Harvesting Electromagnetic Fields with Nanomaterials: Selected Papers from the International Forum on Micro-Nano Technology and Composites

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

Deadline for manuscript submissions: 20 May 2025 | Viewed by 1308

Special Issue Editors


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Guest Editor
School of Information Science Technology, Northwest University, Xi’an 710127, China
Interests: electromagnetic wave absorption; microwave absorption

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Guest Editor
School of Physics, Xidian University, Xi'an 710071, China
Interests: theoretical design; preparation and stealth application of electromagnetic wave absorbing materials

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Guest Editor
School of Science, Chang'an University, Xi'an 710064, China
Interests: stealth application of electromagnetic wave absorbing materials; magnetic functional materials and devices

Special Issue Information

Dear Colleagues,

We would like to invite all researchers in the field of multi-functional nanomaterials and applications, especially the participants of the 5th International Forum on Micro-Nano Technology and Composites, to submit their original research papers for this Special Issue on “Harvesting Electromagnetic Fields with Nanomaterials: Selected Papers from the International Forum on Micro-Nano Technology and Composites”, to be published in Nanomaterials.

This Special Issue includes selected papers from the 5th International Forum on Micro-Nano Technology and Composites, to be held on 25-27 October in Zhengzhou, China. Responding to the application from the Low-Dimensional Electromagnetic Functional Materials and Devices sub-forum, a Special Issue entitled "Harvesting Electromagnetic Fields with Nanomaterials: Selected Papers from the International Forum on Micro-Nano Technology and Composites" is planned. The topics of this Special Issue will contain the accepted papers presented during the forum, related to “nanotechnologies and nanomaterials”, and mainly include the following:

  1. First-principle calculation, design, development, and application of wave absorbing materials and electromagnetic shielding materials;
  2. Design, development, and application of metamaterial absorbers;
  3. First-principle calculation, photocatalysis, photoluminescence, and photoelectric properties of nanomaterials.

Prof. Dr. Junfeng Yan
Dr. Jiaolong Liu
Dr. Zhen Wang
Guest Editors

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Keywords

  • electromagnetic wave absorption
  • nanocomposites
  • wave absorbing materials
  • metamaterial
  • ultraviolet
  • first-principle

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Published Papers (2 papers)

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Research

13 pages, 10081 KiB  
Article
Preparation and Gas-Sensitive Properties of SnO2@Bi2O3 Core-Shell Heterojunction Structure
by Jin Liu, Yixin Gao, Yuanyuan Lv, Mengdi Yang, Haoru Guo, Neng Li, Danyang Bai and Anyi Wang
Nanomaterials 2025, 15(2), 129; https://doi.org/10.3390/nano15020129 - 16 Jan 2025
Viewed by 548
Abstract
The SnO2@Bi2O3 core-shell heterojunction structure was designed and synthesized via a hydrothermal method, and the structure and morphology of the synthesized samples were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS). Based [...] Read more.
The SnO2@Bi2O3 core-shell heterojunction structure was designed and synthesized via a hydrothermal method, and the structure and morphology of the synthesized samples were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS). Based on the conclusions from XRD and SEM, it can be observed that as the hydrothermal temperature increases, the content of Bi2O3 coated on the surface of SnO2 spheres gradually increases, and the diameter of Bi2O3 nanoparticles also increases. At a hydrothermal temperature of 160 °C, the SnO2 spheres are fully coated with Bi2O3 nanoparticles. This paper investigated the gas-sensitive performance of the SnO2@Bi2O3 sensor towards ethanol gas. Gas sensitivity tests at the optimal operating temperature of 300 °C showed that the composite prepared at 160 °C achieved a response value of 19.7 for 100 ppm ethanol. Additionally, the composite exhibited excellent response to 100 ppm ethanol, with a response time of only 4 s, as well as good repeatability. The excellent gas-sensitive performance of the SnO2@Bi2O3 core-shell heterojunction towards ethanol gas is attributed to its p-n heterojunction material properties. Its successful preparation contributes to the realization of high-performance heterostructure ethanol gas sensors. Full article
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17 pages, 4204 KiB  
Article
Preparation and Gas-Sensitive Properties of Square–Star-Shaped Leaf-Like BiVO4 Nanomaterials
by Jin Liu, Mengdi Yang, Yuanyuan Lv, Yixin Gao, Danyang Bai, Neng Li, Haoru Guo and Anyi Wang
Nanomaterials 2025, 15(2), 127; https://doi.org/10.3390/nano15020127 - 16 Jan 2025
Viewed by 488
Abstract
In this study, square–star-shaped leaf-like BiVO4 nanomaterials were successfully synthesized using a conventional hydrothermal method. The microstructure, elemental composition, and gas-sensing performance of the materials were thoroughly investigated. Morphological analysis revealed that BiVO4 prepared at different reaction temperatures exhibited square–star-shaped leaf-like [...] Read more.
In this study, square–star-shaped leaf-like BiVO4 nanomaterials were successfully synthesized using a conventional hydrothermal method. The microstructure, elemental composition, and gas-sensing performance of the materials were thoroughly investigated. Morphological analysis revealed that BiVO4 prepared at different reaction temperatures exhibited square–star-shaped leaf-like structures, with the most regular and dense structures formed at 150 °C, exhibiting a large specific surface area of 2.84 m2/g. The response performance of the BiVO4 gas sensors to different target gases was evaluated, and the results showed that the prepared BiVO4 gas sensor exhibited a strong response to NH3. At the optimal operating temperature of 300 °C, its sensitivity to 5 ppm NH3 reached 13.3, with a response time of 28 s and a recovery time of 16 s. Moreover, the gas sensor exhibited excellent repeatability and anti-interference performance. These findings indicate that square–star-shaped leaf-like BiVO4 holds great potential in environmental monitoring and industrial safety detection, offering new insights for the development of high-performance gas sensors. Full article
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