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Materna Mikmeková E, Materna J, Konvalina I, Mikmeková Š, Müllerová I, Asefa T. A soft touch with electron beams: Digging out structural information of nanomaterials with advanced scanning low energy electron microscopy coupled with deep learning. Ultramicroscopy 2024; 262:113965. [PMID: 38640578 DOI: 10.1016/j.ultramic.2024.113965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 03/04/2024] [Accepted: 04/09/2024] [Indexed: 04/21/2024]
Abstract
Nanostructured materials continue to find applications in various electronic and sensing devices, chromatography, separations, drug delivery, renewable energy, and catalysis. While major advancements on the synthesis and characterization of these materials have already been made, getting information about their structures at sub-nanometer resolution remains challenging. It is also unfortunate to find that many emerging or already available powerful analytical methods take time to be fully adopted for characterization of various nanomaterials. The scanning low energy electron microscopy (SLEEM) is a good example to this. In this report, we show how clearer structural and surface information at nanoscale can be obtained by SLEEM, coupled with deep learning. The method is demonstrated using Au nanoparticles-loaded mesoporous silica as a model system. Moreover, unlike conventional scanning electron microscopy (SEM), SLEEM does not require the samples to be coated with conductive films for analysis; thus, not only it is convenient to use but it also does not give artifacts. The results further reveal that SLEEM and deep learning can serve as great tools to analyze materials at nanoscale well. The biggest advantage of the presented method is its availability, as most modern SEMs are able to operate at low energies and deep learning methods are already being widely used in many fields.
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Affiliation(s)
- Eliška Materna Mikmeková
- Institute of Scientific Instruments of the Czech Academy of Sciences, Královopolská 147, 612 64 Brno, Czech Republic
| | - Jiří Materna
- Machine Learning College, s.r.o., Chrlická 787/56, 620 00 Brno, Czech Republic
| | - Ivo Konvalina
- Institute of Scientific Instruments of the Czech Academy of Sciences, Královopolská 147, 612 64 Brno, Czech Republic.
| | - Šárka Mikmeková
- Institute of Scientific Instruments of the Czech Academy of Sciences, Královopolská 147, 612 64 Brno, Czech Republic
| | - Ilona Müllerová
- Institute of Scientific Instruments of the Czech Academy of Sciences, Královopolská 147, 612 64 Brno, Czech Republic
| | - Tewodros Asefa
- Department of Chemistry & Chemical Biology, Rutgers, The State University of New Jersey, 610 Taylor Road, Piscataway, New Jersey 08854, USA; Department of Chemical & Biochemical Engineering, Rutgers, The State University of New, Jersey 98 Brett Road, Piscataway, New Jersey 08854, USA
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Adul-Rasool AA, Athair DM, Zaidan HK, Rheima AM, Al-Sharify ZT, Mohammed SH, Kianfar E. 0,1,2,3D nanostructures, types of bulk nanostructured materials, and drug nanocrystals: An overview. Cancer Treat Res Commun 2024; 40:100834. [PMID: 39013325 DOI: 10.1016/j.ctarc.2024.100834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2024] [Revised: 07/04/2024] [Accepted: 07/08/2024] [Indexed: 07/18/2024]
Abstract
Functional materials are required to meet the needs of society, such as environmental protection, energy storage and conversion, integrated product production, biological and medical processing. bulk nanostructured materials are a research concept that combines nanotechnology with other research fields such as supramolecular chemistry, materials science, and life science to develop logically functional materials from nanodevices. In this review article, nanostructures are synthetized by different methods based on the types and nature of the nanomaterials. In a broad sense "top-down" and "bottom-up" are the two foremost methods to synthesize nanomaterials. In top-down method bulk materials have been reduced to nanomaterials, and in case of bottom-up method, the nanomaterials are synthesized from elementary level. The different methods which are being used to synthesize nanomaterials are chemical vapor deposition method, thermal decomposition, hydrothermal synthesis, solvothermal method, pulsed laser ablation, templating method, combustion method, microwave synthesis, gas phase method, and conventional Sol-Gel method. We also briefly discuss the various physical and chemical methods for producing nanomaterials. We then discuss the applications of functional materials in many areas such as energy storage, supercapacitors, sensors, wastewater treatment, and other biological applications such as drug delivery and drug nanocrystals. Finally, future challenges in materials nanoarchitecture and concepts for further development of functional nanomaterials are briefly discussed.
