Special Issue "Preparation and Application of Noble Metal and Semi-Conductive Nanoparticles"

A special issue of Nanomaterials (ISSN 2079-4991).

Deadline for manuscript submissions: 5 January 2020.

Special Issue Editor

Guest Editor
Dr. Karolína Machalová Šišková Website E-Mail
Department of Biophysics, Faculty of Science, University of Palacky in Olomouc, Olomouc, Czech Republic
Interests: Noble metal and iron-containing nanoparticles - preparation and physicochemical characterization; infrared absorption spectroscopy; Raman spectroscopy and surface-enhanced Raman spectroscopy; laser ablation; surface modification of nanoparticles; preparation and application of semi-conductive nanoparticles.

Special Issue Information

Dear Colleagues,

Nanoparticles and nanostructures (e.g., nanoclusters, nanocrystals, and nanosponges) represent a blossoming field of science in general and nanoscience in particular. Noble metal and semi-conductive nanoparticles have been prepared and applied in different fields for a very long time already. Nevertheless, the topic is still very appealing, as new types of their preparation and application emerge. On the one hand, simple and rapid syntheses, suitable for scaling-up, have been published; on the other hand, sophisticated methods of nanoparticles preparation and the surface-modification of nanostructures for specific demands have been introduced. Due to a bundle of characterization techniques enabling a deeper insight into nanoparticles formation, customized and optimized nanoparticles syntheses for specified applications have been realized. This Special Issue of Nanomaterials is focused on the preparation and application of noble metal nanoparticles, semi-conductive nanoparticles, and nanostructures. The format of welcomed contributions includes communications, full-length articles, and reviews.

Dr. Karolína Machalová Šišková
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

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Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Nanoparticle synthesis
  • Noble metal nanoparticles
  • Noble metal nanoclusters
  • Noble metal nanocrystals
  • Noble metal nanosponges
  • Gold nanostructures
  • Silver nanostructures
  • Semi-conductive nanostructures
  • Synthesis of quatum dots
  • Semi-conductive nanoparticles.

Published Papers (2 papers)

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Research

Open AccessArticle
Morphology-Tailored Gold Nanoraspberries Based on Seed-Mediated Space-Confined Self-Assembly
Nanomaterials 2019, 9(9), 1202; https://doi.org/10.3390/nano9091202 - 27 Aug 2019
Abstract
Raspberry-like structure, providing a high degree of symmetry and strong interparticle coupling, has received extensive attention from the community of functional material synthesis. Such structure constructed in the nanoscale using gold nanoparticles has broad applicability due to its tunable collective plasmon resonances, while [...] Read more.
Raspberry-like structure, providing a high degree of symmetry and strong interparticle coupling, has received extensive attention from the community of functional material synthesis. Such structure constructed in the nanoscale using gold nanoparticles has broad applicability due to its tunable collective plasmon resonances, while the synthetic process with precise control of the morphology is critical in realizing its target functions. Here, we demonstrate a synthetic strategy of seed-mediated space-confined self-assembly using the virus-like silica (V-SiO2) nanoparticles as the templates, which can yield gold nanoraspberries (AuNRbs) with uniform size and controllable morphology. The spikes on V-SiO2 templates serve dual functions of providing more growth sites for gold nanoseeds and activating the space-confined effect for gold nanoparticles. AuNRbs with wide-range tunability of plasmon resonances from the visible to near infrared (NIR) region have been successfully synthesized, and how their geometric configurations affect their optical properties is thoroughly discussed. The close-packed AuNRbs have also demonstrated huge potential in Raman sensing due to their abundant “built-in” hotspots. This strategy offers a new route towards synthesizing high-quality AuNRbs with the capability of engineering the morphology to achieve target functions, which is highly desirable for a large number of applications. Full article
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Open AccessArticle
Formation of 3-Dimensional Gold, Copper and Palladium Microelectrode Arrays for Enhanced Electrochemical Sensing Applications
Nanomaterials 2019, 9(8), 1170; https://doi.org/10.3390/nano9081170 - 15 Aug 2019
Abstract
Microelectrodes offer higher current density and lower ohmic drop due to increased radial diffusion. They are beneficial for electroanalytical applications, particularly for the detection of analytes at trace concentrations. Microelectrodes can be fabricated as arrays to improve the current response, but are presently [...] Read more.
Microelectrodes offer higher current density and lower ohmic drop due to increased radial diffusion. They are beneficial for electroanalytical applications, particularly for the detection of analytes at trace concentrations. Microelectrodes can be fabricated as arrays to improve the current response, but are presently only commercially available with gold or platinum electrode surfaces, thus limiting the sensing of analytes that are more electroactive on other surfaces. In this work, gold (Au), copper (Cu), and palladium (Pd) are electrodeposited at two different potentials into the recessed holes of commercial microelectrode arrays to produce 3-dimensional (3D) spiky, dendritic or coral-like structures. The rough fractal structures that are produced afford enhanced electroactive surface area and increased radial diffusion due to the 3D nature, which drastically improves the sensitivity. 2,4,6-trinitrotoluene (TNT), carbon dioxide gas (CO2), and hydrogen gas (H2) were chosen as model analytes in room temperature ionic liquid solvents, to demonstrate improvements in the sensitivity of the modified microelectrode arrays, and, in some cases (e.g., for CO2 and H2), enhancements in the electrocatalytic ability. With the deposition of different materials, we have demonstrated enhanced sensitivity and electrocatalytic behaviour towards the chosen analytes. Full article
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