In situ synthesis of Cu/Cu2O nanoparticles on the TEMPO oxidized cotton fabrics

Marković, Darka; Korica, Matea; Kostić, Mirjana; Radovanović, Željko; Šaponjić, Zoran; Mitrić, Miodrag; Radetić, Maja

doi:10.1007/s10570-017-1566-5

Cited by 51 publications

(34 citation statements)

References 42 publications

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“…Recently, Cu 2 O and Cu 2 O-based nanomaterials have attracted great attention as effective and broad-spectrum antibacterial agents; and with its low cost and high safety, they have been practically used in various antibacterial fields [20,21,22,23,24,25]. However, the strategy of applying such Cu 2 O or Cu 2 O-based nanomaterials to antibacterial fibers has yet to be proposed and demonstrated.…”

Section: Introductionmentioning

confidence: 99%

Integrating Nano-Cu2O@ZrP into In Situ Polymerized Polyethylene Terephthalate (PET) Fibers with Enhanced Mechanical Properties and Antibacterial Activities

Zhou

Fei

et al. 2019

Polymers

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The approach of in situ polymerization modification has proven to be an effective route for introducing functions for polyester materials. In this work, Cu2O@ZrP nanosheets with excellent dispersity and high antibacterial activity were integrated into in situ polymerized polyethylene terephthalate (PET) fibers, revealing an enhanced mechanical performance in comparison with the PET fibers fabricated directly via a traditional melt blending method. Additionally, such an in situ polymerized PET/Cu2O@ZrP fibers displayed highly enhanced mechanical properties; and great antibacterial activities against multi-types of bacterium, including S. aureus, E. coli and C. albicans. For the as-obtained two types of PET/Cu2O@ZrP fibers, we have detailed their molecular weight (detailed molecular weight) and dispersibility of nano-Cu2O@ZrP and fibers crystallinity was investigated by Gel chromatography (GPC), Scanning electron microscope (SEM), and X-ray diffractometer (XRD), respectively. The results showed that the aggregation of the nano-Cu2O@ZrP in the resultant PET matrix could be effectively prevented during its in situ polymerization process, hence we attribute its highly enhanced mechanical properties to its superior dispersion of nano-Cu2O@ZrP.

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Section: Introductionmentioning

confidence: 99%

Integrating Nano-Cu2O@ZrP into In Situ Polymerized Polyethylene Terephthalate (PET) Fibers with Enhanced Mechanical Properties and Antibacterial Activities

Zhou

Fei

et al. 2019

Polymers

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“…Characteristic picks appear at 2θ = 43.3°, 50.4° and 74.1°, corresponding to metallic Cu [20,30,31]. In addition, the spectrum shows peaks at 2θ = 36.44° and 61.41°, corresponding to Cu 2 O [22,32] in low concentrations. This result may be attributed to the easy oxidation of CuNPs in the atmosphere [23,24,33,34].…”

Section: Resultsmentioning

confidence: 99%

Anti-Biofouling and Desalination Properties of Thin Film Composite Reverse Osmosis Membranes Modified with Copper and Iron Nanoparticles

et al. 2019

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The anti-biofouling and desalination properties of thin film composite reverse osmosis membranes (TFC-RO), modified by the incorporation of copper and iron nanoparticles, were compared. Nanoparticles of metallic copper (CuNPs) and an iron crystalline phase mix (Fe and Fe2O3, FeNPs) were obtained by oxide-reduction-precipitation and reduction reactions, respectively, and characterized by X-ray diffraction (XRD) and transmission electron microscopy (TEM) techniques. Modified membranes (PA+0.25Cu-PSL and PA+0.25Fe-PSL) were obtained by incorporating these nanoparticles during the interfacial polymerization process (PI). These membranes were characterized by scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), atomic force microscopy (AFM), and contact angle measurements. Bactericidal tests by a Colony Forming Unit (CFU) were performed using Escherichia coli, and anti-adhesion properties were confirmed by fluorescence microscopy estimating the percentage of live/dead cells. The permeate flow and rejection of salts was evaluated using a crossflow cell. An increase of the membrane’s roughness on the modified membrane was observed, influencing the desalination performance more strongly in the presence of the FeNPs with respect to the CuNPs. Moreover, a significant bactericidal and anti-adhesion effect was obtained in presence of both modifications with respect to the pristine membrane. An important decrease in CFU in the presence of modified membranes of around 98% in both modifications was observed. However, the anti-adhesion percentage and reduction of live/dead cells were higher in the presence of the copper-modified membrane in comparison to the iron-modified membrane. These facts were attributed to the differences in antimicrobial action mechanism of these types of nanoparticles. In conclusion, TFC-RO membranes modified by the incorporation of CuNPs during PI represent one alternative material to attend to the biofouling impact in the desalination process.