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Affiliation(s)
| | - Duaa Mohammed Athair
- Mustansiriyah University, Office of the Scientific Assistant, Technology Incubator Division, Baghdad, Iraq
| | | | - Ahmed Mahdi Rheima
- Mustansiriyah University, College of Science, Chemistry Department, Baghdad, Iraq
| | - Zainab T Al-Sharify
- Al Hikma University College, Baghdad, Iraq; School of Chemical Engineering, University of Birmingham, Edgbaston B15 2TT, Birmingham, United Kingdom
| | | | - Ehsan Kianfar
- Young Researchers and Elite Club, Gachsaran Branch, Islamic Azad University, Gachsaran, Iran.
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3
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Nanda SS, Kim D, Yang H, An SSA, Yi DK. Synergistic Effect of SiO 2 and Fe 3O 4 Nanoparticles in Autophagy Modulation. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:1033. [PMID: 38921909 PMCID: PMC11207018 DOI: 10.3390/nano14121033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2024] [Revised: 06/13/2024] [Accepted: 06/13/2024] [Indexed: 06/27/2024]
Abstract
Rapid advancements in nanotechnology have expanded its applications and synergistic impact on modern nanosystems. The comprehensive assessment of nanomaterials' safety for human exposure has become crucial and heightened. In addition to the characterization of cell proliferation and apoptosis, probing the implication of autophagy is vital for understanding the ramification of nanomaterials. Hence, HEK-293 kidney cells were employed to understand the changes in induction and perturbation of autophagy in cells by iron oxide (Fe3O4) and silica (SiO2) nanoparticles. Interestingly, Fe3O4 worked as a potent modulator of the autophagy process through its catalytic performance, which can develop better than that of SiO2 nanoparticles mechanism, stressing their therapeutic implication in the understanding of cell behaviors. The quantification of reactive oxygen species (ROS) was measured along with the process of autophagy during cell growth. This modulated autophagy will help in cell fate determination in complementary therapy for disease treatment, provide a clinical strategy for future study.
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Affiliation(s)
| | - Danyeong Kim
- Department of Bionanotechnology, Gachon Medical Research Institute, Gachon University, Seongnam 13120, Republic of Korea; (D.K.); (H.Y.)
| | - Hyewon Yang
- Department of Bionanotechnology, Gachon Medical Research Institute, Gachon University, Seongnam 13120, Republic of Korea; (D.K.); (H.Y.)
| | - Seong Soo A. An
- Department of Bionanotechnology, Gachon Medical Research Institute, Gachon University, Seongnam 13120, Republic of Korea; (D.K.); (H.Y.)
| | - Dong Kee Yi
- Department of Chemistry, Myongji University, Yongin 17058, Republic of Korea;
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Wawrzyńczak A, Nowak I, Feliczak-Guzik A. SBA-15- and SBA-16-Functionalized Silicas as New Carriers of Niacinamide. Int J Mol Sci 2023; 24:17567. [PMID: 38139403 PMCID: PMC10743396 DOI: 10.3390/ijms242417567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Revised: 12/13/2023] [Accepted: 12/15/2023] [Indexed: 12/24/2023] Open
Abstract
Amorphous silica as a food additive (E 551) is used in food materials (e.g., sweeteners, dairy products) for its anti-caking properties. The physicochemical properties of SiO2 also make it suitable to serve as a carrier of active substances in functional foods, dietary supplements, and drugs. Deficiency of niacinamide (vitamin B3, niacin) leads to several pathologies in the nervous system and causes one of the nutritional diseases called pellagra. The present study focuses on the use of hybrid ordered mesoporous silicas (SBA-15/SBA-16) functionalized with amino groups introduced through grafting or co-condensation with (N-vinylbenzyl)aminoethylaminopropyltrimethoxysilane (Z-6032) as novel carriers of niacinamide. They combine the characteristics of a relatively stable and chemically inert amorphous silica matrix with well-defined structural/textural parameters and organic functional groups that give specific chemical properties. The highest degree of carrier loading with niacinamide (16 wt.%) was recorded for the unmodified SBA-15. On the other hand, the highest degree of niacinamide release characterizes the functionalized SBA-15 sample (60% after 24 h), indicating that the presence of amino groups affects the release profile of niacinamide from the structure of the mesoporous silica.
