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Hybrid Nanocomposites for Wearable, Energy and Environmental Applications
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Hybrid Nanocomposites for Wearable, Energy and Environmental Applications

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Advanced Nanomaterials and Nanotechnology".

Deadline for manuscript submissions: closed (20 January 2023) | Viewed by 6314

Special Issue Editor

Dr. Sunghoon Park

E-Mail Website
Guest Editor
Department of Mechanical Engineering, Soongsil University, 369Sangdo-ro, Dongjak-Gu, Seoul 06978, Republic of Korea
Interests: nanocomposites; wearable devices; tactile sensors; electric heating; antifouling/antivirus surfaces; chemical sensors; electromagnetic interference shielding; super-hydrophobic surfaces
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Hybrid nanocomposites for wearable, energy, and environmental applications (such as wearable devices, tactile sensors, stretchable interconnects, rapid heating, antifouling/antivirus surfaces, chemical sensors, electromagnetic interference shielding, fuel cells, and lithium-ion batteries) have been extensively investigated in the academic and industrial fields. Formed by two or more components, hybrid nanocomposites could combine the intrinsic characteristics of its individual components with enormous synergistic effects. In addition, the advent of carbon-based nanomaterials (carbon nanotubes, graphene, and carbon black) and inorganic nanomaterials (Ag wire/particles, Cu mesh, and transition metal dichalcogenide) has accelerated research interest in wearable, energy, and environmental applications.

This Special Issue is focused on the emerging concept and improvement of wearable, energy, and environmental applications, as well as on the characterization of the micro/nanostructures of novel wearable, energy, and environmental base materials. Topics will include, but are not limited to:

  • Design and development of hybrid nanocomposites having controllable electrical properties under physical deformation (wearable devices, tactile sensors, and stretchable interconnects);
  • Design and development of electric heating composites with rapid heating that are flexible and have cost-saving properties;
  • New concepts in the design of eco-friendly antifouling/antivirus materials;
  • Design and development of electromagnetic interference shielding materials with flexible and reinforced properties;
  • Novel concepts and the development of chemical sensors;
  • Novel concepts and the development of fuel cells and lithium-ion batteries;
  • New methods and synthesis of hybrid nanocomposites.

It is our pleasure to invite you to submit a manuscript to this Special Issue. Full papers, short communications, and reviews will be greatly appreciated.

Prof. Sunghoon Park
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. Materials 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 2600 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

  • Nanocomposite
  • Wearable/stretchable devices
  • Tactile Sensor
  • Flexible eletrode
  • Electric heating
  • Anti-fouling/anti-virus surface
  • Super-hydrophobic
  • Chemical sensor
  • Electromagnetic interference shielding
  • Fuel cell/Lithium-ion battery

Published Papers (3 papers)

