Preparation, photocatalytic and antibacterial studies on novel doped ferrite nanoparticles: Characterization and mechanism evaluation

Long, Wei; Hamza, Mohammed Ubaid; Abdul-Fattah, Marwa N.; Rheima, Ahmed Mahdi; Ahmed, Yehya M.; Fahim, Fatima Safaa; Altimari, Usama S.; Aldulaim, Ahmed Kareem Obaid; Janani, B.; Fakhri, Ali

doi:10.1016/j.colsurfa.2022.129468

Cited by 63 publications

(7 citation statements)

References 52 publications

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“…Among the all-removal techniques, photocatalysis is considered superior as it does not localise the pollutants, but it degrades the pollutant into smaller molecules [17]. Different metal (Cu, Fe, Ni, Ag)-based materials [11,[18][19][20][21][22][23][24] are well known semiconductors and are used for various photochemical applications. Zeolites are widely used as a support for wellknown photocatalyst materials such as TiO 2 , ZnO, etc.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and application of ZSM-5/Graphene composite for photocatalytic degradation of industrial dyes

Sodha,

Bandyopadhyay,

Gaur

et al. 2024

Adv. Nat. Sci: Nanosci. Nanotechnol.

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Various materials and technologies are being employed to address the concern of increased wastewater generation. In this work, the synthesis of ZSM-5 (Zeolite Socony Mobil-5) and graphene (GR) composite, their characterisation, and application for the removal of dyes are presented. Two composites of ZSM-5 and GR composites were prepared via the hydrothermal method by varying the loading amount of GR, i.e. 1% and 5%, and labelled as GZ1 and GZ5. The parent and composite materials were characterised using field emission scanning electron microscope (FE-SEM), x-ray diffraction (XRD), diffuse reflectance spectroscopy (DRS), x-ray photoelectrons spectroscopy (XPS), Raman, and Fourier transform infrared (FTIR). The materials were then employed for the photodegradation of methyl orange (MO) dye. The adsorption efficiencies for ZSM-5, GR, GZ1, and GZ5 were found as 0%, 17.8%, 0%, and 16% respectively. According to photodegradation results, the GZ1 composite exhibits the maximum degradation efficiency of 75.3% for 20 ppm of MO, within 180 min of light exposure. The scavenger studies were performed to evaluate the role of active oxygen species (AOS) in the photocatalysis mechanism. All studies were performed with the catalyst dosage of 0.5 mg ml−1. The degradation efficiencies for GR, GZ5, and Z5 were reported as 34.2%, 20.8%, and 17.5%, respectively. On increasing the irradiation time to 240 min, the degradation efficiency of GZ1 reached 92%. The removal efficiencies for MO (7 ppm) and methyl blue (5 ppm) in a 12-ppm dye mixture were observed to be 98% and 97.2% respectively within 180 min of light exposure with GZ1 composite.

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Section: Introductionmentioning

confidence: 99%

Synthesis and application of ZSM-5/Graphene composite for photocatalytic degradation of industrial dyes

Sodha,

Bandyopadhyay,

Gaur

et al. 2024

Adv. Nat. Sci: Nanosci. Nanotechnol.

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“…Antibacterial activity [21] the antibacterial activity of the IONPs. Further, the biocompatibility of the pristine and OA-IONPs has been investigated using the L929 fibroblast cell lines.…”

Section: Introductionmentioning

confidence: 99%

Influence of oleic acid coating on the magnetic susceptibility and Fenton reaction-mediated ROS generation by the iron oxide nanoparticles

Aadinath,

Muthuvijayan

2024

Nano Ex.

