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Special Issue "Advances in Mesoporous Materials"

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A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Porous Materials".

Deadline for manuscript submissions: closed (31 January 2013)

Special Issue Editor

Guest Editor
Prof. Dr. Rafael Luque Alvarez de Sotomayor

Departamento de Química Orgánica, Universidad de Córdoba, Campus de Rabanales, Edificio Marie Curie (C-3), Ctra Nnal IV, Km 396, E-14014, Córdoba, Spain
Website | E-Mail
Phone: +34957211050
Interests: green chemistry; biomass valorization; heterogeneous catalysis; nanomaterial design

Special Issue Information

Dear Colleagues,

Mesoporous materials featuring high surface areas, narrow pore size distribution and tuneable pores diameters have attracted a great deal of attention since their discovery in the 1980s due to their promising properties and applications in various areas including adsorption, separation, sensing and catalysis. Innovation through specific and rational design has led to the development of a wide range of these materials with varying morphologies (e.g. hexagonal, cubic, rod-like), structures (e.g. silicates, carbons, metal oxides) and functionalities that currently makes this field one of the most developed in materials science. However, many advances in the field are recently diversifying this exciting area of work to promising applications in drug delivery, tumoral therapy, biomedicine, etc.

This special issue is aimed to provide a range of selected contributions on advances in the design and preparation of different mesoporous materials with their applications in different areas (e.g. catalysis, separation, sensing, adsorption, drug delivery, etc).

Prof. Dr. Rafael Luque
Guest Editor

Submission

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. Papers will be published continuously (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as 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 refereed through a peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Materials 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 1400 CHF (Swiss Francs).

Keywords

  • mesoporous materials
  • silicas
  • carbons
  • metal oxides
  • catalysis
  • adsorption
  • separation
  • sensing
  • drug delivery

Published Papers (12 papers)