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Affiliation(s)
| | | | - Agnieszka Feliczak-Guzik
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland; (A.W.); (I.N.)
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Chałupniczak S, Nowak I, Wawrzyńczak A. KIT-5 Structural and Textural Changes in Response to Different Methods of Functionalization with Sulfonic Groups. Int J Mol Sci 2023; 24:ijms24032165. [PMID: 36768489 PMCID: PMC9917139 DOI: 10.3390/ijms24032165] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2022] [Revised: 01/11/2023] [Accepted: 01/13/2023] [Indexed: 01/25/2023] Open
Abstract
In this project, KIT-5 materials were effectively functionalized with sulfonic groups introduced by grafting or the co-condensation method and tested as heterogeneous solid acid catalyst. A co-condensation procedure leading to the stable, -SO3H functionalized KIT-5 materials was successfully established. Moreover, the influence of both synthesis methods on the structural and textural parameters, as well as surface chemistry, morphology, and catalytic activity of -SO3H/KIT-5 materials was thoroughly investigated. The syntheses with 3-mepkaptopropyltrimethoxysilane (MPTMS) acting as a modifying agent resulted in samples in which functional groups were introduced into the structure and/or onto the mesoporous silica surface. The oxidation stage of -SH to -SO3H groups was carried out under mild conditions, using a "green" oxidant (H2O2). The application of different functionalization techniques and the introduction of different amounts of modifying agent allowed for an evaluation of the influence of these parameters on the ordering of the mesoporous structure of KIT-5 materials. The applied methods of assessment of the physicochemical parameters (XRD, low-temperature N2 sorption, TEM) showed that, especially when the co-condensation method was applied, as the number of functional groups increased, the ordering of structure characteristic of KIT-5 decreased. On the other hand, the samples modified by grafting had a stable structure, regardless of the amount of introduced MPTMS. Test reactions carried out on the basis of Friedel-Crafts alkylation process showed that the synthesized materials can be considered promising acid catalysts in heterogeneous catalysis reactions.
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A study on co-modification of MSNs with some transition metals and polyethyleneimine (PEI) as a versatile strategy for efficient delivery of short oligonucleotides. CHEMICAL PAPERS 2022. [DOI: 10.1007/s11696-022-02387-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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7
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Wawrzyńczak A, Jarmolińska S, Nowak I. Nanostructured KIT-6 materials functionalized with sulfonic groups for catalytic purposes. Catal Today 2022. [DOI: 10.1016/j.cattod.2021.06.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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8
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Díez-Rodríguez TM, Blázquez-Blázquez E, Martínez JC, Pérez E, Cerrada ML. Composites of a PLA with SBA-15 mesoporous silica: Polymorphism and properties after isothermal cold crystallization. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124515] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Removal of Pesticides from Waters by Adsorption: Comparison between Synthetic Zeolites and Mesoporous Silica Materials. A Review. MATERIALS 2021; 14:ma14133532. [PMID: 34202727 PMCID: PMC8269501 DOI: 10.3390/ma14133532] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 06/19/2021] [Accepted: 06/23/2021] [Indexed: 01/19/2023]
Abstract
Pesticides are pollutants found in wastewater due to increasing agricultural activities over the years. Inappropriate dosing of pesticides results in the dispersal of active ingredients in the environment. The complete removal of pesticides from wastewater is an immediate concern due to their high toxicity and mobility. At present, adsorption is one of the most widely used methods for pesticide removal, in which synthetic zeolites and mesoporous silica materials are extensively applied. This article presents a systematic and comparative review of the applications and comparison of these adsorbents, based on the data reported in the literature. The paper summarizes the information collected from various studies, including the type of adsorbents and pesticides used, experimental conditions, and results of each work. The studies analyzed were laboratory-based and show potential advantages for the treatment of pesticide-bearing waters using functionalized and unfunctionalized synthetic zeolites and mesoporous silica materials. As a whole, functionalized materials are reported to exhibit better removal performance for different pesticides than conventional materials. It is expected that the results of this review will help researchers to establish a powerful strategy for the abatement of pesticides in wastewater.
