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Special Issue "Advances in Mesoporous Material 2015"

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

Deadline for manuscript submissions: closed (28 February 2015)

Special Issue Editor

Guest Editor
Prof. Dr. Rafael Luque

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,

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

This Special Issue aims to provide a range of selected contributions on advances in the design and preparation of different mesoporous materials. The issue will also discuss such materials’ applications in different areas (e.g., catalysis, separation, sensing, adsorption, drug delivery, etc).

Prof. Dr. Rafael Luque
Guest Editor

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 papers will be 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. 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 1500 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

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

 

Published Papers (5 papers)

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Research

Open AccessArticle “Low Cost” Pore Expanded SBA-15 Functionalized with Amine Groups Applied to CO2 Adsorption
Materials 2015, 8(5), 2495-2513; doi:10.3390/ma8052495
Received: 1 March 2015 / Revised: 28 April 2015 / Accepted: 30 April 2015 / Published: 11 May 2015
Cited by 9 | PDF Full-text (455 KB) | HTML Full-text | XML Full-text
Abstract
The CO2 adsorption capacity of different functionalized mesoporous silicas of the SBA-15 type was investigated and the influence of textural properties and the effect of the silicon source on the CO2 uptake studied. Several adsorbents based on SBA-15 were synthesized using
[...] Read more.
The CO2 adsorption capacity of different functionalized mesoporous silicas of the SBA-15 type was investigated and the influence of textural properties and the effect of the silicon source on the CO2 uptake studied. Several adsorbents based on SBA-15 were synthesized using sodium silicate as silicon source, replacing the commonly used tetraethyl orthosilicate (TEOS). Thus, we synthesized three couples of supports, two at room temperature (RT, RT-F), two hydrothermal (HT, HT-F) and two hydrothermal with addition of swelling agent (1,3,5-triisopropylbenzene) (TiPB, TiPB-F). Within each couple, one of the materials was synthesized with ammonium fluoride (NH4F). The supports were functionalized via grafting 3-aminopropyltriethoxysilane (APTES) and via impregnation with polyethylenimine ethylenediamine branched (PEI). The adsorption behavior of the pure materials was described well by the Langmuir model, whereas for the amine-silicas, a Dualsite Langmuir model was applied, which allowed us to qualify and quantify two different adsorption sites. Among the materials synthesized, only the SBA-15 synthesized at room temperatures (RT) improved its properties as an adsorbent with the addition of fluoride when the silicas were functionalized with APTES. The most promising result was the TiPB-F/50PEI silica which at 75 °C and 1 bar CO2 captured 2.21 mmol/g. Full article
(This article belongs to the Special Issue Advances in Mesoporous Material 2015)
Figures

Open AccessArticle Spherical V-Fe-MCM-48: The Synthesis, Characterization and Hydrothermal Stability
Materials 2015, 8(4), 1752-1765; doi:10.3390/ma8041752
Received: 14 February 2015 / Revised: 30 March 2015 / Accepted: 31 March 2015 / Published: 14 April 2015
Cited by 5 | PDF Full-text (3981 KB) | HTML Full-text | XML Full-text
Abstract
Spherical MCM-48 mesoporous sieve co-doped with vanadium and iron was successfully synthesized via one-step hydrothermal method. The material was characterized by X-ray diffraction (XRD), nitrogen adsorption-desorption isotherms, inductively coupled plasma (ICP), scanning electron microscopy (SEM), transmission electron microscopy (TEM), diffuse reflectance UV-vis spectra,
[...] Read more.
Spherical MCM-48 mesoporous sieve co-doped with vanadium and iron was successfully synthesized via one-step hydrothermal method. The material was characterized by X-ray diffraction (XRD), nitrogen adsorption-desorption isotherms, inductively coupled plasma (ICP), scanning electron microscopy (SEM), transmission electron microscopy (TEM), diffuse reflectance UV-vis spectra, and X-ray photoelectron spectra (XPS) techniques. Results indicated that the V-Fe-MCM-48 showed an ordered 3D cubic mesostructure with spherical morphology, narrow pore size distribution and high specific surface area. Most of vanadium and iron atoms existing as tetrahedral V4+ and Fe3+ species were co-doped into the silicate framework. The particle sizes of V-Fe-MCM-48 were smaller and the specific area was much higher than those of of V-MCM-48. Additionally, the synthesized V-Fe-MCM-48 exhibited improved hydrothermal stability compared with the pure MCM-48. Full article
(This article belongs to the Special Issue Advances in Mesoporous Material 2015)
Open AccessArticle Tuning the Pore Geometry of Ordered Mesoporous Carbons for Enhanced Adsorption of Bisphenol-A
Materials 2015, 8(4), 1652-1665; doi:10.3390/ma8041652
Received: 25 February 2015 / Revised: 26 March 2015 / Accepted: 31 March 2015 / Published: 10 April 2015
Cited by 5 | PDF Full-text (1002 KB) | HTML Full-text | XML Full-text
Abstract
Mesoporous carbons were synthesized via both soft and hard template methods and compared to a commercial powder activated carbon (PAC) for the adsorption ability of bisphenol-A (BPA) from an aqueous solution. The commercial PAC had a BET-surface of 1027 m2/g with
[...] Read more.
Mesoporous carbons were synthesized via both soft and hard template methods and compared to a commercial powder activated carbon (PAC) for the adsorption ability of bisphenol-A (BPA) from an aqueous solution. The commercial PAC had a BET-surface of 1027 m2/g with fine pores of 3 nm and less. The hard templated carbon (CMK-3) material had an even higher BET-surface of 1420 m2/g with an average pore size of 4 nm. The soft templated carbon (SMC) reached a BET-surface of 476 m2/g and a pore size of 7 nm. The maximum observed adsorption capacity (qmax) of CMK-3 was the highest with 474 mg/g, compared to 290 mg/g for PAC and 154 mg/g for SMC. The difference in adsorption capacities was attributed to the specific surface area and hydrophobicity of the adsorbent. The microporous PAC showed the slowest adsorption, while the ordered mesopores of SMC and CMK-3 enhanced the BPA diffusion into the adsorbent. This difference in adsorption kinetics is caused by the increase in pore diameter. However, CMK-3 with an open geometry consisting of interlinked nanorods allows for even faster intraparticle diffusion. Full article
(This article belongs to the Special Issue Advances in Mesoporous Material 2015)
Figures

