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Special Issue "Controllable Preparation and Application of Metal Compounds"

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Institute of Advanced Materials, Beijing Normal University, Beijing, China
Interests: catalysts; phase change materials; energy storage; MOFs; perovskites
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Dr. Hongyi Gao

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Guest Editor

School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
Interests: thermal energy storage; phase change materials; MOFs; catalyst synthesis; aerogel
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Metal compounds, such as metal oxides, hydroxides, sulfides, phosphides, nitrides, and carbides, exhibited outstanding potential applications in catalysis, batteries, detectors, ceramics, biomedicine, water treatment and other fields. Among which, the composition control, doping regulation and surface/interface engineering of metal compounds have been considered as effective methods to modulate their microstructures, providing a powerful means for creating a large variety of high-performance metal compounds for different chemical processes. Of particular interest, there has been growing research concerning the controllable preparation of metal compounds to optimize their performance.

This special issue on “Controllable Preparation and Application of Metal compounds” aims to gather the important developments related to this rapidly growing fields of metal compounds, such as the structural design and precise preparation methods of metal compounds, defect and interface engineering, cost-effective material synthesis techniques, as well as the applications of metal compounds in catalysis, batteries, detectors, ceramics and other fields.

Topics include but are not limited to:

Structural design and controlled preparation;
Theoretical and experimental investigation on the relationship between material structures and their properties;
Application of metal compounds in catalysis, batteries, detectors, ceramics, biomedicine, water treatment and other fields;
Clean energy technologies;
Energy conversion and storage technologies;
Development and challenges relating to metal compounds and their applications.

Dr. Xiaowei Zhang
Dr. Hongyi Gao
Guest Editors

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. Processes 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 2000 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

metal compounds
catalysts
batteries
detectors
ceramics
detectors
clean energy
energy conversion and storage
water treatment

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Research

Open AccessArticle

High-Thermal-Conductivity AlN Ceramics Prepared from Octyltrichlorosilane-Modified AlN Powder

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Processes 2023, 11(4), 1186; https://doi.org/10.3390/pr11041186 - 12 Apr 2023

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Abstract

Aluminum nitride has been widely used as heat-management material for large-scale integrated circuits and semiconductor packages because of its excellent insulation, high thermal conductivity, low dielectric constant and loss, similar expansion coefficient to that of silicon, and non-toxicity. However, the increase of oxygen content caused by the hydration of aluminum nitride powder during storage often decreases the thermal conductivity of aluminum nitride ceramics. In this work, we propose an approach for preparing high-thermal-conductivity AlN ceramics via octyltrichlorosilane-modified AlN powder. The octyltrichlorosilane reacted with the hydroxyl group on the surface of the AlN powder forming a siloxane protective layer. The protective layer not only enhanced the water contact angle of AlN powder from 34.8° to 151°, but also ensured the phase of AlN powder did not change in the distilled water at 25 °C for 72 h. High-thermal-conductivity AlN ceramics up to 186 W·m⁻¹·K⁻¹ were successfully prepared based on the modified AlN powder which had been stored for one year. This work provides a simple, effective, and practical method for the stable preparation of high-thermal-conductivity AlN ceramics. Full article

(This article belongs to the Special Issue Controllable Preparation and Application of Metal Compounds)

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Open AccessArticle

Synthesis of Aluminum Nitride Using Sodium Aluminate as Aluminum Source

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Processes 2023, 11(4), 1034; https://doi.org/10.3390/pr11041034 - 29 Mar 2023

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Abstract

At present, the carbothermal reduction and nitridation process is an important method for the large-scale preparation of aluminum nitride powder in industry, but the tremendous energy consumption caused by long-term high temperatures seriously restricts its practical application. To solve this problem, the (NaAlO₂+C) mixture with a mole ratio of NaAlO₂:C = 1:3 was prepared based on sodium aluminate and carbon black which has been ball milled with anhydrous ethanol as a grinding liquid. The crystal structure evolution and nitridation reaction behavior of sodium aluminate at 800–1600 °C under a nitrogen atmosphere in the presence of carbon were systematically studied employing XRD, SEM, and ICP-MS. The results showed that: high energy θ-Al₂O₃, η-Al₂O₃ can be excited by heating sodium aluminate to 1400 °C under a nitrogen atmosphere in the presence of carbon. The transformation process between sodium aluminate and aluminum nitride is carried out via the direct nitridation of θ-Al₂O₃, η-Al₂O₃. Benefiting from the direct nitridation of η-Al₂O₃ and θ-Al₂O₃, high-purity aluminum nitride powder with a particle size of 0.50 ± 0.18 μm was synthesized at 1400 °C. This work provides a new path for reduced energy consumption in the aluminum nitride industry. Full article

(This article belongs to the Special Issue Controllable Preparation and Application of Metal Compounds)

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