Silver nanoparticles in dye effluent treatment: A review on synthesis, treatment methods, mechanisms, photocatalytic degradation, toxic effects and mitigation of toxicity

Marimuthu, Sivasankari; Antonisamy, Arul Jayanthi; Malayandi, Sankar; Rajendran, Karthikeyan; Tsai, Pei‐Chien; Pugazhendhi, Arivalagan; Ponnusamy, Vinoth Kumar

doi:10.1016/j.jphotobiol.2020.111823

Cited by 312 publications

(138 citation statements)

References 207 publications

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“…The effective conductivity of AgNPs has expanded their applications in a wide array of products such as electronic devices, inks, adhesives, pastes and in controlling microbial growth and infections 6 , 7 , which has also made them eco-friendly . Additionally, they are being added to skin creams, wound dressings, antiseptic fabrics and sprays on account of their wide antiseptic properties 8 .…”

Section: Introductionmentioning

confidence: 99%

Polyphenols profile of pomegranate leaves and their role in green synthesis of silver nanoparticles

Swilam

Nematallah

2020

Sci Rep

111

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The current study reports on polyphenols profile of pomegranate leaves (PL) Punica granatum grown in Egypt and exhibiting their role in development of an eco-friendly method of green synthesis of silver nanoparticles (AgNPs). PL aqueous alcohol extract was fractionated, the major phenolic compound was isolated from the polyphenols rich fraction (ethyl acetate fraction) and identified by conventional and spectroscopic methods of analysis as ellagic acid. Furthermore, the fraction was standardized and analysed using UPLC-PDA-UV and LC–MS-MS techniques revealing tentative identification of 23 polyphenolic compounds, quantifying ellagic acid as 43.14 ± 0.57 μg/mg of the fraction. AgNPs were successfully synthesized with the aid of polyphenols rich fraction. This is the first report revealing the systematic optimization of the green synthesis process using various independent variables. AgNPs were characterized by adopting UV–Vis spectroscopy, FTIR, XRD, and SEM, which revealed strong SPR band within average of λ max 425 nm and polygonal shaped nanoparticles of 26.22 nm size, respectively. The antimicrobial efficacies of AgNPs and polyphenols rich fraction were tested against Gram-positive bacteria (Bacillus subtilis, Staphylococcus aureus, and Sarcina lutea), Gram-negative bacteria (Salmonella paratyphi, Escherichia coli, and Pseudomonas aeruginosa) and fungi (Candida albicans). AgNPs showed a concentration-dependent activity against all the tested microorganisms.

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Section: Introductionmentioning

confidence: 99%

Polyphenols profile of pomegranate leaves and their role in green synthesis of silver nanoparticles

Swilam

Nematallah

2020

Sci Rep

111

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“…The field of nanotechnology has revolutionized almost all the aspects of human life, and their potential applications in industries such as agriculture, medicine, cosmetics, electronics, and textiles have recently gained momentum. Due to nanoparticles large surface to volume ratio, their surface reactivity is greatly enhanced resulting in extraordinary antimicrobial, antifungal, catalytic, and wound healing properties which are generally not observed in their bulk counterpart (Siddiqi et al, 2018;Marimuthu et al, 2020). Generally, nanomaterials can be synthesized either through physical, chemical, or green synthesis methods.…”

Section: Introductionmentioning

confidence: 99%

Microbial Fabrication of Zinc Oxide Nanoparticles and Evaluation of Their Antimicrobial and Photocatalytic Properties

et al. 2020

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Zinc oxide (ZnO) nanoparticles have attracted significant interest in a number of applications ranging from electronics to biomedical sciences due to their large exaction binding energy (60 meV) and wide bandgap of 3.37 eV. In the present study, we report the low-cost bacterium based "eco-friendly" efficient synthesis of ZnO nanoparticles by using the zinc-tolerant bacteria Serratia nematodiphila. The physicochemical characterization of ZnO nanoparticles was performed by employing UV-vis spectroscopy, XRD, TEM, DLS, Zeta potential, and Raman spectroscopy. The antimicrobial and antifungal studies were investigated at different concentrations using the agar well-diffusion method, whereby the microbial growth rate decreases with the increase in nanoparticle concentration. Further, photocatalytic performance studies were conducted by taking methyl orange (MO) as a reference dye.

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“…where C o represents the original concentration of DNP (mg L −1 ), C t is the remnant concentration of DNP at time t, k is the pseudo-first-order rate constant (min −1 ), and t 1/2 (min) represents the half-life of the reaction. Here, the concentration of DNP, i.e., 10,20,30,40,50,60, and 70 mg L −1 , is analyzed using the PAN-g-Alg@Ag NCs under the optimized reaction conditions. The results of the photodegradation studies are shown in Figure 8c as a plot of C t /C o against the irradiation time.…”

Section: Kinetics Of Photodegradationmentioning

confidence: 99%

A Highly Efficient Ag Nanoparticle-Immobilized Alginate-g-Polyacrylonitrile Hybrid Photocatalyst for the Degradation of Nitrophenols

et al. 2020

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Herein, we report PAN-g-Alg@Ag-based nanocatalysts synthesis via in situ oxidative free-radical polymerization of acrylonitrile (AN) using Alg@Ag nanoparticles (Alg@Ag NPs). Various analytical techniques, including FTIR, XRD, SEM, TEM, UV–Vis, and DSC, were employed to determine bonding interactions and chemical characteristics of the nanocatalyst. The optimized response surface methodology coupled central composite design (RSM–CCD) reaction conditions were a 35-min irradiation time in a 70-mg L−1 2,4-dinitrophenol (DNP) solution at pH of 4.68. Here, DNP degradation was 99.46% at a desirability of 1.00. The pseudo-first-order rate constant (K1) values were 0.047, 0.050, 0.054, 0.056, 0.059, and 0.064 min−1 with associated half-life (t1/2) values of 14.74, 13.86, 12.84, 12.38, 11.74, 10.82, and 10.04 min that corresponded to DNP concentrations of 10, 20, 30, 40, 50, 60, and 70 mg L−1, respectively, in the presence of PAN-g-Alg@Ag (0.03 g). The results indicate that the reaction followed the pseudo-first-order kinetic model with an R2 value of 0.99. The combined absorption properties of PAN and Alg@Ag NPs on copolymerization on the surface contributed more charge density to surface plasmon resonance (SPR) in a way to degrade more and more molecules of DNP together with preventing the recombination of electron and hole pairs within the photocatalytic process.

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Silver nanoparticles in dye effluent treatment: A review on synthesis, treatment methods, mechanisms, photocatalytic degradation, toxic effects and mitigation of toxicity

Cited by 312 publications

References 207 publications

Polyphenols profile of pomegranate leaves and their role in green synthesis of silver nanoparticles

Polyphenols profile of pomegranate leaves and their role in green synthesis of silver nanoparticles

Microbial Fabrication of Zinc Oxide Nanoparticles and Evaluation of Their Antimicrobial and Photocatalytic Properties

A Highly Efficient Ag Nanoparticle-Immobilized Alginate-g-Polyacrylonitrile Hybrid Photocatalyst for the Degradation of Nitrophenols

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