Open AccessArticle Preparation and Electrochemical Characterization of Mesoporous Polyaniline-Silica Nanocomposites as an Electrode Material for Pseudocapacitors
Materials 2015, 8(4), 1369-1383; doi:10.3390/ma8041369
Received: 2 February 2015 / Revised: 11 March 2015 / Accepted: 16 March 2015 / Published: 25 March 2015
Cited by 10 | PDF Full-text (1314 KB) | HTML Full-text | XML Full-text
Abstract
Mesoporous polyaniline-silica nanocomposites with a full interpenetrating structure for pseudocapacitors were synthesized via the vapor phase approach. The morphology and structure of the nanocomposites were deeply investigated by scanning electron microscopy, infrared spectroscopy, X-ray diffraction, thermal gravimetric analysis and nitrogen adsorption-desorption tests. The
[...] Read more.
Mesoporous polyaniline-silica nanocomposites with a full interpenetrating structure for pseudocapacitors were synthesized via the vapor phase approach. The morphology and structure of the nanocomposites were deeply investigated by scanning electron microscopy, infrared spectroscopy, X-ray diffraction, thermal gravimetric analysis and nitrogen adsorption-desorption tests. The results present that the mesoporous nanocomposites possess a uniform particle morphology and full interpenetrating structure, leading to a continuous conductive polyaniline network with a large specific surface area. The electrochemical performances of the nanocomposites were tested in a mixed solution of sulfuric acid and potassium iodide. With the merits of a large specific surface area and suitable pore size distribution, the nanocomposite showed a large specific capacitance (1702.68 farad (F)/g) due to its higher utilization of the active material. This amazing value is almost three-times larger than that of bulk polyaniline when the same mass of active material was used. Full article
(This article belongs to the Special Issue Advances in Mesoporous Material 2015)
Open AccessArticle Hierarchical Composites to Reduce N-Nitrosamines in Cigarette Smoke
Materials 2015, 8(3), 1325-1340; doi:10.3390/ma8031325
Received: 8 January 2015 / Revised: 6 March 2015 / Accepted: 16 March 2015 / Published: 20 March 2015
PDF Full-text (1806 KB) | HTML Full-text | XML Full-text
Abstract
In order to reduce the harmful constituents in cigarette smoke, two hierarchical composites were synthesized. Based on, zeolites HZSM-5 or NaY fragments were introduced into the synthetic system of mesoporous silica SBA-15 or MCM-41 and assembled with the mesoporous materials. These porous composites
[...] Read more.
In order to reduce the harmful constituents in cigarette smoke, two hierarchical composites were synthesized. Based on, zeolites HZSM-5 or NaY fragments were introduced into the synthetic system of mesoporous silica SBA-15 or MCM-41 and assembled with the mesoporous materials. These porous composites combine the advantages of micro- and mesoporous materials, and exhibit higher effects than activated carbon on reducing tobacco specific nitrosamines (TSNA) and some vapor phase compounds in smoke. Full article
(This article belongs to the Special Issue Advances in Mesoporous Material 2015)
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