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Molecules
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Hybrid Organic-Inorganic Systems for Catalytic Applications
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Hybrid Organic-Inorganic Systems for Catalytic Applications

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

Deadline for manuscript submissions: closed (15 February 2023) | Viewed by 5418

Special Issue Editors

Prof. Dr. Michelangelo Gruttadauria

E-Mail Website1 Website2
Guest Editor
Department of Biological, Chemical and Pharmaceutical Sciences and Technologies, University of Palermo, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy
Interests: carbon nanoform modification; hybrid compounds; ionic liquids; organo- and metal-based catalysis; heterogeneous catalysis
Prof. Dr. Francesco Giacalone

E-Mail Website1 Website2
Guest Editor
Department of Biological, Chemical and Pharmaceutical Sciences and Technologies, University of Palermo, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy
Interests: carbon nanoforms; heterogeneous catalysis; hybrid materials
Special Issues, Collections and Topics in MDPI journals
Dr. Vincenzo Campisciano

E-Mail Website
Guest Editor
Department of Biological, Chemical and Pharmaceutical Sciences and Technologies, University of Palermo, Viale delle Scienze, Ed. 17, 90128 Palermo, Italy
Interests: carbon nanoform modification; hybrid compounds; ionic liquids; organo- and metal-based catalysis; heterogeneous catalysis

Special Issue Information

Dear Colleagues,

The rational design of both homogeneous and heterogeneous catalysts is a fundamental prerequisite to reach high catalytic performance in terms of activity, selectivity, and stability. The combination of organic and inorganic moieties for the production of hybrid structures, which possess the advantageous features of both components, represents a powerful tool to achieve these goals. The interaction at molecular scale of the organic and inorganic sections often gives rise to new synergistic properties, such as better processability and/or higher activity, which can be tuned by changing the nature or the relative amounts of the single units resulting in high-appeal molecules or materials with improved catalytic performance. Significant research efforts have been devoted to developing new hybrid organic–inorganic systems with promising applications in different branches of catalysis, and this Special Issue is aimed at highlighting new advances in this very fruitful field.

Prof. Dr. Michelangelo Gruttadauria
Prof. Dr. Francesco Giacalone
Dr. Vincenzo Campisciano
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. 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

  • homogeneous and heterogeneous catalysis
  • asymmetric and non-asymmetric transformations
  • hybrid silica- and other oxides-based materials
  • carbon-based materials
  • organometallic-based catalysts
  • organo-based catalysts
  • ionic liquid-like materials
  • metal–organic framework-based catalysts

Published Papers (3 papers)