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Research

Jump to: Review

Open AccessArticle Highly Dispersed Nickel-Containing Mesoporous Silica with Superior Stability in Carbon Dioxide Reforming of Methane: The Effect of Anchoring
Materials 2014, 7(3), 2340-2355; doi:10.3390/ma7032340
Received: 26 January 2014 / Revised: 12 March 2014 / Accepted: 12 March 2014 / Published: 19 March 2014
Cited by 10 | PDF Full-text (1362 KB) | HTML Full-text | XML Full-text
Abstract
A series of nickel-containing mesoporous silica samples (Ni-SiO2) with different nickel content (3.1%–13.2%) were synthesized by the evaporation-induced self-assembly method. Their catalytic activity was tested in carbon dioxide reforming of methane. The characterization results revealed that the catalysts, e.g., 6.7%Ni-SiO2
[...] Read more.
A series of nickel-containing mesoporous silica samples (Ni-SiO2) with different nickel content (3.1%–13.2%) were synthesized by the evaporation-induced self-assembly method. Their catalytic activity was tested in carbon dioxide reforming of methane. The characterization results revealed that the catalysts, e.g., 6.7%Ni-SiO2, with highly dispersed small nickel particles, exhibited excellent catalytic activity and long-term stability. The metallic nickel particle size was significantly affected by the metal anchoring effect between metallic nickel particles and unreduced nickel ions in the silica matrix. A strong anchoring effect was suggested to account for the remaining of small Ni particle size and the improved catalytic performance. Full article
(This article belongs to the Special Issue Advances in Mesoporous Materials)
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Open AccessArticle Selective Preparation of trans-Carveol over Ceria Supported Mesoporous Materials MCM-41 and SBA-15
Materials 2013, 6(5), 2103-2118; doi:10.3390/ma6052103
Received: 28 March 2013 / Revised: 13 May 2013 / Accepted: 13 May 2013 / Published: 17 May 2013
Cited by 8 | PDF Full-text (724 KB) | HTML Full-text | XML Full-text
Abstract
Ce-modified mesoporous silica materials MCM-41 and SBA-15, namely 32 wt % Ce–Si–MCM-41, 16 wt % Ce–H–MCM-41 and 20 wt % Ce–Si–SBA-15, were prepared, characterized and studied in the selective preparation of trans-carveol by α-pinene oxide isomerization. The characterizations of these catalysts were
[...] Read more.
Ce-modified mesoporous silica materials MCM-41 and SBA-15, namely 32 wt % Ce–Si–MCM-41, 16 wt % Ce–H–MCM-41 and 20 wt % Ce–Si–SBA-15, were prepared, characterized and studied in the selective preparation of trans-carveol by α-pinene oxide isomerization. The characterizations of these catalysts were performed using scanning electron microscopy, X-ray photoelectron spectroscopy, nitrogen adsorption and FTIR pyridine adsorption. Selective preparation of trans-carveol was carried out in the liquid phase in a batch reactor. The activity and the selectivity of catalyst were observed to be influenced by their acidity, basicity and morphology of the mesoporous materials. The formation of trans-carveol is moreover strongly influenced by the basicity of the used solvent and in order to achieve high yields of this desired alcohol it is necessary to use polar basic solvent. Full article
(This article belongs to the Special Issue Advances in Mesoporous Materials)
Open AccessArticle Simple Preparation of Novel Metal-Containing Mesoporous Starches
Materials 2013, 6(5), 1891-1902; doi:10.3390/ma6051891
Received: 18 February 2013 / Revised: 4 April 2013 / Accepted: 3 May 2013 / Published: 10 May 2013
Cited by 3 | PDF Full-text (885 KB) | HTML Full-text | XML Full-text
Abstract
Metal-containing mesoporous starches have been synthesized using a simple and efficient microwave-assisted methodology followed by metal impregnation in the porous gel network. Final materials exhibited surface areas >60 m2 g−1, being essentially mesoporous with pore sizes in the 10–15 nm
[...] Read more.
Metal-containing mesoporous starches have been synthesized using a simple and efficient microwave-assisted methodology followed by metal impregnation in the porous gel network. Final materials exhibited surface areas >60 m2 g−1, being essentially mesoporous with pore sizes in the 10–15 nm range with some developed inter-particular mesoporosity. These materials characterized by several techniques including XRD, SEM, TG/DTA and DRIFTs may find promising catalytic applications due to the presence of (hydr)oxides in their composition. Full article
(This article belongs to the Special Issue Advances in Mesoporous Materials)
Open AccessArticle From Waste to Healing Biopolymers: Biomedical Applications of Bio-Collagenic Materials Extracted from Industrial Leather Residues in Wound Healing
Materials 2013, 6(5), 1599-1607; doi:10.3390/ma6051599
Received: 18 February 2013 / Revised: 7 April 2013 / Accepted: 22 April 2013 / Published: 29 April 2013
