Synthesis and characterization of bimetallic nanocomposite and its photocatalytic, antifungal and antibacterial activity

Senthilraja, A.; Krishnakumar, B.; Hariharan, R.; Sobral, Abílio J.F.N.; Surya, C.; John, Nayomi; Shanthi, M.

doi:10.1016/j.seppur.2018.04.015

Cited by 25 publications

(5 citation statements)

References 65 publications

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“…With their large binding energy, high piezoelectric properties, biocompatibility, and non-toxicity, ZnO-NPs have become the subject of intense research due to their increased industrial potential ( Jain et al., 2020 ). Also, Ag-NPs are one of the inorganic nanomaterials of great popularity due to their excellent antimicrobial activity ( Senthilraja et al., 2018 ; Das et al., 2016 ; Tao et al., 2019 ). Together with Ag-NPs, ZnO-NPs have proved to be of formidable utility as antimicrobial substances against resistant microbial strains even at very low concentrations ( Kim et al., 2007 ; Sondi and Salopek-Sondi, 2004 ) due to their intracellular destruction of many biological pathways in microbial cells ( Liu et al., 2018 ; Huh and Kwon, 2011 ), leading to induction of long-lasting cell growth inhibition within a very short contact time ( Gunalan et al., 2012 ; Feris et al., 2010 ).…”

Section: Introductionmentioning

confidence: 99%

Biosynthesis of zinc oxide and silver/zinc oxide nanoparticles from Urginea epigea for antibacterial and antioxidant applications

Jobe¹,

Mthiyane²,

Mwanza³

et al. 2022

Heliyon

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Section: Introductionmentioning

confidence: 99%

Biosynthesis of zinc oxide and silver/zinc oxide nanoparticles from Urginea epigea for antibacterial and antioxidant applications

Jobe¹,

Mthiyane²,

Mwanza³

et al. 2022

Heliyon

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“…Silver nanoparticles (AgNPs) are one of the most attractive inorganic antibacterial materials. It has exhibited excellent antimicrobial activity against a variety of microorganisms [ 17 , 18 , 19 , 20 , 21 ]. The antimicrobial activity is significantly affected by AgNPs size.…”

Section: Introductionmentioning

confidence: 99%

Rational Design of Ag/ZnO Hybrid Nanoparticles on Sericin/Agarose Composite Film for Enhanced Antimicrobial Applications

Huang

Cai

et al. 2020

IJMS

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Silver-based hybrid nanomaterials are receiving increasing attention as potential alternatives for traditional antimicrobial agents. Here, we proposed a simple and eco-friendly strategy to efficiently assemble zinc oxide nanoparticles (ZnO) and silver nanoparticles (AgNPs) on sericin-agarose composite film to impart superior antimicrobial activity. Based on a layer-by-layer self-assembly strategy, AgNPs and ZnO were immobilized on sericin-agarose films using the adhesion property of polydopamine. Scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray powder diffraction spectroscopy were used to show the morphology of AgNPs and ZnO on the surface of the composite film and analyze the composition and structure of AgNPs and ZnO, respectively. Water contact angle, swelling ratio, and mechanical property were determined to characterize the hydrophilicity, water absorption ability, and mechanical properties of the composite films. In addition, the antibacterial activity of the composite film was evaluated against Gram-positive and Gram-negative bacteria. The results showed that the composite film not only has desirable hydrophilicity, high water absorption ability, and favorable mechanical properties but also exhibits excellent antimicrobial activity against both Gram-positive and Gram-negative bacteria. It has shown great potential as a novel antimicrobial biomaterial for wound dressing, artificial skin, and tissue engineering.

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“…Figure 8(a2) displays the photocatalytic degradation mechanism of Ba-Ag-ZnO, in which both Ag and Ba can serve as electron traps, enhancing the charge transfer at gold semicontact interfaces, thus giving rise to a higher separation rate of photogenerated electrons and holes and more reactive oxygen species (•O − 2 and •OH). After that, an enhanced photocatalytic activity of a bimetallic nanoparticle-decorated ZnO (Ag-Au/ZnO) nanocomposite for the degradation of Acid Red 18 (AR18) dye under solar light irradiation (figure 8(b1)) was also demonstrated by Senthilraja et al [176].…”

Section: Coupled With Other Noble Metalsmentioning

confidence: 76%

Ag-decorated ZnO-based nanocomposites for visible light-driven photocatalytic degradation: basic understanding and outlook

Zhang¹,

Li²,

Xu³

2022

J. Phys. D: Appl. Phys.

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The heterogeneous photocatalytic processes have exhibited tremendous potential in the field of solar energy utilization and environmental remediation. Next to TiO2, ZnO has been widely used as a promising photocatalyst material in recent years. However, several noticeable drawbacks make it less effective, such as poor solar-light harvesting, and rapid recombination of the photo-excited charge carriers. The decoration of noble metal nanoparticles on ZnO surfaces is a feasible strategy by its localized surface plasmon resonance (LSPR) absorption for aggrandizing the visible absorption of ZnO, meanwhile the formation of the Schottky barrier at the metal-semiconductor interface can effectively separate the photo-induced charge carriers. Among them, due to the high conductivity, antimicrobial activity, mechanical thermal strength and electrical double layer capacitance of silver, Ag decorated ZnO (ZnO/Ag) nano-photocatalysts have exhibited a remarkably photocatalytic efficiency and high cost performance for degradation of organic pollutants, and been endowed them with growing applications. In this review, we focus on the recent advancements (including the fundamental degradation mechanism, synthesis methods, corresponding applications and optimized strategies related to the ZnO/Ag photocatalysis) in ZnO/Ag-based photocatalysts for visible light-driven photocatalytic degradation, and concluding with a perspective on the future direction and prospects of this type of nanocomposite photocatalysts.

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Synthesis and characterization of bimetallic nanocomposite and its photocatalytic, antifungal and antibacterial activity

Cited by 25 publications

References 65 publications

Biosynthesis of zinc oxide and silver/zinc oxide nanoparticles from Urginea epigea for antibacterial and antioxidant applications

Biosynthesis of zinc oxide and silver/zinc oxide nanoparticles from Urginea epigea for antibacterial and antioxidant applications

Rational Design of Ag/ZnO Hybrid Nanoparticles on Sericin/Agarose Composite Film for Enhanced Antimicrobial Applications

Ag-decorated ZnO-based nanocomposites for visible light-driven photocatalytic degradation: basic understanding and outlook

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