Comparative SERS effectiveness of silver nanoparticles prepared by different methods: A study of the enhancement factor and the interfacial properties

Cañamares, María Vega; Garcia-Ramos, J.V.; Sánchez-Cortés, Santiago; Castillejo, Marta; Oujja, M.

doi:10.1016/j.jcis.2008.06.052

Cited by 118 publications

(75 citation statements)

References 36 publications

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“…1 In particular, pulsed laser ablation of solids in liquid environments (PLAL) has been extensively investigated as a technique for the fabrication of nanoparticles (NPs) of a large variety of materials including metals, alloys, ceramics, and semiconductors. [2][3][4][5][6][7][8][9][10][11][12][13] Remarkable advantages of this method over chemical synthesis rely on the simplicity of the procedure, the weak agglomeration effects, and the lack of impurities caused by chemical precursors. The pioneering work on PLAL for materials processing on the stabilizing agent.…”

Section: Introductionmentioning

confidence: 99%

Platinum Nanoparticles as Photoactive Substrates for Mass Spectrometry and Spectroscopy Sensors

et al. 2014

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Aqueous suspensions of platinum colloidal nanoparticles of varying size and polydispersity have been produced by ablation of a platinum target with a nanosecond Q-switched Nd:YAG laser. Several laser wavelengths (1064, 532 and 266 nm) and stabilizing agents (citrate and polymers PEG, PVA and PVP) were employed. Laser ablation with the infrared and visible wavelengths leads to spherical amorphous nanoparticles with a bimodal distribution of diameters, featuring a global maximum in the range 5-10 nm and a shoulder extending to 25 nm. Such bimodal distributions plausibly arise from thermal and explosive vaporization mechanisms occurring in different time scales, as proposed in earlier studies.Ultraviolet ablation of Pt at 266 nm, reported here for the first time, produces crystalline nanoparticles of small size (1-4 nm diameter), with a weak onset of larger particles (6-8 nm). The ablation at 266 nm also produced an appreciable yield of large rod-like particles of size ∼ 10 x 70 nm 2 , especially in the presence of PEG and PVA. The Pt nanoparticles served to fabricate films capable of assisting the laser desorption ionization (LDI) of a model peptide. The best analytical performance for LDI mass spectrometric detection was obtained with Pt nanoparticles surface functionalized with citrate and PVA.

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Section: Introductionmentioning

confidence: 99%

Platinum Nanoparticles as Photoactive Substrates for Mass Spectrometry and Spectroscopy Sensors

et al. 2014

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“…But recently developed laser ablation synthesis route in liquid media has introduced a new prospect for production of pure active nanoparticles such as Al, provided that appropriate synthesis parameters are opted 5 . Ease of operation, controlling the size of nanoparticles by adjusting parameters, and feasibility of synthesis of pure, oxide, carbide, or alloy nanoparticles are the most important advantages of this technique [5][6][7][8][9][10][11][12] .…”

Section: Introductionmentioning

confidence: 99%

“…Synthesis parameters such as laser wavelength, laser energy, pulse width, liquid media type, and ablation time can significantly affect the product characteristics [5][6][7][8][9][10][11][12] .…”

Section: Introductionmentioning

confidence: 99%

EFFECT OF LASER WAVELENGTH AND ABLATION TIME ON PULSED LASER ABLATION SYNTHESIS OF AL NANOPARTICLES IN ETHANOL

Baladi

Sarraf-Mamoory

2012

Int. J. Mod. Phys. Conf. Ser.

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Aluminum nanoparticles were synthesized by pulsed laser ablation of Al targets in ethanol for 5-15 minutes using the 1064 and 533 nm wavelengths of a Nd:YAG laser with energies of 280-320 mJ per pulse. It has been found that higher wavelength leads to significantly higher ablation efficiency, and finer spherical nanoparticles are also synthesized. Besides, it was obvious that higher ablation time resulted in higher ablated mass, while lower ablation rate was observed. Finer nanoparticles, moreover, are synthesized in higher ablation times.

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“…The idea of making SERS-active silver nano-structures 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 5 by photo-reduction is not new. Photo-reduced silver nano-particles were deposited by other authors onto glass substrates [25][26][27] or silica nano-particles 28 and were used for SERS detection on cellulose 25 or textile surfaces. 29,30 Positively charged silver nano-particles prepared by photoreduction were also reported.…”

Section: Acs Paragon Plus Environment Langmuirmentioning

confidence: 99%

Optically Trapped Surface-Enhanced Raman Probes Prepared by Silver Photoreduction to 3D Microstructures

Vizsnyiczai

Lestyán

Joniová³

et al. 2015

Langmuir

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3D microstructures partially covered by silver nano-particles have been developed and tested for surface-enhanced Raman spectroscopy (SERS) in combination with optical tweezers. The microstructures made by two-photon polymerization of SU-8 photoresist were manipulated in a dual beam optical trap. The active area of the structures was covered by a SERS-active silver layer using chemically assisted photo-reduction from silver nitrate solutions. Silver layers of different grain size distributions were created by changing the photo-reduction parameters and characterized by scanning electron microscopy. The structures were tested by measuring the SERS spectra of emodin and hypericin.

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Comparative SERS effectiveness of silver nanoparticles prepared by different methods: A study of the enhancement factor and the interfacial properties

Cited by 118 publications

References 36 publications

Platinum Nanoparticles as Photoactive Substrates for Mass Spectrometry and Spectroscopy Sensors

Platinum Nanoparticles as Photoactive Substrates for Mass Spectrometry and Spectroscopy Sensors

EFFECT OF LASER WAVELENGTH AND ABLATION TIME ON PULSED LASER ABLATION SYNTHESIS OF AL NANOPARTICLES IN ETHANOL

Optically Trapped Surface-Enhanced Raman Probes Prepared by Silver Photoreduction to 3D Microstructures

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