics Modeling, Response Surface Methodology Optimization, and Mechanism

Improvement of the Photocatalytic and Biological Activities of Copper Oxide Nanoparticles by Coupling with Barium Oxide Nanoparticles

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