Remarkably improvement in antibacterial activity by synergistic effect in n-Cu@T-ZnO nanocomposites

Yu, Qihui; Xu, Xiaoling; Wang, Chuan‐Zeng; Ma, Yanjiao; Hui, David; Zhou, Zuowan

doi:10.1016/j.compositesb.2016.10.085

Cited by 41 publications

(25 citation statements)

References 37 publications

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“…Copper and cuprous oxide are a metallic and metallic oxide nanoparticles with very good properties such as antibacterial, antifungal, electrical and thermal properties that are cheaper than gold and silver nanoparticles . Also, the cuprous oxide is a promising photocatalytic metal oxide with a narrow direct band gap of 1.9 to 2.2 eV for degradation of dyes under the sunlight irradiation …”

Section: Introductionmentioning

confidence: 99%

Amidohydroxylated polyester with biophotoactivity along with retarding alkali hydrolysis through in situ synthesis of Cu/Cu₂O nanoparticles using diethanolamine

Rezaie

Montazer

2017

J of Applied Polymer Sci

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In this research, polyester fabric was modified through in situ synthesis of Cu/Cu 2 O nanoparticles (NPs) in one single step processing using diethanolamine. This introduced amide and hydroxyl active groups on the polyester surface, adjusted pH, aminolyzed, and improved the surface activity of polyester. Copper sulfate was used as precursor, sodium hypophosphite as a reducing agent and polyvinylpyrrolidone as a stabilizer in a chemical reduction route at boil as a facile and cost-effective approach. The central composite design was also utilized to optimize the processing conditions and study the effect of each variables on the weight gain, color change, and wettability of the treated fabrics. FESEM and mapping, EDX, XRD, and FTIR analysis confirmed effective assembling of Cu/Cu 2 O NPs on the amidohydroxylated polyester surface. The optimum treated fabric showed excellent antibacterial properties on both Staphylococcus aureus and Escherichia coli. In addition, a very good photocatalytic activity towards degradation of methylene blue solution obtained after 24 h sunlight irradiation. Further, the hydrophilicity, mechanical properties and stability of the treated fabrics in concentrated sodium hydroxide improved through formation of amidohydroxyl active groups, amidoester crosslinking and nanocross-linking within polymeric chains through in situ synthesis of Cu/Cu 2 O.

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Section: Introductionmentioning

confidence: 99%

Amidohydroxylated polyester with biophotoactivity along with retarding alkali hydrolysis through in situ synthesis of Cu/Cu₂O nanoparticles using diethanolamine

Rezaie

Montazer

2017

J of Applied Polymer Sci

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“…Except for organic dyes, microbial contamination of water is also an important problem in environmental protection and human health. Previous reports have shown that zinc ion has good antibacterial properties ,. Nowadays, graphene and GO have also been demonstrated to show strong antibacterial performance .…”

Section: Resultsmentioning

confidence: 99%

Environmental‐Friendly Assembly of Functional Graphene Hydrogels with Excellent Antibacterial Properties

Gao

Mei

et al. 2017

ChemistrySelect

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Bacterial contamination, harmful to human beings health and well‐being, has been a serious issue in china, even in the modern world. Graphene‐based materials have been found to have good antimicrobial properties. However, the research on three‐dimensional graphene related material with excellent antimicrobial activity is quite limited, which hinders its usage in protection of environment and sustainable development, such as in water treatment. In this work, we successfully design a facile, green and efficient strategy to fabricate three‐dimensional graphene hydrogel monoliths with excellent antibacterial properties by zinc ions coordination. The presence of zinc ions can maintain the structural integrity and the resulting sample exhibits excellent antimicrobial activities toward E. coli (99.5 ±3.6 %) and S. aureus (96.4 ±4.6 %) with increased glutathione oxidation capacity. The mechanism is also intensively investigated. The whole preparation process is carried out without using any toxic reducing agent, which may offer an alternative strategy for the fabrication of graphene related materials with excellent antibacterial properties.

