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Nanomaterials
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Preparation and Application of Noble Metal and Semi-Conductive Nanoparticles
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Preparation and Application of Noble Metal and Semi-Conductive Nanoparticles

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

Deadline for manuscript submissions: closed (5 January 2020) | Viewed by 16951

Special Issue Editor

Dr. Karolína Šišková

E-Mail Website
Guest Editor
Department of Experimental Physics, 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 Issues, Collections and Topics in MDPI journals

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 submissions that pass pre-check are 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.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Nanomaterials is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2900 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 (4 papers)

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Research

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20 pages, 2681 KiB  
Article
The Effect of Fatty Acids and BSA Purity on Synthesis and Properties of Fluorescent Gold Nanoclusters
by Pavlína Andrýsková, Karolína Machalová Šišková, Šárka Michetschlägerová, Klára Jiráková, Martin Kubala and Daniel Jirák
Nanomaterials 2020, 10(2), 343; https://doi.org/10.3390/nano10020343 - 17 Feb 2020
Cited by 4 | Viewed by 2964
Abstract
Fluorescent gold nanoclusters (AuNCs) are envisaged as a novel type of fluorophores. This work reports on the first comparative study investigating the effect of presence/absence/abundance of fatty acids (namely palmitic acid, PA) or other substances (like glycoproteins and globulins) in the protein (bovine [...] Read more.
Fluorescent gold nanoclusters (AuNCs) are envisaged as a novel type of fluorophores. This work reports on the first comparative study investigating the effect of presence/absence/abundance of fatty acids (namely palmitic acid, PA) or other substances (like glycoproteins and globulins) in the protein (bovine serum albumin, BSA) on synthesis and properties of the final AuNCs. The most popular template (BSA) and microwave (MW)-assisted synthesis of AuNCs have been intentionally chosen. Our results clearly demonstrate that the fluorescent characteristics (i.e., fluorescence lifetime and quantum yield) are affected by the fatty acids and/or other substances. Importantly, the as-prepared AuNCs are biocompatible, as determined by Alamar Blue assay performed on Hep G2 cell line. Full article
(This article belongs to the Special Issue Preparation and Application of Noble Metal and Semi-Conductive Nanoparticles)
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12 pages, 2760 KiB  
Article
Morphology-Tailored Gold Nanoraspberries Based on Seed-Mediated Space-Confined Self-Assembly
by Yan Yu, Yujun Xie, Pan Zeng, Dai Zhang, Rongqing Liang, Wenxing Wang, Qiongrong Ou and Shuyu Zhang
Nanomaterials 2019, 9(9), 1202; https://doi.org/10.3390/nano9091202 - 27 Aug 2019
Cited by 6 | Viewed by 3949
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
(This article belongs to the Special Issue Preparation and Application of Noble Metal and Semi-Conductive Nanoparticles)
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16 pages, 3968 KiB  
Article
Formation of 3-Dimensional Gold, Copper and Palladium Microelectrode Arrays for Enhanced Electrochemical Sensing Applications
by Catherine E. Hay, Junqiao Lee and Debbie S. Silvester
Nanomaterials 2019, 9(8), 1170; https://doi.org/10.3390/nano9081170 - 15 Aug 2019
Cited by 8 | Viewed by 4947
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
(This article belongs to the Special Issue Preparation and Application of Noble Metal and Semi-Conductive Nanoparticles)
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Review

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25 pages, 6271 KiB  
Review
Noble Metal Nanostructured Materials for Chemical and Biosensing Systems
by Mingfei Pan, Jingying Yang, Kaixin Liu, Zongjia Yin, Tianyu Ma, Shengmiao Liu, Longhua Xu and Shuo Wang
Nanomaterials 2020, 10(2), 209; https://doi.org/10.3390/nano10020209 - 25 Jan 2020
Cited by 51 | Viewed by 4542
Abstract
Nanomaterials with unique physical and chemical properties have attracted extensive attention of scientific research and will play an increasingly important role in the future development of science and technology. With the gradual deepening of research, noble metal nanomaterials have been applied in the [...] Read more.
Nanomaterials with unique physical and chemical properties have attracted extensive attention of scientific research and will play an increasingly important role in the future development of science and technology. With the gradual deepening of research, noble metal nanomaterials have been applied in the fields of new energy materials, photoelectric information storage, and nano-enhanced catalysis due to their unique optical, electrical and catalytic properties. Nanostructured materials formed by noble metal elements (Au, Ag, etc.) exhibit remarkable photoelectric properties, good stability and low biotoxicity, which received extensive attention in chemical and biological sensing field and achieved significant research progress. In this paper, the research on the synthesis, modification and sensing application of the existing noble metal nanomaterials is reviewed in detail, which provides a theoretical guidance for further research on the functional properties of such nanostructured materials and their applications of other nanofields. Full article
(This article belongs to the Special Issue Preparation and Application of Noble Metal and Semi-Conductive Nanoparticles)
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