Mesoporous Silica Based Nanocomposites

A special issue of Nanomaterials (ISSN 2079-4991). This special issue belongs to the section "Inorganic Materials and Metal-Organic Frameworks".

Deadline for manuscript submissions: closed (30 June 2021) | Viewed by 2238

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Faculty of Chemical Engineering and Biotechnologies, National University of Science and Technology POLITEHNICA Bucharest, 1-7 Gheorghe Polizu Street, 011061 Bucharest, Romania
Interests: inorganic and hybrid nanomaterials; mesoporous materials; drug delivery systems; encapsulation of phase change materials; composite nanostructures; nanoconfinement
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Special Issue Information

Dear Colleagues,

It is my pleasure to invite you to publish some of your recent works in this Special Issue dedicated to mesoporous silica composites. I see this not only as a collection of papers but rather as an opportunity to share our ideas and results that could inspire us for future projects and even bring us closer in a time of social distancing. Topics include any subject related to mesoporous silica nanocomposites, from synthesis, properties, to applications. Mesoporous silica offers two main unique properties that are exploited in most applications: highly specific surface area and ordered porous structure. Therefore, we encourage works that focus on how these properties have been tailored and integrated with other required qualities to obtain a synergism in the development of a new or a better composite material dedicated to a specific purpose. It is well known that biomedical applications have had a large momentum in recent years, and many manuscripts will be expected from this area, but mesoporous silica composites have also found their way to other important fields such as photonics, electronics, catalysis, and energy. As such, you are welcome to discover how varied and interesting the subjects are and how they are linked by this special material of mesoporous silica.

Prof. Dr. Cristian Matei
Guest Editor

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Keywords

  • Nanostructured composites
  • Encapsulation
  • Nanoconfinement
  • Adsorption
  • Entrapping guest molecules
  • Drug delivery
  • Catalysts immobilization
  • Magnetic materials
  • Electrodes
  • Supercapacitors
  • Quantum confined nanowire
  • Polymer–mesoporous silica composites
  • Mesoporous silica–carbon composites
  • Pollutant removal

Published Papers (1 paper)

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Research

10 pages, 2225 KiB  
Article
Composite Nanostructure of Manganese Cluster and CHA-Type Silicoaluminaphosphates: Enhanced Catalytic Performance in Dimethylether to Light Olefins Conversion
by Guichen Ping, Kai Zheng, Qihua Fang and Gao Li
Nanomaterials 2021, 11(1), 24; https://doi.org/10.3390/nano11010024 - 24 Dec 2020
Cited by 5 | Viewed by 1863
Abstract
Light olefins, especially ethylene and propylene, are important chemicals in petrochemical industries with an increasing demand and play an essential role in the global consumption. In this regard, there have been extensive studies to design efficient catalysts for the light olefins productions. In [...] Read more.
Light olefins, especially ethylene and propylene, are important chemicals in petrochemical industries with an increasing demand and play an essential role in the global consumption. In this regard, there have been extensive studies to design efficient catalysts for the light olefins productions. In this study, we report a new protocol to induce Mn nanoclusters (MnNC) into the mesopore of a CHA-type silicoaluminaphosphates via a one-pot synthesis of MnNC@SAPO-34 catalysts. The catalysts are characterized by a series of technology, such as TEM, XRD, NH3-TPD, 27Al MAS NMR, ICP-MS, XPS, and as well as N2-physical adsorption methods. The Mn nanoclusters of Mn2O3 and MnO2 species are well dispersed in the framework of the SAPO-34 silicoaluminaphosphates, modifying the porosity and acidic property of the SAPO-34: Giving rise to more mesoporous and improving the acid density. The MnNC@SAPO-34 catalysts exhibit decent 100% conversion and 92.2% olefins selectivity in the dimethyl ether to olefins (DTO) reactions, which is considerably higher than that for SAPO-34 silicoaluminaphosphates (79.6% olefins selectivity). The higher olefins selectivity over the MnNC@SAPO-34 is deemed to associate with the strong acid density and intensity of the silicoaluminaphosphates. Further, the Mn particles largely improve silicoaluminaphosphates’s durability. Full article
(This article belongs to the Special Issue Mesoporous Silica Based Nanocomposites)
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