Surface-enhanced Raman scattering (SERS) activity of Ag, Au and Cu nanoclusters on TiO2-nanotubes/Ti substrate

Roguska, Agata; Kudelski, Andrzej; Pisarek, Marcin; Opara, Magdalena; Janik‐Czachor, M.

doi:10.1016/j.apsusc.2010.12.048

Cited by 81 publications

(40 citation statements)

References 55 publications

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“…Many groups use as reproducibly nanostructured substrates Ti or Al electrodes on which tubular arrays of oxides Handbook of Nanoelectrochemistry DOI 10.1007/978-3-319-15207-3_11-1 # Springer International Publishing Switzerland 2015 nanotubes are formed [62][63][64][65][66][67][68]. For example, Janik-Czachor et al produced tubular arrays of TiO 2 or Al 2 O 3 nanotubes with different diameters and deposited Ag, Au, or Cu clusters on them (see Fig.…”

Section: Metal Nanostructures Synthesized Using Templatesmentioning

confidence: 97%

“…For example, Janik-Czachor et al produced tubular arrays of TiO 2 or Al 2 O 3 nanotubes with different diameters and deposited Ag, Au, or Cu clusters on them (see Fig. 4) [62][63][64][65]. The nanotubes were fabricated by the electrochemical anodization (oxidation) of Ti or Al electrodes.…”

Section: Metal Nanostructures Synthesized Using Templatesmentioning

confidence: 98%

“…The nanotubes were fabricated by the electrochemical anodization (oxidation) of Ti or Al electrodes. In the case of Ti, the anodization was performed in the mixture of aqueous solution of NH 4 F and glycerol with applied voltage in the range 10-25 V [62][63][64][65]. The aluminum oxide nanotubes were fabricated by the electrochemical oxidation of Al samples at a constant voltage of 15 V in a mixture of aqueous solutions of (NH 4 ) 2 SO 4 and NH 4 F [65].…”

Section: Metal Nanostructures Synthesized Using Templatesmentioning

confidence: 99%

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Electrochemical Preparation of Nanoresonators

Kudelski

2015

Handbook of Nanoelectrochemistry

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In 1970s it was observed that the efficiency of Raman scattering for molecules placed in the optical nanoresonators may increase even more than seven orders of magnitude. Later, large increase of the efficiency of other optical processes (e.g., infrared absorption, fluorescence, or second harmonic generation) has been also reported for molecules placed in nanoresonators. Therefore, fabrication of electromagnetic nanoresonators and their applications for the construction of various analytical sensors are studied in many laboratories in the world. The first practically used electromagnetic nanoresonators have been formed electrochemically, and, although other methods have been developed since then, various types of such nanostructures are still being formed using different electrochemical methods.In this review different approaches used for the electrochemical formation of electromagnetic nanoresonators are discussed. Methods of the formation of single active-site nanoresonators, and of nanostructured surfaces containing a large number of places where the optical energy is concentrated, are presented. Fabrication of composite nanoresonators composed of at least two different materials is also briefly described.

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Section: Metal Nanostructures Synthesized Using Templatesmentioning

confidence: 97%

Section: Metal Nanostructures Synthesized Using Templatesmentioning

confidence: 98%

Section: Metal Nanostructures Synthesized Using Templatesmentioning

confidence: 99%

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Electrochemical Preparation of Nanoresonators

Kudelski

2015

Handbook of Nanoelectrochemistry

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“…7 Another SERS substrate involves the deposition of metallic thin films onto nanotubes, 8 either by wet chemistry 9 or by vacuum evaporation. 10 These techniques, however, require the preparation of nanotubes, which can be a complex process with low yields. 11,12 Instead of synthetic nanotubes, natural halloysite clay nanotubes can be used as structures for SERS substrates.…”

Section: Introductionmentioning

confidence: 99%

Natural Ceramic Nanotube Substrates for Surface-Enhanced Raman Spectroscopy

Винокуров

Копицын

Котелев

et al. 2015

JOM

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Natural halloysite clay nanotubes are cheap and available in large quantities, thus seem superior to the other nanotube-based materials. Halloysite nanotubes are used to form structured substrates for surface-enhanced Raman scattering (SERS). Specifically, layered aluminum-halloysite-(noble) metal substrates were prepared by deposition of halloysite nanotubes on aluminum foil, followed by thin metal film coatings via vacuum evaporation. The composite substrates required no capping agent on the metal surface and thus avoided background peaks in the Raman spectra, making them well suited for SERS studies. Gold-, silver-, and copper-coated substrates exhibited SERS for p-mercaptobenzoic acid, whereas uncoated and platinum-coated substrates did not. The SERS enhancement factors for the gold-, silver-, and coppercoated substrates were, by a conservative estimate, 1.4 9 10 5 , 3.5 9 10 4 , and 3.5 9 10 3 , respectively. Interestingly enough, the SERS enhancement factors of substrates decrease in a row: Au > Ag > Cu, which differ from those for the corresponding metal nanoparticles.

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“…Such a wide range of diameters makes it possible to control the porosity and surface properties of a given material. The possibility of introducing new chemical and physical properties to titanium and aluminium oxides by creating orderly nanoporous structures using the anodic polarization method, as well as that of covering the porous substrates with SERS-active metals such as Ag, Cu or Au, may lead specifically to the fabrication of attractive SERS substrates [17][18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

TiO2 and Al2O3 nanoporous oxide layers decorated with silver nanoparticles—active substrates for SERS measurements

Pisarek

Hołdyński

Roguska

et al. 2014

J Solid State Electrochem

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Self-organized nanoporous oxide layers (TiO 2 , Al 2 O 3 ) exhibiting specific properties, obtained by anodic oxidation at a constant voltage in neutral electrolyte, may serve as attractive SERS substrates for investigating the interactions between an adsorbate and adsorbent, or as a stable platform for detecting various organic compounds. This paper presents the influence of the size of the nanotubes/nanopores and the structure of the porous oxide layers on the SERS enhancement factor, E F . We used pyridine and mercaptobenzoic acid as probe molecules, since they have a large cross-section for Raman scattering. To characterize the morphology and structure of the oxide layer substrates, before and after vacuum vapor deposition of silver nanoparticles, we applied scanning electron microscopy, X-ray diffraction and surface analytical techniques: AES, XPS and SERS. The results obtained show that for the same amount of Ag (0.02 mg/cm 2 ) the size of the nanopores significantly affects the E F , which reaches, at a properly chosen nanopore size, distinctly higher values than that characteristic of a standard silver surface roughened by electrochemical cycling, i.e. E F >10 6 . The new Ag/MeO x -NT composites layer, ensure a good reproducibility of the SERS measurements and exhibit stability over a limited period of time.

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Surface-enhanced Raman scattering (SERS) activity of Ag, Au and Cu nanoclusters on TiO2-nanotubes/Ti substrate

Cited by 81 publications

References 55 publications

Electrochemical Preparation of Nanoresonators

Electrochemical Preparation of Nanoresonators

Natural Ceramic Nanotube Substrates for Surface-Enhanced Raman Spectroscopy

TiO2 and Al2O3 nanoporous oxide layers decorated with silver nanoparticles—active substrates for SERS measurements

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