Cited by 4 | PDF Full-text (1396 KB) | HTML Full-text | XML Full-text
Abstract
The biomedical properties of a porous bio-collagenic polymer extracted from leather industrial waste residues have been investigated in wound healing and tissue regeneration in induced wounds in rats. Application of the pure undiluted bio-collagen to induced wounds in rats dramatically improved its healing
[...] Read more.
The biomedical properties of a porous bio-collagenic polymer extracted from leather industrial waste residues have been investigated in wound healing and tissue regeneration in induced wounds in rats. Application of the pure undiluted bio-collagen to induced wounds in rats dramatically improved its healing after 7 days in terms of collagen production and wound filling as well as in the migration and differentiation of keratinocytes. The formulation tested was found to be three times more effective than the commercial reference product Catrix® (Heal Progress (HP): 8 ± 1.55 vs. 2.33 ± 0.52, p < 0.001; Formation of Collagen (FC): 7.5 ± 1.05 vs. 2.17 ± 0.75, p < 0.001; Regeneration of Epidermis (RE): 13.33 ± 5.11 vs. 5 ± 5.48, p < 0.05). Full article
(This article belongs to the Special Issue Advances in Mesoporous Materials)
Open AccessArticle Preparation of Palladium-Supported Periodic Mesoporous Organosilicas and their Use as Catalysts in the Suzuki Cross-Coupling Reaction
Materials 2013, 6(4), 1554-1565; doi:10.3390/ma6041554
Received: 1 February 2013 / Revised: 19 March 2013 / Accepted: 8 April 2013 / Published: 17 April 2013
Cited by 9 | PDF Full-text (781 KB) | HTML Full-text | XML Full-text
Abstract
Three periodic mesoporous materials, i.e., two organosilicas with either ethylene or phenylene bridges and one silica, have been used as supports for Pd nanoparticles. All Pd-supported samples (1.0 wt%) were prepared by the incipient wetness method and subsequently reduced in an H
[...] Read more.
Three periodic mesoporous materials, i.e., two organosilicas with either ethylene or phenylene bridges and one silica, have been used as supports for Pd nanoparticles. All Pd-supported samples (1.0 wt%) were prepared by the incipient wetness method and subsequently reduced in an H2 stream at 200 °C. Both hydrogen chemisorption and temperature programmed reduction experiments revealed significant differences depending on the support. Pd2+ species were more reducible on the mesoporous organosilicas than on their silica counterpart. Also, remarkable differences on the particle morphology were observed by transmission electron microscopy. All Pd-supported samples were active in the Suzuki cross-coupling reaction between bromobenzene and phenylboronic acid. Full article
(This article belongs to the Special Issue Advances in Mesoporous Materials)
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Open AccessArticle Extraction of Perchlorate Using Porous Organosilicate Materials
Materials 2013, 6(4), 1403-1419; doi:10.3390/ma6041403
Received: 24 January 2013 / Revised: 21 March 2013 / Accepted: 22 March 2013 / Published: 2 April 2013
PDF Full-text (763 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
Sorbent materials were developed utilizing two morphological structures, comprising either hexagonally packed pores (HX) or a disordered pore arrangement (CF). The sorbents were functionalized with combinations of two types of alkylammonium groups. When capture of perchlorate by the sorbents was compared, widely varying
[...] Read more.
Sorbent materials were developed utilizing two morphological structures, comprising either hexagonally packed pores (HX) or a disordered pore arrangement (CF). The sorbents were functionalized with combinations of two types of alkylammonium groups. When capture of perchlorate by the sorbents was compared, widely varying performance was noted as a result of differing morphology and/or functional group loading. A material providing improved selectivity for perchlorate over perrhenate was synthesized with a CF material using N-trimethoxysilylpropyl-N,N,N-trimethylammonium chloride. Materials were applied in batch and column formats. Binding isotherms followed the behavior expected for a system in which univalent ligands of varying affinity compete for immobilized sites. Performance of the sorbents was also compared to that of commercial Purolite materials. Full article
(This article belongs to the Special Issue Advances in Mesoporous Materials)
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Open AccessArticle Grafting of Amines on Ethanol-Extracted SBA-15 for CO2 Adsorption
Materials 2013, 6(3), 981-999; doi:10.3390/ma6030981
Received: 14 January 2013 / Revised: 19 February 2013 / Accepted: 25 February 2013 / Published: 12 March 2013
Cited by 21 | PDF Full-text (2664 KB) | HTML Full-text | XML Full-text
Abstract
