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Minerals
Special Issues
Green Synthesis and Applications of Multimetallic Nanoparticles and Nanominerals
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Green Synthesis and Applications of Multimetallic Nanoparticles and Nanominerals

A special issue of Minerals (ISSN 2075-163X). This special issue belongs to the section "Clays and Engineered Mineral Materials".

Deadline for manuscript submissions: closed (29 April 2023) | Viewed by 5737

Special Issue Editor

Dr. Clive H. Yen

E-Mail Website
Guest Editor
Department of Cosmetic Science, Providence University, Taichung City 43301, Taiwan
Interests: supercritical fluids; metallic nanoparticles; catalysis; green chemistry; cosmetic science

Special Issue Information

Dear Colleagues,

Metallic nanoparticles and nanominerals have attracted great interest in recent years due to their broad applications in many fields, such as chemistry, electronics, energy, environment, medicine, etc. A great deal of the current research is focused on developing greener engineering and processing methods for synthesizing metallic nanoparticles and obtaining nanominerals, since protecting the environment is one of our top priorities. In addition, multimetallic nanoparticles and nanominerals have various combinations of different metals and minerals forming nanoclusters or nanoalloys. Some of them have unique properties and may possess synergistic effects. Therefore, it is of our interest to discover the mechanisms behind this synergism and to explore new combinations of multimetallic nanoparticles and nanominerals for future applications. This Special Issue, titled “Green Synthesis and Applications of Multimetallic Nanoparticles and Nanominerals”, will cover a wide range of aspects in the synthesis, characterization, engineering, processing, and application of multimetallic nanoparticles and nanominerals related to green technology. We invite authors to submit original research articles or reviews on one of the following topics:

  • Green synthesis: plant-related methods, environmentally benign chemical methods, energy conserving processes, etc.;
  • Green applications: for human health and safety, environmental protection, energy efficiency, catalysis, and many more.

Dr. Clive H. Yen
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. Minerals is an international peer-reviewed open access monthly 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 2400 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

  • multimetallic
  • nanoparticles
  • nanominerals
  • green technology
  • application

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (2 papers)

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19 pages, 9173 KiB  
Article
Preparation of Bimetallic Au-Pd/MWCNTs Electrode for Detection of Dopamine
by Zhen Zhu, Hsiang-Ning Luk, Yu-Shih Liu, Ren-Jang Wu, Ming-Hung Chung and Xu-Jia Chang
Minerals 2022, 12(9), 1145; https://doi.org/10.3390/min12091145 - 10 Sep 2022
Cited by 7 | Viewed by 2102
Abstract
In this study, functionalized bimetallic Au-Pd on multi-walled carbon nanotubes (AuPd/MWCNT) are prepared and their application as electrochemical sensor materials for dopamine detection is explored. Furthermore, the as-prepared composite materials are identified using X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope [...] Read more.
In this study, functionalized bimetallic Au-Pd on multi-walled carbon nanotubes (AuPd/MWCNT) are prepared and their application as electrochemical sensor materials for dopamine detection is explored. Furthermore, the as-prepared composite materials are identified using X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), and X-ray photoelectron spectrometer (XPS). In addition, the experimental results show that AuPd/MWCNT displayed excellent sensing properties to dopamine. Especially, 1% Pd-5% Au/MWCNT showed a wide detection range (0.98–200 μM) and a low detection limit of 0.058 μM for dopamine. The sensor also displayed properties such as repeatability, reproducibility, and stability, which can be ascribed to the large specific surface area and the synergistic effect of the bimetallic nanoparticles. Therefore, the prepared functionalized multi-walled carbon nanotubes have good application prospects in the field of dopamine detection. Full article
(This article belongs to the Special Issue Green Synthesis and Applications of Multimetallic Nanoparticles and Nanominerals)
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12 pages, 1443 KiB  
Brief Report
Comparative Toxicity Assessment of Eco-Friendly Synthesized Superparamagnetic Iron Oxide Nanoparticles (SPIONs) in Plants and Aquatic Model Organisms
by Nicolás Hoffmann, Gonzalo Tortella, Edward Hermosilla, Paola Fincheira, M. Cristina Diez, Isabella M. Lourenço, Amedea B. Seabra and Olga Rubilar
Minerals 2022, 12(4), 451; https://doi.org/10.3390/min12040451 - 6 Apr 2022
Cited by 10 | Viewed by 2741
Abstract
This study aimed to evaluate the toxicity of superparamagnetic iron oxide nanoparticles (SPIONs) synthesized by biogenic (BS) and chemical (CH) routes. The nanoparticles were characterized by X-ray diffraction (XRD), X-ray spectroscopy (XPS), atomic force microscopy (AFM), vibrating-sample magnetometry (VSM-SQUID), Fourier-transform infrared spectroscopy (FT-IR), [...] Read more.
This study aimed to evaluate the toxicity of superparamagnetic iron oxide nanoparticles (SPIONs) synthesized by biogenic (BS) and chemical (CH) routes. The nanoparticles were characterized by X-ray diffraction (XRD), X-ray spectroscopy (XPS), atomic force microscopy (AFM), vibrating-sample magnetometry (VSM-SQUID), Fourier-transform infrared spectroscopy (FT-IR), and scanning electron microscopy (SEM). The toxicity of SPIONs was evaluated using Artemia salina as model aquatic organisms and Raphanus sativus and Lactuca sativa as model plants to evaluate their phytotoxicity. The results obtained from XRD, XPS, and AFM confirmed the formation of spherical nanoparticles of 41.9 ± 1.00 nm (BS route) and 19.8 ± 0.47 nm (CH route). VSM-SQUID demonstrated the superparamagnetic behavior of both nanoparticles, and FT-IR provided evidence of the differences in the surface of SPIONs, suggesting the presence of phenolic compounds on the surface of BS-SPIONs. For the assays with Artemia salina, the results demonstrated (i) nonsignificant differences of BS-SPIONs in mortality rates, and (ii) significant toxicity (p < 0.05) was observed for CH-SPIONs at 300 and 400 mg L−1. The Raphanus sativa plant assay tests showed (i) BS-SPIONs and CH-SPIONs improved the root elongation of seedlings. However, BS-SPIONs demonstrated significant activity on root seedling elongation (p < 0.05) in the range of 300 mg L−1 to 600 mg L−1. To the best of our knowledge, this is the first report to compare the toxicity of chemically and biogenically synthesized SPIONs. In conclusion, although BS-SPIONs and CH-SPIONs present similar structures, their characteristics of magnetic saturation and surface structure are nonidentical, providing differences in their biological activity. Full article
(This article belongs to the Special Issue Green Synthesis and Applications of Multimetallic Nanoparticles and Nanominerals)
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