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Research

16 pages, 4959 KiB  
Article
Hybrid Composite of Sn(IV)-Porphyrin and Mesoporous Structure for Enhanced Visible Light Photocatalytic Degradation of Organic Dyes
by Nirmal Kumar Shee, Beom-Hyeok Park and Hee-Joon Kim
Molecules 2023, 28(4), 1886; https://doi.org/10.3390/molecules28041886 - 16 Feb 2023
Cited by 11 | Viewed by 1226
Abstract
Two hybrid composites (SnP@MCM−41 and SnP@SiO2) were fabricated by chemical adsorption of (trans-dihydroxo)(5,10,15,20-tetraphenylporphyrinato)tin(IV) (SnP) on mesoporous structured Mobil Composition of Matter No. 41 (MCM−41) and SiO2 nanoparticles. These materials were characterized by Fourier-transform infrared spectroscopy, [...] Read more.
Two hybrid composites (SnP@MCM−41 and SnP@SiO2) were fabricated by chemical adsorption of (trans-dihydroxo)(5,10,15,20-tetraphenylporphyrinato)tin(IV) (SnP) on mesoporous structured Mobil Composition of Matter No. 41 (MCM−41) and SiO2 nanoparticles. These materials were characterized by Fourier-transform infrared spectroscopy, ultraviolet–visible spectroscopy, fluorescence spectroscopy, transmission electron microscopy, and field-emission scanning electron microscopy techniques. The incorporation of SnP into MCM−41 and SiO2 supports efficient photocatalytic degradation of the anionic erioglaucine, cationic rhodamine B, and neutral m-cresol purple dyes under visible light irradiation in an aqueous solution. The performances of degradation of these dyes by these photocatalysts under visible light irradiation varied from 87 to 95%. The pseudo-first-order degradation rate constant of organic dyes for SnP@MCM−41 was higher than those of SnP@SiO2 and SnP. These visible light photocatalysts showed remarkable stability and reliable reusability. Full article
(This article belongs to the Special Issue Hybrid Organic-Inorganic Systems for Catalytic Applications)
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17 pages, 4193 KiB  
Article
Supported Poly(Ionic Liquid)-Heteropolyacid Based Materials for Heterogeneous Catalytic Fructose Dehydration in Aqueous Medium
by Elisa I. García-López, Vincenzo Campisciano, Francesco Giacalone, Leonarda Francesca Liotta and Giuseppe Marcì
Molecules 2022, 27(15), 4722; https://doi.org/10.3390/molecules27154722 - 23 Jul 2022
Cited by 4 | Viewed by 1519
Abstract
Two sets of four different supported catalyst materials were prepared. One set was obtained by polymerization of a bis-vinylimidazolium salt, which formed a poly(ionic liquid) coating on SiO2, TiO2, boron nitride BN, and carbon nitride C3N4 [...] Read more.
Two sets of four different supported catalyst materials were prepared. One set was obtained by polymerization of a bis-vinylimidazolium salt, which formed a poly(ionic liquid) coating on SiO2, TiO2, boron nitride BN, and carbon nitride C3N4. The other set was, instead, obtained by immobilizing Keggin heteropolyacid H3PW12O40 onto poly-imidazolium functionalized materials. All the catalysts, including the bare supports, were subjected to physical and chemical characterization by XRD, SEM, Specific Surface Area and pore size measurements, TGA, FTIR, and acidity-basicity measurements. The catalytic activity of the materials was tested versus the fructose dehydration in water solution at two different sugar initial concentrations (0.3 and 1 M). Tests lasted 3 h with an amount of catalyst of 2 g∙L−1. The presence of the poly-imidazolium on the surface of the supports increased the catalytic conversion of fructose to 5-hydroxymethylfurfural (the most abundant compound obtained) and was further improved by the contemporary presence of the heteropolyacid, at least for the highest initial fructose concentration. In the latter conditions, the highest yield of 5-hydroxymethylfurfural (>40%) was also obtained. Full article
(This article belongs to the Special Issue Hybrid Organic-Inorganic Systems for Catalytic Applications)
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Figure 1

12 pages, 4850 KiB  
Communication
First Evidence of Tris(catecholato)silicate Formation from Hydrolysis of an Alkyl Bis(catecholato)silicate
by Vincenzo Campisciano, Benedetto Taormina, Alberto Spinella, Leonarda F. Liotta, Francesco Giacalone and Michelangelo Gruttadauria
Molecules 2022, 27(8), 2521; https://doi.org/10.3390/molecules27082521 - 14 Apr 2022
Cited by 1 | Viewed by 1941
Abstract
The hydrolysis of 3-ammoniumpropylbis(catecholato)silicate 1, giving two different silica-based materials containing different amounts of tris(catecholato)silicate, is reported. The latter species can be formed through an attack of catechol to the silicon atom in the pentacoordinate complex, in which the silicon-carbon bond is further [...] Read more.
The hydrolysis of 3-ammoniumpropylbis(catecholato)silicate 1, giving two different silica-based materials containing different amounts of tris(catecholato)silicate, is reported. The latter species can be formed through an attack of catechol to the silicon atom in the pentacoordinate complex, in which the silicon-carbon bond is further activated toward electrophilic proton cleavage. The Knoevenagel reaction was used as a probe in order to test the availability of functional groups on the surface of such materials. Full article
(This article belongs to the Special Issue Hybrid Organic-Inorganic Systems for Catalytic Applications)
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