SBA-15 prepared via ethanol extraction for template removing was grafted with three kinds of amine precursors (mono-, di-, tri-aminosilanes) to synthesis new CO2 adsorbents. The SBA-15 support and the obtained adsorbents were characterized by X-ray diffraction (XRD), small-angle X-ray scattering (SAXS), N
[...] Read more.
SBA-15 prepared via ethanol extraction for template removing was grafted with three kinds of amine precursors (mono-, di-, tri-aminosilanes) to synthesis new CO2 adsorbents. The SBA-15 support and the obtained adsorbents were characterized by X-ray diffraction (XRD), small-angle X-ray scattering (SAXS), N2 adsorption/desorption, thermogravimetry (TG), elemental analysis, Fourier transform infrared (FTIR) spectrometry, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). It was found that, except higher silanol density, the ethanol-extracted SBA-15 support possessed a more regular mesophase and thicker walls than traditionally calcined samples, leading to a good stability of the adsorbent under steam treatment. The adsorption capacity of different amine-grafted samples was found to be influenced by not only the surface amine density, but also their physiochemical properties. These observations provide important support for further studies of applying amine-grafted adsorbents in practical CO2 capture process. Full article
(This article belongs to the Special Issue Advances in Mesoporous Materials)
Open AccessArticle Pore Narrowing of Mesoporous Silica Materials
Materials 2013, 6(2), 570-579; doi:10.3390/ma6020570
Received: 22 January 2013 / Revised: 7 February 2013 / Accepted: 16 February 2013 / Published: 20 February 2013
Cited by 1 | PDF Full-text (329 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
To use mesoporous silicas as low-k materials, the pore entrances must be really small to avoid diffusion of metals that can increase the dielectric constant of the low-k dielectric. In this paper we present a new method to narrow the pores of mesoporous
[...] Read more.
To use mesoporous silicas as low-k materials, the pore entrances must be really small to avoid diffusion of metals that can increase the dielectric constant of the low-k dielectric. In this paper we present a new method to narrow the pores of mesoporous materials through grafting of a cyclic-bridged organosilane precursor. As mesoporous material, the well-studied MCM-41 powder was selected to allow an easy characterization of the grafting reactions. Firstly, the successful grafting of the cyclic-bridged organosilane precursor on MCM-41 is presented. Secondly, it is demonstrated that pore narrowing can be obtained without losing porosity by removing the porogen template after grafting. The remaining silanols in the pores can then be end-capped with hexamethyl disilazane (HMDS) to make the material completely hydrophobic. Finally, we applied the pore narrowing method on organosilica films to prove that this method is also successful on existing low-k materials. Full article
(This article belongs to the Special Issue Advances in Mesoporous Materials)
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Open AccessArticle Hemostatic Efficiency and Wound Healing Properties of Natural Zeolite Granules in a Lethal Rabbit Model of Complex Groin Injury
Materials 2012, 5(12), 2586-2596; doi:10.3390/ma5122586
Received: 15 October 2012 / Revised: 26 November 2012 / Accepted: 27 November 2012 / Published: 3 December 2012
Cited by 6 | PDF Full-text (664 KB) | HTML Full-text | XML Full-text
Abstract
Quikclot has been used many years for treating external hemorrhage in the battle field. In this study, the hemostatic performance of NZG-JY (natural zeolite granules from Jinyun, China) was evaluated and compared with Quikclot in a lethal rabbit model of complex groin injury.
[...] Read more.
Quikclot has been used many years for treating external hemorrhage in the battle field. In this study, the hemostatic performance of NZG-JY (natural zeolite granules from Jinyun, China) was evaluated and compared with Quikclot in a lethal rabbit model of complex groin injury. Fifty-six anesthetized rabbits were randomized to three different groups: (1) NZG-JY (n = 19); (2) Quikclot (n = 19); and (3) medical gauze (n = 18). Survival was recorded three hours after the application of the hemostatic agents. The wound healing properties of the survived animals (n = 4 for each group) were observed a week later. The clotting efficiency is 100% for the animals in the NZG-JY and the Quikclot group, while only 5.6% in the gauze group. The mortality in the NZG-JY group (21.0%) is significantly less than that in the Quikclot group (52.6%) and the gauze group (66.7%). A good healing property was achieved in all animals that survived in the NZG-JY group, while three quarters of the animals in the Quikclot group had serious necrotic tissue. NZG-JY significantly decreases the mortality in a lethal rabbit model of complex groin injury and demonstrates good healing properties. Full article
(This article belongs to the Special Issue Advances in Mesoporous Materials)

