Photo-Oxidation of Organic Dye by Fe2O3 Nanoparticles: Catalyst, Electron Acceptor, and Polyurethane Membrane (PU-Fe2O3) Effects

Abstract

The textile industry’s discharges have long been regarded as severe water pollution. The photocatalytic degradation of dyes using semiconductors is one of the crucial methods. The present study efficiently used the mechanical method to synthesize Iron oxide Nanoparticles. XRD, FT-IR, UV-Vis DRS, and Raman analyses were performed to analyze the structural and optical. From the data provided by XRD and Raman data, we believed that the as-synthesized Iron oxide was pure hematite (α-Fe2O3) with a hexagonal structure. Additionally, the EDS results show that the synthesized material is pure. By adjusting specific parameters, including the dye concentration, the catalyst dosage, the pH, and the oxidizing agent such as H2O2 and K2S2O8, the degradation of eosin yellowish using Fe2O3 as a photocatalyst has been discussed. Additionally, the kinetics of eosin yellowish degradation has been studied. A study was also conducted using Fe2O3 nanoparticles attached to polyurethane polymer (PU) to investigate its photocatalytic activity on methylene blue, methyl orange, and indigo carmine. In 30 minutes, nearly 90% of the dyes had degraded. The total organic carbon (TOC) analysis confirmed this result.

Waste mediated synthesis of iron nanoparticles using Aegle marmelos peel extract for catalytic degradation of toxic dye contaminants

“…As is quite pertinent from previous literature reports, synthetic iron oxides have a point of zero charge (PZC) value lying between 7 and 9. 49 The surface of the catalyst becomes positively charged, favouring electrostatic interactions with the anionic dyes, as soon as the pH value drops below pHpzc. As per the findings of the study involving the degradation of Eosin Yellow dye in the presence of the synthesized catalyst conducted at different pH values of 2, 4, 6, 8, 10 and 12, it was observed that the best results were obtained at pH 6, showing a degradation efficiency of more than 15% than that at pH 12 (Fig.…”

Recent Strategies for the Remediation of Textile Dyes from Wastewater: A Systematic Review

“…These NPs act as adsorbents for the successful removal of dyes. In their study, Balrabe et al [165] reported that eosin yellowish displayed efficient removal (95%) at 75 ppm using Fe 2 O 3 nanoparticles, pH 6, with a 15 min exposure time. In another study, Darwesh et al [168] reported the F. oxysporum OSF18 strain-synthesized CuO-NPs immobilized in alginate beads, which exhibited 90% dye remediation efficiency.…”

“…Traditional methods of dye remediation are less effective and more expensive. In recent years, nano-bioremediation has emerged as a viable alternative for the effective and environmentally friendly removal of dyes from the environment [165]. Numerous industries, including agriculture, energy, medicine, and the environment, all use nanotechnology [14,166,167].…”

Modification of α-Fe2O3 Nanoparticles with Carbon Layer for Robust Photo-Fenton Catalytic Degradation of Methyl Orange

“…A variety of catalysts have been employed for the degradation of organic dyes, such as Cu/Ni-doped nanostructures, Fe 2 O 3 nanoparticles, polymeric hydrogel containing TiO 2 nanoparticles, Fe 2 O 3 /ZnO, Fe 2 O 3 /SiO 2 , CeO 2 /Ce 2 S 3 composites, Ch-Pani/Fe 2 O 3 , C 3 N 4 /Fe 2 O 3 , polyaniline/SnO 2 nanospheres, Fe 2 O 3 /ZnTe, Fe 2 O 3 /Mn 3 O 4 , CuO/ZnO nanocomposites, and tellurium-based metal alloys [6,[11][12][13][14][15][16][17][18][19]. Among these catalysts, hematite (Fe 2 O 3 ) stands out for its remarkable qualities, which include resistance to corrosion, high efficiency, and non-toxicity [20].…”