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Bidal J, Becuwe M, Hadad C, Fleutot B, Davoisne C, Deschamps M, Porcheron B, Nhien ANV. Hybrid Electrolytes Based on Optimized Ionic Liquid Quantity Tethered on ZrO 2 Nanoparticles for Solid-State Lithium-Ion Conduction. ACS APPLIED MATERIALS & INTERFACES 2021; 13:15159-15167. [PMID: 33760585 DOI: 10.1021/acsami.0c22422] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
This paper describes the simple, highly reproducible, and robust synthesis of a new solid organic/inorganic electrolyte based on the ionic liquid (IL) 1-butyl-3-(carboxyundecyl)imidazolium bis(trifluoromethylsulfonyl)imide tethered to zirconia nanoparticles (15-25 nm) by coordination and named ZrO2@IL. The IL monolayer formation, ensured by two-dimensional solid-state NMR, at the nanoparticles' surface considerably reduces both the IL's consumption and the IL amount at the ZrO2 surface compared to the IL-based hybrid electrolytes reported in the literature. After LiTFSI, used as a lithium source, content optimization (26 wt %), the hybrid exhibits unprecedented stable conductivity passing from 0.6 × 10-4 S.cm-1 to 0.15 × 10-4 S.cm-1, respectively, from 85 °C to room temperature (25 °C). Unlike silica which is commonly adopted for this type of hybrid material, zirconia makes it possible to produce more impact-resistant pellets that are easier to compact, thus being favorable for accurate conductivity studies and battery development by electrode/composite/solid electrolyte layer stacking. The ZrO2@IL/LiTFSI solid hybrid electrolyte's thermal stability (up to 300 °C) and performance make this electrolyte suitable for lithium conduction in all-solid-state batteries.
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Affiliation(s)
- Jennifer Bidal
- Laboratoire de Réactivité et Chimie des Solides, UMR 7314 CNRS, Université de Picardie Jules Verne, 33 rue Saint-leu, Amiens 80039, France
- Laboratoire de Glycochimie, des Antimicrobiens et des Agroressources, UMR 7378 CNRS, Université de Picardie Jules Verne, 33 rue Saint-leu, Amiens 80039, France
- Réseau sur le Stockage Electrochimique de l'Energie (RS2E), CNRS FR3459, 33 rue Saint-leu, Amiens 80039, France
- Institut de Chimie de Picardie FR CNRS 3085, Amiens 80039, France
| | - Matthieu Becuwe
- Laboratoire de Réactivité et Chimie des Solides, UMR 7314 CNRS, Université de Picardie Jules Verne, 33 rue Saint-leu, Amiens 80039, France
- Réseau sur le Stockage Electrochimique de l'Energie (RS2E), CNRS FR3459, 33 rue Saint-leu, Amiens 80039, France
- Institut de Chimie de Picardie FR CNRS 3085, Amiens 80039, France
| | - Caroline Hadad
- Laboratoire de Glycochimie, des Antimicrobiens et des Agroressources, UMR 7378 CNRS, Université de Picardie Jules Verne, 33 rue Saint-leu, Amiens 80039, France
- Institut de Chimie de Picardie FR CNRS 3085, Amiens 80039, France
| | - Benoît Fleutot
- Laboratoire de Réactivité et Chimie des Solides, UMR 7314 CNRS, Université de Picardie Jules Verne, 33 rue Saint-leu, Amiens 80039, France
- Réseau sur le Stockage Electrochimique de l'Energie (RS2E), CNRS FR3459, 33 rue Saint-leu, Amiens 80039, France
