Silver-attached reduced graphene oxide nanocomposite as an eco-friendly photocatalyst for organic dye degradation

Jose, Priya Parvathi Ameena; Kala, M. S.; Kalarikkal, Nandakumar; Thomas, Sabu

doi:10.1007/s11164-018-3443-8

Cited by 38 publications

(7 citation statements)

References 75 publications

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“…The peak at 1611 cm −1 is due to C=C sp 2 hybridized carbon on the reduced graphene oxide surface. The peak at 1031 cm −1 indicates stretching vibration from the C–O–C bonds of epoxy or alkoxy groups . No characteristic Ag peaks was expected in FTIR spectra.…”

Section: Resultsmentioning

confidence: 98%

“…The peak at 1031 cm À 1 indicates stretching vibration from the C-O-C bonds of epoxy or alkoxy groups. [25] No characteristic Ag peaks was expected in FTIR spectra. Thus, these peaks indicate the formation of reduced graphene oxide using exfoliation from graphite and strong interaction of Ag NPs to the surface hydroxyl groups of graphene.…”

Section: Structural Elucidation Thermal Morphological Studiesmentioning

confidence: 99%

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Enhanced Photocatalytic Activity of Electrospun PAN/Ag‐G NFs Under Solar Irradiation for Effective Degradation of Hazardous Organic Dyes

2020

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Solar light induced organic pollutant degradation is an ideal approach for wastewater treatment and environmental challenges. The as-synthesized nanofibers (NFs) exhibited significant photocatalytic activity towards both the dyes (anionic and cationic) under solar light irradiation. Present work reports, preparation of AgÀ G nanoparticles (NPs) impregnated in PAN NFs using electrospinning technique. The recyclability of AgÀ G NPs impregnated PAN NFs becomes very easier due to formation PAN NFs mat with impregnation of highly porous structure of AgÀ G NPs as compared to powder catalyst. The as-prepared PAN/AgÀ G NFs were subjected for structural, optical and morphological study. Under solar light irradiation, PAN/ AgÀ G NFs shows excellent photocatalytic performance of methylene blue (MB) (88.19%, 75mins) and methyl orange (MO) dyes (82.5%, 90 min) degradation respectively. TOC values and rate constants of the samples indicate the superior catalytic efficiency as compared to AgÀ G NPs and PAN NFs. Under solar radiation, mechanism and plausible pathway of photocatalytic dye degradation is also reported.

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Section: Resultsmentioning

confidence: 98%

Section: Structural Elucidation Thermal Morphological Studiesmentioning

confidence: 99%

Enhanced Photocatalytic Activity of Electrospun PAN/Ag‐G NFs Under Solar Irradiation for Effective Degradation of Hazardous Organic Dyes

2020

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“…The green synthesis method is facile, rapid, and environmentally benign. In addition, green synthesized AgNPs decorated on carbon-based materials are widely used in various applications such as photocatalytic (AgNPs/g-C 3 N 4; Ag decorated rGO) [15,16], catalytic dye degradation (AgNPs/GO) [17], antibacterial (AgNPs/MWCNTs) [18], electrochemical sensing (AgNPs/rGO) [19], anticancer (AgNPs/rGO) [20], and cytotoxic (AgNPs/GO) [21], sensing of heavy metals (Ag@rGONCs) [22], and photocatalytic bacteria inactivation studies [13].…”

Section: Introductionmentioning

confidence: 99%

Green synthesized AgNPs decorated on Ketjen black for enhanced catalytic dye degradation

Ramaraghavulu¹,

Rao

Devarayapalli

et al. 2020

Res Chem Intermed

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The green synthesis of nanoparticles using plant-based materials as an alternative to chemical and physical routes provides economic and environmental benefits. In the present study, silver nanoparticles (AgNPs) were fabricated using Pseudocydonia sinensis fruit extract. The fabricated NPs were then decorated on commercial Ketjen black-300 (AgNPs@KB-300) and Ketjen black-600 (AgNPs@ KB-600). The synthesized materials were characterized via XRD, FTIR, XPS, SEM-EDX, and HR-TEM studies. The SEM and HR-TEM results revealed that the synthesized AgNPs were spherical and successfully decorated on KB-300 and KB-600. Additionally, the catalytic ability of the synthesized samples during the degradation of methyl orange in the presence of NaBH 4 was studied. Notably, the catalytic activity of AgNPs@ KB-600 was higher than that of AgNPs@ KB-300.

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“…Visible-light photocatalysis using sunlight as a light source in wastewater treatment has been regarded as an economic and an effective technology (Zheng et al 2020 ). Very good results were obtained in the photodegradation of IC under sunlight exposure using AgNP on reduced graphene oxide (Ag-rGO) as catalyst (Jose et al 2018 ), in the presence of sodium borohydride to initiate the photodegradation process. Also, Alsohaimi and co-workers ( 2020 ) studied the decolorization of IC using silver nanoparticles imprinted calcium oxide (Ag-CaO) under sunlight.…”

Section: Resultsmentioning

confidence: 99%

Valorization of plant by-products in the biosynthesis of silver nanoparticles with antimicrobial and catalytic properties

Rocha,

Ferreira-Santos,

Aguiar

et al. 2024

Environ Sci Pollut Res

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Biosynthesis based on natural compounds has emerged as a sustainable approach for the production of metallic nanoparticles (MNP). The main objective of this study was to biosynthesize stable and multifunctional silver nanoparticles (AgNP) using different plant by-products as reducers and capping agents. Extracts obtained from Eucalyptus globulus, Pinus pinaster, Citrus sinensis, Cedrus atlantica and Camellia sinensis by-products, were evaluated. From all plant by-products tested, aqueous extract of eucalyptus leaves (EL), green tea (GT) and black tea (BT) were selected due to their higher antioxidant phenolic content and were individually employed as reducers and capping agents to biosynthesize AgNP. The green AgNP showed zeta potential values of -31.8 to -36.3 mV, with a wide range of particle sizes (40.6 to 86.4 nm), depending on the plant extract used. Green AgNP exhibited an inhibitory effect against various pathogenic bacteria, including Gram-negative (P. putida, E. coli, Vibrio spp.) and Gram-positive (B. megaterium, S. aureus, S. equisimilis) bacteria with EL-AgNP being the nanostructure with the greatest antimicrobial action. EL-AgNP showed an excellent photodegradation of indigo carmine (IC) dye under direct sunlight, with a removal percentage of up to 100% after 75 min. A complete cost analysis revealed a competitive total cost range of 8.0–9.0 €/g for the biosynthesis of AgNP. Graphical Abstract

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Silver-attached reduced graphene oxide nanocomposite as an eco-friendly photocatalyst for organic dye degradation

Cited by 38 publications

References 75 publications

Enhanced Photocatalytic Activity of Electrospun PAN/Ag‐G NFs Under Solar Irradiation for Effective Degradation of Hazardous Organic Dyes

Enhanced Photocatalytic Activity of Electrospun PAN/Ag‐G NFs Under Solar Irradiation for Effective Degradation of Hazardous Organic Dyes

Green synthesized AgNPs decorated on Ketjen black for enhanced catalytic dye degradation

Valorization of plant by-products in the biosynthesis of silver nanoparticles with antimicrobial and catalytic properties

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