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Research

16 pages, 3613 KiB  
Article
Biochar Nanocomposite as an Inexpensive and Highly Efficient Carbonaceous Adsorbent for Hexavalent Chromium Removal
by Soroosh Mortazavian, Simona E. Hunyadi Murph and Jaeyun Moon
Materials 2022, 15(17), 6055; https://doi.org/10.3390/ma15176055 - 1 Sep 2022
Cited by 8 | Viewed by 2021
Abstract
Biochar is commonly used for soil amendment, due to its excellent water-holding capacity. The Cr(VI) contamination of water is a current environmental issue in industrial regions. Here, we evaluated the effects of two-step modifications on boosting biochar’s performance in terms of the removal [...] Read more.
Biochar is commonly used for soil amendment, due to its excellent water-holding capacity. The Cr(VI) contamination of water is a current environmental issue in industrial regions. Here, we evaluated the effects of two-step modifications on boosting biochar’s performance in terms of the removal of aqueous hexavalent chromium (Cr(VI)), along with investigating the alterations to its surface properties. The first modification step was heat treatment under air at 300 °C, producing hydrophilic biochar (HBC). The resulting HBC was then impregnated with zero-valent iron nanoparticles (nZVI), creating an HBC/nZVI composite, adding a chemical reduction capability to the physical sorption mechanism. Unmodified biochar (BC), HBC, and HBC/nZVI were characterized for their physicochemical properties, including surface morphology and elemental composition, by SEM/EDS, while functional groups were ascertained by FTIR and surface charge by zeta potential. Cr(VI) removal kinetic studies revealed the four-time greater sorption capacity of HBC than BC. Although unmodified BC showed faster initial Cr(VI) uptake, it rapidly worsened and started desorption. After nZVI impregnation, the Cr(VI) removal rate of HBC increased by a factor of 10. FTIR analysis of biochars after Cr(VI) adsorption showed the presence of Cr(III) oxide only on the used HBC/nZVI and demonstrated that the carbonyl and carboxyl groups were the main groups involved in Cr(VI) sorption. Modified biochars could be considered an economical substitute for conventional methods. Full article
(This article belongs to the Special Issue Hybrid Nanocomposites for Wearable, Energy and Environmental Applications)
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9 pages, 1585 KiB  
Article
Thermoelectric Properties of Cu2Te Nanoparticle Incorporated N-Type Bi2Te2.7Se0.3
by Yong-Jae Jung, Hyun-Sik Kim, Jong Ho Won, Minkyung Kim, Minji Kang, Eun Young Jang, Nguyen Vu Binh, Sang-il Kim, Kyoung-Seok Moon, Jong Wook Roh, Woo Hyun Nam, Sang-Mo Koo, Jong-Min Oh, Jung Young Cho and Weon Ho Shin
Materials 2022, 15(6), 2284; https://doi.org/10.3390/ma15062284 - 19 Mar 2022
Cited by 7 | Viewed by 2936
Abstract
To develop highly efficient thermoelectric materials, the generation of homogeneous heterostructures in a matrix is considered to mitigate the interdependency of the thermoelectric compartments. In this study, Cu2Te nanoparticles were introduced onto Bi2Te2.7Se0.3 n-type materials and [...] Read more.
To develop highly efficient thermoelectric materials, the generation of homogeneous heterostructures in a matrix is considered to mitigate the interdependency of the thermoelectric compartments. In this study, Cu2Te nanoparticles were introduced onto Bi2Te2.7Se0.3 n-type materials and their thermoelectric properties were investigated in terms of the amount of Cu2Te nanoparticles. A homogeneous dispersion of Cu2Te nanoparticles was obtained up to 0.4 wt.% Cu2Te, whereas the Cu2Te nanoparticles tended to agglomerate with each other at greater than 0.6 wt.% Cu2Te. The highest power factor was obtained under the optimal dispersion conditions (0.4 wt.% Cu2Te incorporation), which was considered to originate from the potential barrier on the interface between Cu2Te and Bi2Te2.7Se0.3. The Cu2Te incorporation also reduced the lattice thermal conductivity, and the dimensionless figure of merit ZT was increased to 0.75 at 374 K for 0.4 wt.% Cu2Te incorporation compared with that of 0.65 at 425 K for pristine Bi2Te2.7Se0.3. This approach could also be an effective means of controlling the temperature dependence of ZT, which could be modulated against target applications. Full article
(This article belongs to the Special Issue Hybrid Nanocomposites for Wearable, Energy and Environmental Applications)
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11 pages, 3909 KiB  
Article
Comparison of Pressure Sensing Properties of Carbon Nanotubes and Carbon Black Polymer Composites
by Jongchan Yoo, Dong-Young Kim, Hyunwoo Kim, Oh-Nyoung Hur and Sung-Hoon Park
Materials 2022, 15(3), 1213; https://doi.org/10.3390/ma15031213 - 6 Feb 2022
Cited by 13 | Viewed by 2807
Abstract
Polymer composites containing conductive fillers that utilize the piezoresistive effect can be employed in flexible pressure sensors. Depending on the filler used, different characteristics of a pressure sensor such as repeatability, sensitivity, and hysteresis can be determined. To confirm the variation of the [...] Read more.
Polymer composites containing conductive fillers that utilize the piezoresistive effect can be employed in flexible pressure sensors. Depending on the filler used, different characteristics of a pressure sensor such as repeatability, sensitivity, and hysteresis can be determined. To confirm the variation of the pressure sensing tendency in accordance with the dimensions of the filler, carbon black (CB) and carbon nanotubes (CNTs) were used as representative 0-dimension and 1-dimension conductive fillers, respectively. The piezoresistive effect was exploited to analyze the process of resistance change according to pressure using CB/PDMS (polydimethylsiloxane) and CNT/PDMS composites. The electrical characteristics observed for each filler were confirmed to be in accordance with its content. The pressure sensitivity of each composite was optimized, and the pressure-sensing mechanism that explains the difference in sensitivity is presented. Through repeated compression experiments, the hysteresis and repeatability of the pressure-sensing properties were examined. Full article
(This article belongs to the Special Issue Hybrid Nanocomposites for Wearable, Energy and Environmental Applications)
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