- Institut de Chimie de Picardie FR CNRS 3085, Amiens 80039, France
| | - Carine Davoisne
- Laboratoire de Réactivité et Chimie des Solides, UMR 7314 CNRS, Université de Picardie Jules Verne, 33 rue Saint-leu, Amiens 80039, France
- Réseau sur le Stockage Electrochimique de l'Energie (RS2E), CNRS FR3459, 33 rue Saint-leu, Amiens 80039, France
- Institut de Chimie de Picardie FR CNRS 3085, Amiens 80039, France
| | - Michaël Deschamps
- Réseau sur le Stockage Electrochimique de l'Energie (RS2E), CNRS FR3459, 33 rue Saint-leu, Amiens 80039, France
- CNRS Conditions Extrêmes et Matériaux: Haute Température et Irradiation (CEMHTI), UPR 3079, Université d'Orléans, 1D Avenue de la Recherche Scientifique, 45071 Orléans, France
| | - Benjamin Porcheron
- Réseau sur le Stockage Electrochimique de l'Energie (RS2E), CNRS FR3459, 33 rue Saint-leu, Amiens 80039, France
- CNRS Conditions Extrêmes et Matériaux: Haute Température et Irradiation (CEMHTI), UPR 3079, Université d'Orléans, 1D Avenue de la Recherche Scientifique, 45071 Orléans, France
| | - Albert Nguyen Van Nhien
- Laboratoire de Glycochimie, des Antimicrobiens et des Agroressources, UMR 7378 CNRS, Université de Picardie Jules Verne, 33 rue Saint-leu, Amiens 80039, France
- Institut de Chimie de Picardie FR CNRS 3085, Amiens 80039, France
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Functionalization of Silica SBA-15 with [3-(2-Aminoethylamino)Propyl] Trimethoxysilane in Supercritical CO2 Modified with Methanol or Ethanol for Carbon Capture. ENERGIES 2020. [DOI: 10.3390/en13215804] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The CO2 adsorption process using amine-grafted silica is a promising technology for reducing the CO2 emissions from the power and industry sectors. In this work, silica SBA-15 was functionalized using [3-(2-aminoethylamino)propyl] trimethoxysilane (AEAPTS) in supercritical CO2 (scCO2) modified with 10% mol methanol or ethanol. The functionalization experiments were carried out at 323 K and 12.5 MPa, and with reaction times of 2 and 3 h. The molar fraction of AEAPTS in scCO2 plus 10% mol alcohol ranged from 0.5 × 10−3 to 1.8 × 10−3. It was found that as the molar fraction of AEAPTS increased, the amino-grafting density steadily rose, and the pore volume, surface area and pore size of the functionalized silica SBA-15 also decreased gradually. The scCO2 functionalization method was compared to the traditional toluene method. The diamine-SBA-15 prepared in the scCO2 process shows a slightly lower amine-grafting density but a higher surface area and pore volume than the ones obtained using the traditional method. Finally, the excess CO2 adsorption capacity of the materials at different temperatures and low pressure was measured. The diamine-silica SBA-15 displayed moderate excess CO2 adsorption capacities, 0.7–0.9 mmol∙g−1, but higher amine efficiency, ca. 0.4, at 298 K, due to the chemisorption of CO2. These findings show that diamine-grafted silica for post-combustion capture or direct air capture can be obtained using a media more sustainable than organic solvents.