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Fenton reaction-mediated reactive oxygen species (ROS) generation by the iron oxide nanoparticles (IONPs) is responsible for its antibacterial activity. In general, IONPs are surface-coated to facilitate stability, control over size, biocompatibility, solubility, etc. We hypothesize that the extent of surface coating onto the IONPs might affect Fenton reaction-mediated ROS generation, which would eventually impact its antibacterial activity. In the present study, IONPs were prepared using the co-precipitation method, and different weights of oleic acid (OA) were loaded onto the IONPs. Pristine IONPs and oleic acid-coated iron oxide nanoparticles (OA-IONPs) were characterized using Fourier transform-infrared spectroscopy, dynamic light scattering, transmission electron microscopy, X-ray diffraction, vibrating sample magnetometry, goniometer, and thermogravimetric analysis. We found that magnetic susceptibilities of the IONPs were significantly enhanced with an increase in OA loading on the IONPs. The antibacterial study showed that the percentage inhibition was inversely related to the extent of oleic acid coating on the IONPs. The dependency of ROS generation on the extent of surface coating over IONPs was demonstrated using the 2’,7’-dichlorodihydrofluorescein diacetate (DCFDA) assay. Although pristine IONPs showed the least ROS generation, they exhibited maximum percentage inhibition of bacteria. This might be due to mechanical damage to the bacterial cells because of their crystalline nature. An in vitro biocompatibility study conducted on L929 fibroblast cell lines indicated that all the nanoparticle preparations were cytocompatible. This study concluded that the extent of surface coating influences the Fenton reaction-mediated ROS generation and also the magnetic susceptibilities of the IONPs.

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“…So far, several porous solids have been evaluated regarding their efficiency as adsorbents for the selective capture of CO 2 . Examples include metal-organic frameworks (Vaghasia et al 2022;Lin et al 2022), hydrotalcite (Faria et al 2022), zeolites (Shen et al 2022;Gonzalez-Olmos et al 2022), metal oxides (Papalas et al 2021;Gao et al 2021;Mutch et al 2018;Long et al 2022;Bahadoran et al 2022a) and porous carbon (Singh et al 2019;Zhang et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Mesoporous carbon nitride supported MgO for enhanced CO2 capture

Refaat

Sadgal

Naga

et al. 2023

Environ Sci Pollut Res

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The growing concern about the environmental consequences of anthropogenic CO2 emissions significantly stimulated the research of low-cost, efficient, and recyclable solid adsorbents for CO2 capture. In this work, a series of MgO-supported mesoporous carbon nitride adsorbents with different MgO contents (xMgO/MCN) was prepared using a facile process. The obtained materials were tested for CO2 capture from 10 vol% CO2 mixture gas with N2 using a fixed bed adsorber at atmospheric pressure. At 25 ºC, the bare MCN support and unsupported MgO samples demonstrated CO2 capture capacities of 0.99, and 0.74 mmol g−1, respectively, which were lower than those of the xMgO/MCN composites.The incorporation of MgO into the MCN improved the CO2 uptake, and the 20MgO/MCN exhibited the highest CO2 capture capacity of 1.15 mmol g−1 at 25 °C. The improved performance of the 20MgO/MCN nanohybrid can be possibly assigned to the presence of high content of highly dispersed MgO NPs along with its improved textural properties in terms of high specific surface area (215 m2g−1), large pore volume (0.22 cm3g−1), and abundant mesoporous structure. The efffects of temperature and CO2 flow rate were also investigated on the CO2 capture performance of 20MgO/MCN. Temperature was found to have a negative influence on the CO2 capture capacity of the 20MgO/MCN, which decreased from 1.15 to 0.65 mmol g−1with temperature rise from 25 C to 150º C, due to the endothermicity of the process. Similarly, the capture capacity decreased from 1.15 to 0.54 mmol g−1 with the increase of the flow rate from 50 to 200 ml minute−1 respectively. Importantly, 20MgO/MCN showed excellent reusability with consistent CO2 capture capacity over five sequential sorption–desorption cycles, suggesting its suitability for the practical capture of CO2.

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Preparation, photocatalytic and antibacterial studies on novel doped ferrite nanoparticles: Characterization and mechanism evaluation

Cited by 63 publications

References 52 publications

Synthesis and application of ZSM-5/Graphene composite for photocatalytic degradation of industrial dyes

Synthesis and application of ZSM-5/Graphene composite for photocatalytic degradation of industrial dyes

Influence of oleic acid coating on the magnetic susceptibility and Fenton reaction-mediated ROS generation by the iron oxide nanoparticles

Mesoporous carbon nitride supported MgO for enhanced CO2 capture

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