Molecular Design of Ceramic Nanocomposites for Prospective Energy-Related Applications

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Nanocomposite Materials".

Deadline for manuscript submissions: closed (31 May 2023) | Viewed by 2878

Special Issue Editor


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Guest Editor
Materials and Earth Science Department, TU Darmstadt, D-64287 Darmstadt, Germany
Interests: ceramics and ceramic nanocomposites; multifunctional nanomaterials; low-dimensional nanocarbon-based materials; polymer-derived ceramics, sol-gel science; polymer and organometallic chemistry
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Special Issue Information

Dear Colleagues,

There is a rapidly growing interest within the scientific community in the chemical design of high-purity ceramic nanocomposites starting from polymers and low-weight inorganic or organoelement precursors. This bottom-up route to ceramic materials has been shown within the last four decades to be an excellent tool to design ceramic nanocomposites with controlled and tunable structural features and properties. Properties such as stability in oxidative and corrosive environments, high strength, and creep and thermal shock resistance designate them as strong candidates for application under extreme conditions. Thus, chemically designed ceramic nanocomposites have found purposes in many technologically important areas, such as for energy (electrical energy storage, conversion, transfer, thermal management, and mobile applications) and environmental systems, biomedical components, micro- or nano-electromechanical systems (MEMS/NEMS), transport, defense, and aerospace and space technologies.

The scope of this Special Issue includes, without being limited to, recent developments on the following topics:

  • Synthesis methods for oxide and non-oxide ceramic nanocomposites (solid-state synthesis, sol-gel techniques, polymer-derived ceramic process, CVD, etc.);
  • Processing methods;
  • Micro-/nanostructure;
  • Structural ceramic nanocomposites;
  • Multifunctional ceramic nanocomposites;
  • Properties: electronic; optical; magnetic; catalytic, mechanical; charge carrier transport; thermal transport; etc.;
  • Energy-related applications: energy conversion, storage and transfer, thermal management (e.g., high-temperature, environmentally stable substrates for power devices), mobile applications, etc.

You are greatly welcome to submit a manuscript for this Special Issue. Full papers, communications, and reviews that cover all the aspects mentioned above are all welcome.

Dr. Gabriela Mera
Guest Editor

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Keywords

  • chemical design of ceramic nanocomposites
  • nanostructured materials
  • processing techniques
  • micro- and nanostructure
  • functional properties
  • structural properties
  • energy-related applications

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Published Papers (1 paper)

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Research

15 pages, 3592 KiB  
Article
Mechanistic Investigation of the Formation of Nickel Nanocrystallites Embedded in Amorphous Silicon Nitride Nanocomposites
by Norifumi Asakuma, Shotaro Tada, Erika Kawaguchi, Motoharu Terashima, Sawao Honda, Rafael Kenji Nishihora, Pierre Carles, Samuel Bernard and Yuji Iwamoto
Nanomaterials 2022, 12(10), 1644; https://doi.org/10.3390/nano12101644 - 11 May 2022
Cited by 9 | Viewed by 2394
Abstract
Herein, we report the mechanistic investigation of the formation of nickel (Ni) nanocrystallites during the formation of amorphous silicon nitride at a temperature as low as 400 °C, using perhydropolysilazane (PHPS) as a preformed precursor and further coordinated by nickel chloride (NiCl2 [...] Read more.
Herein, we report the mechanistic investigation of the formation of nickel (Ni) nanocrystallites during the formation of amorphous silicon nitride at a temperature as low as 400 °C, using perhydropolysilazane (PHPS) as a preformed precursor and further coordinated by nickel chloride (NiCl2); thus, forming the non-noble transition metal (TM) as a potential catalyst and the support in an one-step process. It was demonstrated that NiCl2 catalyzed dehydrocoupling reactions between Si-H and N-H bonds in PHPS to afford ternary silylamino groups, which resulted in the formation of a nanocomposite precursor via complex formation: Ni(II) cation of NiCl2 coordinated the ternary silylamino ligands formed in situ. By monitoring intrinsic chemical reactions during the precursor pyrolysis under inert gas atmosphere, it was revealed that the Ni-N bond formed by a nucleophilic attack of the N atom on the Ni(II) cation center, followed by Ni nucleation below 300 °C, which was promoted by the decomposition of Ni nitride species. The latter was facilitated under the hydrogen-containing atmosphere generated by the NiCl2-catalyzed dehydrocoupling reaction. The increase of the temperature to 400 °C led to the formation of a covalently-bonded amorphous Si3N4 matrix surrounding Ni nanocrystallites. Full article
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