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“…The TEMPO-mediated oxidation of cellulose was performed as described elsewhere (Marković et al 2017;Saito et al 2009) with minor changes. A 3 g sample of Ref.…”

Section: Tempo-mediated Oxidation and Nabh 4 Reductionmentioning

confidence: 99%

“…Carboxyl content (CC) in the oxidized textile samples (15COOH, 45COOH and 180COOH) was determined by an acid-base titration procedure adapted from calcium-acetate methods described elsewhere (Kumar and Yang 2002;Marković et al 2017;Praskalo et al 2009;Yackel and Kenyon 1942). Oxidized textile sample (500 mg) was dipped into a solution containing 50 mL of deionized water and 30 mL of 0.5 M sodium acetate solution.…”

Section: Carboxyl Content Determinationmentioning

confidence: 99%

“…In this study, cellulosic textiles were first oxidized by 2,2,6,6-tetramethylpiperidine-1-oxy radical (TEMPO)-mediated oxidation to selectively convert the primary alcohol groups located on the surface of cellulose fibrils or fibril aggregates to carboxyl groups, as described elsewhere (Marković et al 2017;Saito et al 2009). Betulin was then covalently attached onto the carboxyl-functionalized cellulose through tartaric acid-catalysed esterification (Hafrén and Córdova 2005;Hafrén et al 2006;Zhao et al 2010).…”

Section: Introductionmentioning

confidence: 99%

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Hydrophobic and antibacterial textile fibres prepared by covalently attaching betulin to cellulose

Huang

Chen

et al. 2019

Cellulose

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Betulin, a natural compound extractable from the outer bark of birch, can be used to improve the properties of cellulosic textile fibres. Herein, oxidation was performed to prepare carboxyl-functionalized cellulose, which was subsequently covalently attached by betulin through esterification. The surface-modified cellulosic textile fibres showed a substantially improved hydrophobicity, as indicated by a water contact angle of 136°. Moreover, the material showed excellent antibacterial properties, as indicated by over 99% bacterial removal and growth inhibition, in both Gram-positive and Gram-negative bacterial assays. The method of surface-modification of the cellulosic materials adapted in this study is simple and, to the best of our knowledge, has not been carried out before. The results of this study prove that betulin, a side-stream product produced by forest industry, could be used in value-added applications, such as for preparing functional materials. Additionally, this modification route can be envisaged to be applied to other cellulose sources (e.g., microfibrillated cellulose) to achieve the goal of functionalization.

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In situ synthesis of Cu/Cu2O nanoparticles on the TEMPO oxidized cotton fabrics

Cited by 51 publications

References 42 publications

Integrating Nano-Cu2O@ZrP into In Situ Polymerized Polyethylene Terephthalate (PET) Fibers with Enhanced Mechanical Properties and Antibacterial Activities

Integrating Nano-Cu2O@ZrP into In Situ Polymerized Polyethylene Terephthalate (PET) Fibers with Enhanced Mechanical Properties and Antibacterial Activities

Anti-Biofouling and Desalination Properties of Thin Film Composite Reverse Osmosis Membranes Modified with Copper and Iron Nanoparticles

Hydrophobic and antibacterial textile fibres prepared by covalently attaching betulin to cellulose

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