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Design and Application Based on Versatile Nano-Composites

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Nanochemistry".

Deadline for manuscript submissions: 30 June 2024 | Viewed by 9770

Special Issue Editor


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Guest Editor
College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
Interests: nanoparticles; nanosheets; composites; preparation; application

Special Issue Information

Dear Colleagues,

Nanocompounds, including nanocarbon (fullerenes, carbon nanotubes and graphene), magnetic nanoparticles, super-hard-modified coatings, lithium-ion batteries, nanoflame retardant and so on, have attracted increasing interest due to their distinct physical and chemical properties. These multifunctional nanomaterials have been widely utilized in many practical and research fields, including environmental management, chemical engineering, electrode materials, as well as biomedical applications.

This Special Issue is intended as a platform for articles about developing and researching these interactive nanomaterials (either research or review articles) with an emphasis on the functionalization, preparation, characterization, and applications of novel fabricated, composited, or hybrid nanomaterials. Our aim is to collect all of the most recent advances in the field, highlight the strengths and the weaknesses of each nanomaterial and provide some new thoughts for the researchers working in this multidisciplinary area.

Prof. Dr. Jingang Yu
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. Molecules 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 2700 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

  • nanoparticles
  • nanosheets
  • composites
  • preparation
  • application

Published Papers (4 papers)

