Synthesis and characterization of Pd(0) Schiff base complex supported on halloysite nanoclay as a reusable catalyst for treating wastewater contaminants in aqueous media

Yek, Samaneh Mahmoudi‐Gom; Baran, Talat; Nasrollahzadeh, Mahmoud; Bakhshali‐Dehkordi, Raziyeh; Baran, Nuray Yılmaz; Shokouhimehr, Mohammadreza

doi:10.1016/j.ijleo.2021.166672

Cited by 17 publications

(4 citation statements)

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“…Vibration bands seen at this wavenumber are not examined in the bare membrane but are measured in bare HNT powder and all of HNT composite nanofilters. The vibration band around 911 cm –1 can be attributed to the deformation of inner hydroxyl (O–H) groups, and 755 cm –1 vibration band can be observed as the stretching vibrations of Si–O. − According to the FTIR results, it can be said that the HNT was successfully introduced within the nanofiber structure. It was observed that new peaks were formed in the 950–650 cm –1 band after the electrospraying of photocatalysts which indicates the presence of Ti–O–Ti. , The addition of TiO 2 and ZnO does not affect the wavenumber of the peaks strongly.…”

Section: Resultsmentioning

confidence: 99%

“…In addition to FTIR, SEM–EDS analysis was also performed to determine the integration of nanoadditives into the nanofiber structure. In addition to C and O present in the PAN structure, peaks of Al and Si are also evaluated as an evidence of the presence of the HNT according to the SEM-EDS results. − Figure a shows the SEM-EDS spectra of PAN/HNT composite nanofibers. The spectra of SEM–EDS showed that TiO 2 and ZnO photocatalysts were successfully electrosprayed on the PAN/HNT nanofiber surface, indicating Si and Al elements for the HNT and Ti and Zn peaks for PAN/HNT/TiO 2 (Figure b) and PAN/HNT/ZnO nanofibers (Figure c).…”

Section: Resultsmentioning

confidence: 99%

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Fabrication and Application of Halloysite Nanotube-Embedded Photocatalytic Nanofibers with Antibacterial Properties

et al. 2022

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With decreasing indoor air quality, increased time spent at indoors, and especially with the COVID-19 pandemic, the development of new materials for bacteria and viruses has become even more important. Less material consumption due to the electrospinning process, the easy availability/affordability of the halloysite nanotube (HNT), and the antibacterial effect of both TiO 2 and ZnO nanoparticles make the study even more interesting. HNTs have attracted research attention in recent years due to their low cost, high mechanical strength, natural and environmentally friendly structure, and non-toxicity to human health and ecosystem. In this study, HNT-embedded composite nanofiber filters were fabricated as filter materials using the electrospinning method. Photocatalysts (TiO 2 and ZnO) were incorporated into the composite nanofibers by the electrospraying method. The results showed that the combination of both HNT/TiO 2 and HNT/ZnO additives was successfully integrated into the filter structure. The effect of embedding the HNT and spraying photocatalysts enables the fabrication of composite filters with lower pressure drop, high filtration efficiency, improved mechanical properties, and high antibacterial properties against Escherichia coli, making the nanofibers suitable and promising for face masks and air filter materials.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Fabrication and Application of Halloysite Nanotube-Embedded Photocatalytic Nanofibers with Antibacterial Properties

et al. 2022

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“…The halloysite interlayer includes Al–OH nanosheets and is covered with Si–O nanosheets and its outer surface possess primarily Si–O–Si and Si–OH groups. 66 Halloysite is the prevailing kaolin mineral instead of kaolinite in many countries of the Pacific Rim. In addition, the Northland halloysite deposits in New Zealand are due to the rapid alteration of glassy rhyolites at low temperatures.…”

Section: Application Of Nature-inspired Materials In Fuel Cellsmentioning

confidence: 99%

Application of biowaste and nature-inspired (nano)materials in fuel cells

et al. 2023

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“…Several adsorbents are used to eliminate organic pollutants, such as activated carbons (ACs), zeolites, clay minerals, metal-organic framework, and Schiff bases, from the water [24]. However, Schiff bases are one of the most extraordinary adsorbents to remove organic contaminants from drinking water as a result of their adsorption capacity and excellent reusability [25]. Due to their ease of synthesis and versatility, Schiff bases are among the most extensively used ligands.…”

Section: Introductionmentioning

confidence: 99%

Schiff-Based Modified Bentonite Clay Composites for Wastewater Treatment: Experimental and DFT-Based Analysis

Mutahir,

Yaqoob,

Khan

et al. 2023

Crystals

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A new bentonite clay composite was synthesized by modifying bentonite clay and Schiff base (SB). The purpose of the composite was to eliminate methylene blue (MB) from wastewater. To characterize its efficacy, several spectroscopic techniques (UV-Visible spectroscopy, FTIR, SEM, and XRD) were used. The interactions between the adsorbent dose, pH, initial dye concentration, and contact duration were also tested to evaluate the adsorption capacity of the adsorbent. The results demonstrated that changes in the modification led to a considerable increase in adsorption capacity, with a maximum monolayer adsorption capacity of 258 mg/g being achieved at pH 11. Based on the batch experiments, molecular dynamics simulations, and DFT studies, the pseudo-second-order model described the sorption of MB on the bentonite clay composite the best. It was found that the adsorption of MB on the bentonite clay composite primarily followed a monolayer adsorption mechanism. Using the Langmuir isotherm model, the experimental results were consistent, indicating the monolayer adsorption mechanism. Finally, this study demonstrated that the bentonite-SB adsorbent had enormous promise for the elimination of methylene blue (MB) from wastewaters, as evidenced by the electron density mapping within the molecular electrostatic potential plot and the electrostatic potential graphing within the iso-surface plot.

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Synthesis and characterization of Pd(0) Schiff base complex supported on halloysite nanoclay as a reusable catalyst for treating wastewater contaminants in aqueous media

Cited by 17 publications

References 75 publications

Fabrication and Application of Halloysite Nanotube-Embedded Photocatalytic Nanofibers with Antibacterial Properties

Fabrication and Application of Halloysite Nanotube-Embedded Photocatalytic Nanofibers with Antibacterial Properties

Application of biowaste and nature-inspired (nano)materials in fuel cells

Schiff-Based Modified Bentonite Clay Composites for Wastewater Treatment: Experimental and DFT-Based Analysis

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