Microwave-assisted Synthesis Silver Nanoparticles and Their Surface Enhancement Raman Scattering

Faxian, Liu; Liu, Jie; Cao, Xueling

doi:10.1016/s1875-5372(17)30204-7

Cited by 22 publications

(7 citation statements)

References 19 publications

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“…Our experience in the microwave-assisted synthesis of silver nanoparticles [22] allowed using a simple precursor and reducer -silver nitrate and sodium citrate. The optimal molar ratio of the reagents (10 : 10 mM) was chosen by Faxian's protocol [23]. Because both salts are soluble in water, a mixture of ethylene glycol and polyvinylpyrrolidone in an aqueous medium was taken.…”

Section: Resultsmentioning

confidence: 99%

Microwave synthesis of silver core-silica decorated nanoparticles

Daublytė¹,

Zdaniauskienė²,

Charkova³

2022

chemija

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The silver nanospheres (70 ± 5 nm) were synthesised and decorated with silica under microwave irradiation. The obtained silver core-silica decorated nanoparticles (80 ± 5 nm) were applied for 4-mercaptobenzoic acid monolayer analysis by shell-isolated nanoparticle-enhanced Raman spectroscopy. A detailed protocol of synthesis, characterisation by UV/Vis, HR-TEM and Raman techniques are represented here.

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Section: Resultsmentioning

confidence: 99%

Microwave synthesis of silver core-silica decorated nanoparticles

Daublytė¹,

Zdaniauskienė²,

Charkova³

2022

chemija

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“…This shows that more energy is needed to produce sharp peak of AgNPs. By increasing the microwave time exposure until 17 minutes, the absorbance peak become increases [12]. Based on Figure 4, by increasing exposure time towards microwave irradiation from 3 to 17 minutes, the darker the colour of colloidal solution.…”

Section: Uv-vis Analysis Formentioning

confidence: 88%

“…The employment of starch in synthesizing AgNPs using microwave method is inexpensive, renewable, natural-occurring and non-toxic as chemical method [12]. Microwaveirradiated AgNPs can be synthesized rapidly with uniform size that do not require high temperature and pressure [12]. Therefore, in these study, AS mediated AgNPs was produced using microwave irradiation method.…”

Section: Introductionmentioning

confidence: 99%

“…The occurrence has led to other initiatives in employing microwave method and carbohydrate compound such as starch to be part as reducing and capping agent. The employment of starch in synthesizing AgNPs using microwave method is inexpensive, renewable, natural-occurring and non-toxic as chemical method [12]. Microwaveirradiated AgNPs can be synthesized rapidly with uniform size that do not require high temperature and pressure [12].…”

Section: Introductionmentioning

confidence: 99%

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Preparation and characterization of acetylated starch mediated silver nanoparticles: The effect of solution ratio and time-varying exposure

Tarmizi

Burhanuddin

Shahrul

et al. 2022

J. Phys.: Conf. Ser.

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Plastic packaging is widely used in food industry to protect and maintain food freshness. However, plastic packaging also contributes to solid waste problem and can become the contamination area of microbial activities which in turn affecting the shelf-life of the food product and may causing food-borne illness towards consumer. Thus, the demands on biodegradable polymer as plastic packaging has grown widely especially among the food industry. The employment of silver nanoparticles (AgNPs) can improve physical properties of biopolymer as well as promoting antimicrobial properties on the plastic packaging. The aim of this study is to synthesize of AgNPs by utilising acetylated starch (AS) as reducing agent with different parameters via microwave irradiation method. The effect of different ratio of acetylated starch and microwave time-varying exposure is evaluated. The synthesized silver nanoparticles were characterized via UV-VIS spectroscopy (UV-VIS), X-Ray Diffraction (XRD) and Fourier Transform Infrared (FTIR) analysis. The absorbance peak emerges at 420nm on UV-VIS shows that silver nanoparticles is successfully produced. 15 minutes microwave time exposure and 1:1 ratio is identified as the optimum condition to produce silver nanoparticles. The peak emerges on FTIR spectra shows the involvement of starch in reduction process in synthesizing AgNPs. The XRD results shows the amorphous structure of starch and crystalline peak of silver appear in 2Θ regions 37.4°, 43.4°, 63.1° and 75.7°. In conclusion, the significant outcome from the study is the AgNPs were successfully synthesized via microwave irradiation method and be a function of time varying exposure and acetylated starch ratio.

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“…The microwave-assisted synthesis of nanoparticles is by now an established method for the synthesis of uniform metal nanoparticles in solution, which can be applied to fabricate SERS substrates by drop-coating and self-assembly procedures [20][21][22]. Alternatively, monolayers of nanoparticles can be formed directly on substrates by a microwave-assisted one-step fabrication process [23,24] on glass and silicon-based substrates with different shapes (e.g., on flat substrates as well as inside glass capillaries or on scanning force microscopy tips) in a very economic and fast (less than five minutes) coating process.…”

Section: Introductionmentioning

confidence: 99%

On the stability of microwave-fabricated SERS substrates – chemical and morphological considerations

Wang

Womiloju

Höppener

et al. 2021

Beilstein J. Nanotechnol.

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The stability of surface-enhanced Raman spectroscopy (SERS) substrates in different organic solvents and different buffer solutions was investigated. SERS substrates were fabricated by a microwave-assisted synthesis approach and the morphological as well as chemical changes of the SERS substrates were studied. It was demonstrated that the SERS substrates treated with methanol, ethanol, or N,N-dimethylformamide (DMF) were comparable and showed overall good stability and did not show severe morphological changes or a strong decrease in their Raman activity. Toluene treatment resulted in a strong decrease in the Raman activity whereas dimethyl sulfoxide (DMSO) treatment completely preserved or even slightly improved the Raman enhancement capabilities. SERS substrates immersed into phosphate-buffered saline (PBS) solutions were observed to be rather instable in low and neutral pH buffer solutions. Other buffer systems showed less severe influences on the SERS activity of the substrates and a carbonate buffer at pH 10 was found to even improve SERS performance. This study represents a guideline on the stability of microwave-fabricated SERS substrates or other SERS substrates consisting of non-stabilized silver nanoparticles for the application of different organic solvents and buffer solutions.

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Microwave-assisted Synthesis Silver Nanoparticles and Their Surface Enhancement Raman Scattering

Cited by 22 publications

References 19 publications

Microwave synthesis of silver core-silica decorated nanoparticles

Microwave synthesis of silver core-silica decorated nanoparticles

Preparation and characterization of acetylated starch mediated silver nanoparticles: The effect of solution ratio and time-varying exposure

On the stability of microwave-fabricated SERS substrates – chemical and morphological considerations

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