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“…In another study by Gupta et al, 45 on exposing the E. coli cells to N and Cu co-doped ZnO NPs under visible light irradiation, E. coli becomes inactive. The synergistic antibacterial effect of Cu@T-ZnO nanocomposites for both Gram-negative and Gram-positive bacteria was shown by Yu et al 46 Most importantly, the authors have positively proven them to have significant potential as bactericidal agent, 7 exemplifying a biocidal action of these particles against E. coli ATCC-25922 and Bacillus cereus ATCC-10876. The aim of this work was to study the interaction between bacteria and NPs by scanning electron microscopy (SEM) and optical method.…”

Section: Introductionmentioning

confidence: 90%

Zinc Oxide-Supported Copper Clusters with High Biocidal Efficacy for Escherichia coli and Bacillus cereus

et al. 2017

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Cu clusters on ZnO have been prepared by a simple low-temperature solid-state reaction from their respective acetate precursors. The formation of metallic Cu along with a small quantity of CuO was influenced by the presence of the zinc acetate precursor. Although there is a lack of formation of any metallic Cu in the absence of zinc acetate, increase in the heating duration helps in the formation of increased metallic Cu. A mechanism for formation of the Cu@ZnO nanocomposite has been suggested. The prepared Cu@ZnO nanocomposite, with metallic Cu, was identified by X-ray diffraction studies followed by confirmation of clusters of the kind Cu9 and Cu18 by transmission electron microscopy and matrix-assisted laser desorption ionization time-of-flight mass spectrometry. The photoelectron spectroscopy is able to clearly distinguish the Cu from CuO, which is very well complimented by electron spin resonance analysis. The morphological feature of ZnO changes from flakes to rods on increasing the duration of heating, as shown by scanning electron microscopy (SEM) analysis. The observed Cu plasmonic band in UV–vis diffuse reflectance gets blue-shifted to 463 nm from its normally observed position of 550–580 nm possibly due to cluster formation and interaction with ZnO, the band gap of the latter getting red-shifted to 3.2–3.0 eV. The antibacterial activity of the synthesized Cu cluster–ZnO nanocomposites was investigated against Escherichia coli ATCC-25922 for Gram-negative and Bacillus cereus ATCC-10876 for Gram-positive bacteria. Tests were performed on a nutrient agar medium and liquid broth supplemented with different concentrations of nanoparticles. SEM analysis of the native and treated Gram-positive and Gram-negative bacteria established a high efficacy of biocide activity in 24 h, with 200 μg/mL of Cu@ZnO nanocomposites.

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Remarkably improvement in antibacterial activity by synergistic effect in n-Cu@T-ZnO nanocomposites

Cited by 41 publications

References 37 publications

Amidohydroxylated polyester with biophotoactivity along with retarding alkali hydrolysis through in situ synthesis of Cu/Cu₂O nanoparticles using diethanolamine

Amidohydroxylated polyester with biophotoactivity along with retarding alkali hydrolysis through in situ synthesis of Cu/Cu₂O nanoparticles using diethanolamine

Environmental‐Friendly Assembly of Functional Graphene Hydrogels with Excellent Antibacterial Properties

Zinc Oxide-Supported Copper Clusters with High Biocidal Efficacy for Escherichia coli and Bacillus cereus

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Remarkably improvement in antibacterial activity by synergistic effect in n-Cu@T-ZnO nanocomposites

Cited by 41 publications

References 37 publications

Amidohydroxylated polyester with biophotoactivity along with retarding alkali hydrolysis through in situ synthesis of Cu/Cu2O nanoparticles using diethanolamine

Amidohydroxylated polyester with biophotoactivity along with retarding alkali hydrolysis through in situ synthesis of Cu/Cu2O nanoparticles using diethanolamine

Environmental‐Friendly Assembly of Functional Graphene Hydrogels with Excellent Antibacterial Properties

Zinc Oxide-Supported Copper Clusters with High Biocidal Efficacy for Escherichia coli and Bacillus cereus

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Product

Resources

About

Amidohydroxylated polyester with biophotoactivity along with retarding alkali hydrolysis through in situ synthesis of Cu/Cu₂O nanoparticles using diethanolamine

Amidohydroxylated polyester with biophotoactivity along with retarding alkali hydrolysis through in situ synthesis of Cu/Cu₂O nanoparticles using diethanolamine