Green synthesis of TiO2 NPs/pristine pomegranate peel extract nanocomposite and its antimicrobial activity for water disinfection

Abu-Dalo, Muna A.; Jaradat, Abdullah A.; Albiss, B. A.; Al-Rawashdeh, Nathir A. F.

doi:10.1016/j.jece.2019.103370

Cited by 68 publications

(24 citation statements)

References 22 publications

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“…Higher zeta potential negativity (−15.0 mV) has been reported as a key reason for small-scale TiO 2 NPs because of the increasing electrostatic repulsive forces between the nanoparticle surfaces that prevent their aggregation to larger particles [31]. Based on our current findings, which revealed that the green-synthesized TiO 2 NPs using CE displayed smaller sizes and a greater zeta potential negativity than those synthesized from PPE, the formation of higher clusters could be observed in TiO 2 NPs_PPE (439.6 nm by DLS, 85.6 nm by TEM) on the surface of the seeds, whereas the TiO 2 NPs_CE (45.14 nm by DSL, 79.6 nm by TEM) showed individual nanoparticles and some clusters.…”

Section: Discussionmentioning

confidence: 99%

“…Based on our current findings, which revealed that the green-synthesized TiO 2 NPs using CE displayed smaller sizes and a greater zeta potential negativity than those synthesized from PPE, the formation of higher clusters could be observed in TiO 2 NPs_PPE (439.6 nm by DLS, 85.6 nm by TEM) on the surface of the seeds, whereas the TiO 2 NPs_CE (45.14 nm by DSL, 79.6 nm by TEM) showed individual nanoparticles and some clusters. In the same context, Al Qarni et al [32] succeeded in synthesizing nanoporous anatase-phase TiO 2 using coffee husk extract with a small-scale size of 7.5 nm, whereas Abu-Dalo et al [31] synthesized TiO 2 NPs using PPE with a Z-average size of 620 nm and zeta potential of 6.95 mV. XRD data also confirmed that crystalline TiO 2 NPs exhibited a strong anatase phase with 2θ values of 25.28 • and 48.37 • , and the small size was proven by broad peaks [33], which concur with the JCPDS file No.…”

Section: Discussionmentioning

confidence: 99%

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Integrated Approaches for Adsorption and Incorporation Testing of Green-Synthesized TiO2NPs Mediated by Seed-Priming Technology in Punica granatum L.

et al. 2022

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Seed priming is a novel approach that is undertaken to improve seed germination and therefore potentially enhance growth and yield. Low-cost, eco-friendly, and efficient seed treatment as a means of enhancing growth and yield is still being sought for high-value crops such as pomegranates (Punica granatum L.), particularly in areas situated at high altitudes such as the Taif region. The uptake of nanoparticles (NPs) by plants provides a potential pathway for NP exposure. Therefore, it is imperative to understand NP uptake via seed priming and their unique properties within plants. In the present study, titanium dioxide nanoparticles (TiO2NPs) were green-synthesized and utilized as priming agents for pomegranate seeds at a concentration of 40 mg/mL for 24 h. The adsorption of NPs was verified by scanning electron microscopy (SEM) and energy dispersive X-ray analysis/spectroscopy (EDX), while their incorporation was detected by transmission electron microscopy (TEM). To validate the EM results, X-ray fluorescence (XRF) and inductively coupled plasma optical emission spectroscopy (ICP–OES) techniques were further undertaken. The results confirmed the successful synthesis of pure anatase TiO2NPs by employing aqueous extracts of pomegranate fruit peel (PPE) and coffee ground beans (CE). All of the analytical techniques employed in this research confirmed the incorporation of TiO2NPs inside seeds, even after storage during priming treatment. This study lays the foundation for future sustainable seed technologies in terms of crop productivity and seed germination.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Integrated Approaches for Adsorption and Incorporation Testing of Green-Synthesized TiO2NPs Mediated by Seed-Priming Technology in Punica granatum L.

et al. 2022

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“…Furthermore, the microbial populations and organic matter in real water samples were determined using biological oxygen demand (BOD5). e results showed that samples containing PPP-TiO 2 had lower BOD5 values than TiO 2 NPs [115].…”