Review

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Open AccessReview SBA-15 Mesoporous Silica as Catalytic Support for Hydrodesulfurization Catalysts—Review
Materials 2013, 6(9), 4139-4167; doi:10.3390/ma6094139
Received: 5 May 2013 / Revised: 27 August 2013 / Accepted: 28 August 2013 / Published: 17 September 2013
Cited by 34 | PDF Full-text (697 KB) | HTML Full-text | XML Full-text
Abstract
SBA-15 is an interesting mesoporous silica material having highly ordered nanopores and a large surface area, which is widely employed as catalyst supports, absorbents, drug delivery materials, etc. Since it has a lack of functionality, heteroatoms and organic functional groups have been incorporated
[...] Read more.
SBA-15 is an interesting mesoporous silica material having highly ordered nanopores and a large surface area, which is widely employed as catalyst supports, absorbents, drug delivery materials, etc. Since it has a lack of functionality, heteroatoms and organic functional groups have been incorporated by direct or post-synthesis methods in order to modify their functionality. The aim of this article is to review the state-of-the-art related to the use of SBA-15-based mesoporous systems as supports for hydrodesulfurization (HDS) catalysts. Full article
(This article belongs to the Special Issue Advances in Mesoporous Materials)
Open AccessReview A Review on the Synthesis and Applications of Mesostructured Transition Metal Phosphates
Materials 2013, 6(1), 217-243; doi:10.3390/ma6010217
Received: 26 November 2012 / Revised: 20 December 2012 / Accepted: 20 December 2012 / Published: 15 January 2013
Cited by 12 | PDF Full-text (10294 KB) | HTML Full-text | XML Full-text
Abstract
Considerable efforts have been devoted to extending the range of the elemental composition of mesoporous materials since the pioneering work of the M41S family of ordered mesoporous silica by Mobil researchers. The synthesis of transition metal-containing mesostructured materials with large surface area and
[...] Read more.
Considerable efforts have been devoted to extending the range of the elemental composition of mesoporous materials since the pioneering work of the M41S family of ordered mesoporous silica by Mobil researchers. The synthesis of transition metal-containing mesostructured materials with large surface area and high porosity has drawn great attention for its potential applications in acid and redox catalysis, photocatalysis, proton conducting devices, environmental restoration and so on. Thus, various transition metals-containing mesoporous materials, including transition metal-substituted mesoporous silicates, mesostructured transition metal oxides and transition metal phosphates (TMP), have been documented in the literature. Among these, mesostructured TMP materials are less studied, but possess some unique features, partly because of the easy and facile functionalization of PO4 and/or P–OH groups, rendering them interesting functional materials. This review first introduced the general synthesis strategies for manufacturing mesostructured TMP materials, as well as advantages and disadvantages of the respective method; then, we surveyed the ongoing developments of fabrication and application of the TMP materials in three groups on the basis of their components and application fields. Future perspectives on existing problems related to the present synthesis routes and further modifying of the functional groups for the purpose of tailoring special physical-chemical properties to meet wide application requirements were also provided in the last part. Full article
(This article belongs to the Special Issue Advances in Mesoporous Materials)
Open AccessReview A Review: Fundamental Aspects of Silicate Mesoporous Materials
Materials 2012, 5(12), 2874-2902; doi:10.3390/ma5122874
Received: 15 October 2012 / Revised: 23 November 2012 / Accepted: 29 November 2012 / Published: 17 December 2012
Cited by 69 | PDF Full-text (1985 KB) | HTML Full-text | XML Full-text
Abstract
Silicate mesoporous materials have received widespread interest because of their potential applications as supports for catalysis, separation, selective adsorption, novel functional materials, and use as hosts to confine guest molecules, due to their extremely high surface areas combined with large and uniform pore
[...] Read more.
Silicate mesoporous materials have received widespread interest because of their potential applications as supports for catalysis, separation, selective adsorption, novel functional materials, and use as hosts to confine guest molecules, due to their extremely high surface areas combined with large and uniform pore sizes. Over time a constant demand has developed for larger pores with well-defined pore structures. Silicate materials, with well-defined pore sizes of about 2.0–10.0 nm, surpass the pore-size constraint (<2.0 nm) of microporous zeolites. They also possess extremely high surface areas (>700 m2 g−1) and narrow pore size distributions. Instead of using small organic molecules as templating compounds, as in the case of zeolites, long chain surfactant molecules were employed as the structure-directing agent during the synthesis of these highly ordered materials. The structure, composition, and pore size of these materials can be tailored during synthesis by variation of the reactant stoichiometry, the nature of the surfactant molecule, the auxiliary chemicals, the reaction conditions, or by post-synthesis functionalization techniques. This review focuses mainly on a concise overview of silicate mesoporous materials together with their applications. Perusal of the review will enable researchers to obtain succinct information about microporous and mesoporous materials. Full article
(This article belongs to the Special Issue Advances in Mesoporous Materials)

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