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Research

15 pages, 5258 KiB  
Article
Preparation of Silica Aerogel/Resin Composites and Their Application in Dental Restorative Materials
by Jingru Cheng, Yuyi Deng, Yujin Tan, Jiawei Li, Yongsheng Fei, Congcong Wang, Jingjing Zhang, Chenxi Niu, Qian Fu and Lingbin Lu
Molecules 2022, 27(14), 4414; https://doi.org/10.3390/molecules27144414 - 9 Jul 2022
Cited by 7 | Viewed by 2039
Abstract
As the most advanced aerogel material, silica aerogel has had transformative industrial impacts. However, the use of silica aerogel is currently limited to the field of thermal insulation materials, so it is urgent to expand its application into other fields. In this work, [...] Read more.
As the most advanced aerogel material, silica aerogel has had transformative industrial impacts. However, the use of silica aerogel is currently limited to the field of thermal insulation materials, so it is urgent to expand its application into other fields. In this work, silica aerogel/resin composites were successfully prepared by combining silica aerogel with a resin matrix for dental restoration. The applications of this material in the field of dental restoration, as well as its performance, are discussed in depth. It was demonstrated that, when the ratio of the resin matrix Bis-GMA to TEGDMA was 1:1, and the content of silica aerogel with 50 μm particle size was 12.5%, the composite achieved excellent mechanical properties. The flexural strength of the silica aerogel/resin composite reached 62.9546 MPa, which was more than five times that of the pure resin. Due to the presence of the silica aerogel, the composite also demonstrated outstanding antibacterial capabilities, meeting the demand for antimicrobial properties in dental materials. This work successfully investigated the prospect of using commercially available silica aerogels in dental restorative materials; we provide an easy method for using silica aerogels as dental restorative materials, as well as a reference for their application in the field of biomedical materials. Full article
(This article belongs to the Special Issue Design and Application Based on Versatile Nano-Composites)
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16 pages, 5611 KiB  
Article
Novel Silver-Plated Nickel-Coated Graphite Powder with Excellent Heat and Humidity Resistance: Facile Preparation and Performance Investigation
by Xin-Kun Lv and Jin-Gang Yu
Molecules 2022, 27(13), 4007; https://doi.org/10.3390/molecules27134007 - 22 Jun 2022
Cited by 2 | Viewed by 2551
Abstract
Nickel-coated graphite (Ni/C) powder has many applications in diverse areas such as paint, print ink, adhesive, conductive rubber, and so on. To increase its stability in harsh environmental conditions, the electroless plating of silver film on Ni/C via ascorbic acid was studied. A [...] Read more.
Nickel-coated graphite (Ni/C) powder has many applications in diverse areas such as paint, print ink, adhesive, conductive rubber, and so on. To increase its stability in harsh environmental conditions, the electroless plating of silver film on Ni/C via ascorbic acid was studied. A silver layer with a thickness of 2.5 μm was successfully plated on Ni/C powder’s surface with an Ag loading of 44.35 wt.%. Silica gel blended with the Ag/Ni/C powder exhibited much higher conductivity under aging conditions of 85 °C and 85% RH for 1000 h than that with pristine Ni/C powder. Further tests showed that the conductivity of Ag/Ni/C powder remained almost unchanged even in an extremely humid and hot condition for 1000 h. Aging tests were carried out for Ag/Ni/C and Ni/C powders under long-term humid and hot conditions (85 °C, 85% RH), in which Ag/Ni/C samples showed much better electromagnetic shielding performance. Due to the excellent properties and reasonable price, the potential applications of Ag/Ni/C in conductive glue and electromagnetic shielding glue could be expected. Full article
(This article belongs to the Special Issue Design and Application Based on Versatile Nano-Composites)
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13 pages, 3249 KiB  
Article
Synergistic Catalysis of SnO2/Reduced Graphene Oxide for VO2+/VO2+ and V2+/V3+ Redox Reactions
by Yongguang Liu, Yingqiao Jiang, Yanrong Lv, Zhangxing He, Lei Dai and Ling Wang
Molecules 2021, 26(16), 5085; https://doi.org/10.3390/molecules26165085 - 22 Aug 2021
Cited by 6 | Viewed by 2110
Abstract
In spite of their low cost, high activity, and diversity, metal oxide catalysts have not been widely applied in vanadium redox reactions due to their poor conductivity and low surface area. Herein, SnO2/reduced graphene oxide (SnO2/rGO) composite was prepared [...] Read more.
In spite of their low cost, high activity, and diversity, metal oxide catalysts have not been widely applied in vanadium redox reactions due to their poor conductivity and low surface area. Herein, SnO2/reduced graphene oxide (SnO2/rGO) composite was prepared by a sol–gel method followed by high-temperature carbonization. SnO2/rGO shows better electrochemical catalysis for both redox reactions of VO2+/VO2+ and V2+/V3+ couples as compared to SnO2 and graphene oxide. This is attributed to the fact that reduced graphene oxide is employed as carbon support featuring excellent conductivity and a large surface area, which offers fast electron transfer and a large reaction place towards vanadium redox reaction. Moreover, SnO2 has excellent electrochemical activity and wettability, which also boost the electrochemical kinetics of redox reaction. In brief, the electrochemical properties for vanadium redox reactions are boosted in terms of diffusion, charge transfer, and electron transport processes systematically. Next, SnO2/rGO can increase the energy storage performance of cells, including higher discharge electrolyte utilization and lower electrochemical polarization. At 150 mA cm−2, the energy efficiency of a modified cell is 69.8%, which is increased by 5.7% compared with a pristine one. This work provides a promising method to develop composite catalysts of carbon materials and metal oxide for vanadium redox reactions. Full article
(This article belongs to the Special Issue Design and Application Based on Versatile Nano-Composites)
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12 pages, 4706 KiB  
Article
Hybrid Structures of Sisal Fiber Derived Interconnected Carbon Nanosheets/MoS2/Polyaniline as Advanced Electrode Materials in Lithium-Ion Batteries
by Wei Li, Yuanzhou Liu, Shuang Zheng, Guobin Hu, Kaiyou Zhang, Yuan Luo and Aimiao Qin
Molecules 2021, 26(12), 3710; https://doi.org/10.3390/molecules26123710 - 18 Jun 2021
Cited by 6 | Viewed by 1947
Abstract
In this work, we designed and successfully synthesized an interconnected carbon nanosheet/MoS2/polyaniline hybrid (ICN/MoS2/PANI) by combining the hydrothermal method and in situ chemical oxidative polymerization. The as-synthesized ICNs/MoS2/PANI hybrid showed a “caramel treat-like” architecture in which the [...] Read more.
In this work, we designed and successfully synthesized an interconnected carbon nanosheet/MoS2/polyaniline hybrid (ICN/MoS2/PANI) by combining the hydrothermal method and in situ chemical oxidative polymerization. The as-synthesized ICNs/MoS2/PANI hybrid showed a “caramel treat-like” architecture in which the sisal fiber derived ICNs were used as hosts to grow “follower-like” MoS2 nanostructures, and the PANI film was controllably grown on the surface of ICNs and MoS2. As a LIBs anode material, the ICN/MoS2/PANI electrode possesses excellent cycling performance, superior rate capability, and high reversible capacity. The reversible capacity retains 583 mA h/g after 400 cycles at a high current density of 2 A/g. The standout electrochemical performance of the ICN/MoS2/PANI electrode can be attributed to the synergistic effects of ICNs, MoS2 nanostructures, and PANI. The ICN framework can buffer the volume change of MoS2, facilitate electron transfer, and supply more lithium inset sites. The MoS2 nanostructures provide superior rate capability and reversible capacity, and the PANI coating can further buffer the volume change and facilitate electron transfer. Full article
(This article belongs to the Special Issue Design and Application Based on Versatile Nano-Composites)
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