Section: Titanium Dioxide Nanoparticles (Tio 2 Nps)mentioning

confidence: 93%

Green Nanotechnology: Recent Research on Bioresource-Based Nanoparticle Synthesis and Applications

Alqarni

Alghamdi

Alshahrani

et al. 2022

Journal of Chemistry

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In the last decades, the idea of green nanotechnology has been expanding, and researchers are developing greener and more sustainable techniques for synthesizing nanoparticles (NPs). The major objectives are to fabricate NPs using simple, sustainable, and cost-effective procedures while avoiding the use of hazardous materials that are usually utilized as reducing or capping agents. Many biosources, including plants, bacteria, fungus, yeasts, and algae, have been used to fabricate NPs of various shapes and sizes. The authors of this study emphasized the most current studies for fabricating NPs from biosources and their applications in a wide range of fields. This review addressed studies that cover green techniques for synthesizing nanoparticles of Ag, Au, ZnO, CuO, Co3O4, Fe3O4, TiO2, NiO, Al2O3, Cr2O3, Sm2O3, CeO2, La2O3, and Y2O3. Also, their applications were taken under consideration and discussed.

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“…This is in accordance with other works, which also found that Gram-positive bacteria were more susceptible to TiO 2 NPs than Gram-negative, which could be due to the distinct structure of the bacteria. Gram-negative bacteria have a thin peptidoglycan layer, which is surrounded by an outer membrane layer composed by proteins, lipids and lipopolysaccharides, whereas Gram-positive bacteria present one thick peptidoglycan layer which contains a mixture of lipoteichoic acid and glucose with amino acids [30,49]. The higher amount of negatively charged peptidoglycans in Gram-positive bacteria can make them more susceptible to positively charged antimicrobials [27].…”

Section: Antibacterial Effectmentioning

confidence: 99%

Antibacterial and Biodegradable Electrospun Filtering Membranes for Facemasks: An Attempt to Reduce Disposable Masks Use

et al. 2021

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Due to the prevalence of the COVID-19 pandemic, the demand for disposable facemasks has become a global issue. Unfortunately, the use of these products has negative effects on the environment, and therefore, the use of biodegradable materials is a powerful strategy to overcome this challenge. Aligned with this concept, in this work, biodegradable facemasks were developed using poly(ε-caprolactone) (PCL) polymer and cotton natural fibers. The filter layer was produced using an electrospinning technique, since electrospun membranes present remarkable characteristics for air filtration. The electrospun membranes were functionalized with different nanoparticles (NPs), including silver (Ag), titanium dioxide (TiO2) and magnesium oxide (MgO), in order to include new properties, namely antibacterial effect. The developed membranes were characterized by FESEM, EDS, ATR-FTIR, GSDR and TGA, which confirmed the successful impregnation of NPs onto PCL membranes. The antibacterial effect and filtration efficiency were assessed, with the PCL/MgO NPs membrane presenting better results, showing inhibition zone diameters of 25.3 and 13.5 mm against Gram-positive and Gram-negative bacteria, respectively, and filtration efficiency of 99.4%. Three facemask prototypes were developed, and their filtration efficiency, air permeability and thermal comfort were evaluated. Overall, this study demonstrates the potential of PCL/NPs electrospun membranes to act as an active and biodegradable filter layer in facemasks.

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Green synthesis of TiO2 NPs/pristine pomegranate peel extract nanocomposite and its antimicrobial activity for water disinfection

Cited by 68 publications

References 22 publications

Integrated Approaches for Adsorption and Incorporation Testing of Green-Synthesized TiO2NPs Mediated by Seed-Priming Technology in Punica granatum L.

Integrated Approaches for Adsorption and Incorporation Testing of Green-Synthesized TiO2NPs Mediated by Seed-Priming Technology in Punica granatum L.

Green Nanotechnology: Recent Research on Bioresource-Based Nanoparticle Synthesis and Applications

Antibacterial and Biodegradable Electrospun Filtering Membranes for Facemasks: An Attempt to Reduce Disposable Masks Use

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