One-pot synthesis of poly vinyl alcohol (PVA) supported silver nanoparticles and its efficiency in catalytic reduction of methylene blue

Sagitha, P.; Sarada, K.; Muraleedharan, K.

doi:10.1016/s1003-6326(16)64397-2

Cited by 52 publications

(19 citation statements)

References 48 publications

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“…The absorbance (At) at λ 664 nm (which is proportional to the concentration of MB) in each minute after the addition of catalyst is noted and pseudo‐first order rate constant (k app ) for decolorization of MB was determined by plotting ln(A t ) against time (Figure ). The apparent rate constant calculated for PNA‐20Ag catalyzed reduction of MB was 0.1686 min ‐1 , and the result is comparable to some reported catalytic studies …”

Section: Resultssupporting

confidence: 88%

Synthesis of novel poly(1‐naphthylamine)‐silver nanocomposites and its catalytic studies on reduction of 4‐nitrophenol and methylene blue

Saidu

Joseph²,

Thomas³

2019

J of Applied Polymer Sci

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A novel poly(1‐naphthylamine)‐silver (PNA‐Ag) nanocomposite has been prepared and used as a heterogeneous catalyst for the reduction of 4‐nitrophenol (4‐NP) and methylene blue (MB). In this study, silver nanoparticles (AgNPs) have been incorporated to PNA via a simple and fast one‐step route, where PNA acts as the reductant for silver ions and stabilizer for AgNPs. The prepared PNA‐Ag nanocomposites were characterized using scanning electron microscopy (SEM), transmission electron microscopy (TEM), X‐ray diffraction (XRD), thermogravimetric analysis (TGA), energy dispersive X‐ray scattering (EDAX), and Fourier transform infrared (FTIR) spectroscopy. They provided ample evidence for the anchoring of AgNPs to the PNA chains. Enhanced electrochemical performance of the PNA‐Ag nanocomposite has been evidenced by cyclic voltammetry studies. Catalytic studies confirmed that the rate of reduction of both 4‐NP and MB with sodium borohydride have been enhanced significantly in the presence of AgNPs loaded PNA in comparison to neat PNA. This nanocomposite could find application as catalyst for reductive degradation of toxic organic pollutants. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48318.

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Section: Resultssupporting

confidence: 88%

Synthesis of novel poly(1‐naphthylamine)‐silver nanocomposites and its catalytic studies on reduction of 4‐nitrophenol and methylene blue

Saidu

Joseph²,

Thomas³

2019

J of Applied Polymer Sci

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“…The preparation methods reported thus far can be divided into two categories: simultaneous and successive [55]. The simultaneous methods involve precursors of the two metals that are present in the same reaction system with or without protective agents; examples include chemical synthesis by co-reduction (citrate reduction [56], alcohol reduction [57], and polyol process [58]), sonochemical synthesis [59,60], thermal decomposition [61,62], microwave irradiation [63], and radiolytic synthesis [64]. The successive methods involve reducing metal ions over the surface of other nuclei followed by particle growth over time.…”

Section: Synthesis Of Bimetallic Nanoparticlesmentioning

confidence: 99%

Bimetallic Nanoparticles: Enhanced Magnetic and Optical Properties for Emerging Biological Applications

et al. 2018

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Metal nanoparticles are extensively studied due to their unique chemical and physical properties, which differ from the properties of their respective bulk materials. Likewise, the properties of heterogeneous bimetallic structures are far more attractive than those of single-component nanoparticles. For example, the incorporation of a second metal into a nanoparticle structure influences and can potentially enhance the optical/plasmonic and magnetic properties of the material. This review focuses on the enhanced optical/plasmonic and magnetic properties offered by bimetallic nanoparticles and their corresponding impact on biological applications. In this review, we summarize the predominant structures of bimetallic nanoparticles, outline their synthesis methods, and highlight their use in biological applications, both diagnostic and therapeutic, which are dictated by their various optical/plasmonic and magnetic properties.

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“…Both Figure 4 (a) and (b) reveal that the AgNPs are well dispersed and spherical in shape. The average particle size of the AgNPs is 19.3 ± 2.7 nm, calculated using ImageJ software.The size of these green synthesized AgNPs are comparable to the AgNPs that used PVA,a synthetic polymer as the reducing agent produced by Sagitha and coworkers [20].…”

Section: Field Emission Scanning Electron Microscope (Fesem) Analysismentioning

confidence: 52%

Green Synthesis of Silver Nanoparticles Using Sago (Metroxylon Sagu) via Autoclaving Method

Jamaludin

Faizal

2018

IIUMEJ

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Sago (metroxylon sagu) is a polysaccharide bio resource, which is biodegradable and low in toxicity that can be found in large scale in Mukah, Sarawak. A simple green method of synthesizing silver nanoparticles (AgNPs) has been developed using sago dissolved in water as the reducing agent. The mixture of dissolved sago and silver nitrate (AgNO3) were autoclaved at 121 °C for 20 minutes. The size, morphology and structures of the AgNPs formed in the sago solution were investigated through UVVis spectrophotemeter, XRD and FESEM analysis. The synthesized AgNPs were spherical in shape and well distributed with average particle sizes of 19.3 ± 2.7 nm.ABSTRAK: Sago (Pokok Rumbia) adalah sumber bio polisakarida yang bioterurai dan rendah ketoksikan yang boleh didapati dalam skala yang besar di Mukah, Sarawak. Satu kaedah hijau yang mudah untuk mensintesis nanopartikel perak telah dihasilkan dengan menggunakan sagu yang larut dalam air sebagai ejen penurunan. Campuran sagu yang dilarutkan dan perak nitrat (AgNO3) telah autoklaf pada suhu 121°C selama 20 minit. Saiz, morfologi dan struktur nanopartikel perak yang terhasil di dalam larutan sago telah disiasat melalui analisis spektrofotometer UV-Vis, XRD dan FESEM. Nanopartikel perak yang dihasilkan adalah berbentuk bulat dengan purata saiz partikel 19.3 ± 2.7 nm.

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One-pot synthesis of poly vinyl alcohol (PVA) supported silver nanoparticles and its efficiency in catalytic reduction of methylene blue

Cited by 52 publications

References 48 publications

Synthesis of novel poly(1‐naphthylamine)‐silver nanocomposites and its catalytic studies on reduction of 4‐nitrophenol and methylene blue

Synthesis of novel poly(1‐naphthylamine)‐silver nanocomposites and its catalytic studies on reduction of 4‐nitrophenol and methylene blue

Bimetallic Nanoparticles: Enhanced Magnetic and Optical Properties for Emerging Biological Applications

Green Synthesis of Silver Nanoparticles Using Sago (Metroxylon Sagu) via Autoclaving Method

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