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Jarmolińska S, Feliczak-Guzik A, Nowak I. Synthesis, Characterization and Use of Mesoporous Silicas of the Following Types SBA-1, SBA-2, HMM-1 and HMM-2. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E4385. [PMID: 33019709 PMCID: PMC7579092 DOI: 10.3390/ma13194385] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Revised: 09/25/2020] [Accepted: 09/29/2020] [Indexed: 01/09/2023]
Abstract
Mesoporous silicas have enjoyed great interest among scientists practically from the moment of their discovery thanks to their unique attractive properties. Many types of mesoporous silicas have been described in literature, the most thoroughly MCM-41 and SBA-15 ones. The focus of this review are the methods of syntheses, characterization and use of mesoporous silicas from SBA (Santa Barbara Amorphous) and HMM (Hybrid Mesoporous Materials) groups. The first group is represented by (i) SBA-1 of three-dimensional cubic structure and Pm3n symmetry and (ii) SBA-2 of three-dimensional combined hexagonal and cubic structures and P63/mmc symmetry. The HMM group is represented by (i) HMM-1 of two-dimensional hexagonal structure and p6mm symmetry and (ii) HMM-2 of three-dimensional structure and P63/mmc symmetry. The paper provides comprehensive information on the above-mentioned silica materials available so far, also including the data for the silicas modified with metal ions or/and organic functional groups and examples of the materials applications.
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Affiliation(s)
| | | | - Izabela Nowak
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Uniwersytetu Poznańskiego 8, 61-614 Poznań, Poland; (S.J.); (A.F.-G.)
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13
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Ok S, Hwang B, Liu T, Welch S, Sheets JM, Cole DR, Liu KH, Mou CY. Fluid Behavior in Nanoporous Silica. Front Chem 2020; 8:734. [PMID: 33005606 PMCID: PMC7485247 DOI: 10.3389/fchem.2020.00734] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 07/16/2020] [Indexed: 11/13/2022] Open
Abstract
We investigate dynamics of water (H2O) and methanol (CH3OH and CH3OD) inside mesoporous silica materials with pore diameters of 4.0, 2.5, and 1.5 nm using low-field (LF) nuclear magnetic resonance (NMR) relaxometry. Experiments were conducted to test the effects of pore size, pore volume, type of fluid, fluid/solid ratio, and temperature on fluid dynamics. Longitudinal relaxation times (T1) and transverse relaxation times (T2) were obtained for the above systems. We observe an increasing deviation in confined fluid behavior compared to that of bulk fluid with decreasing fluid-to-solid ratio. Our results show that the surface area-to-volume ratio is a critical parameter compared to pore diameter in the relaxation dynamics of confined water. An increase in temperature for the range between 25 and 50°C studied did not influence T2 times of confined water significantly. However, when the temperature was increased, T1 times of water confined in both silica-2.5 nm and silica-1.5 nm increased, while those of water in silica-4.0 nm did not change. Reductions in both T1 and T2 values as a function of fluid-to-solid ratio were independent of confined fluid species studied here. The parameter T1/T2 indicates that H2O interacts more strongly with the pore walls of silica-4.0 nm than CH3OH and CH3OD.
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Affiliation(s)
- Salim Ok
- School of Earth Sciences, The Ohio State University, Columbus, OH, United States
| | - Bohyun Hwang
- School of Earth Sciences, The Ohio State University, Columbus, OH, United States
| | - Tingting Liu
- School of Earth Sciences, The Ohio State University, Columbus, OH, United States
| | - Susan Welch
- School of Earth Sciences, The Ohio State University, Columbus, OH, United States
| | - Julia M. Sheets
- School of Earth Sciences, The Ohio State University, Columbus, OH, United States
| | - David R. Cole
- School of Earth Sciences, The Ohio State University, Columbus, OH, United States
- Department of Chemistry, The Ohio State University, Columbus, OH, United States
| | - Kao-Hsiang Liu
- Shull Wollan Center-A Joint Institute for Neutron Sciences, Oak Ridge National Laboratory, Oak Ridge, TN, United States
| | - Chung-Yuan Mou
- Department of Chemistry, National Taiwan University, Taipei, Taiwan
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14
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Surfactant-Triggered Molecular Gate Tested on Different Mesoporous Silica Supports for Gastrointestinal Controlled Delivery. NANOMATERIALS 2020; 10:nano10071290. [PMID: 32630076 PMCID: PMC7407901 DOI: 10.3390/nano10071290] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 06/26/2020] [Accepted: 06/27/2020] [Indexed: 12/25/2022]
Abstract
In recent decades, the versatility of mesoporous silica particles and their relevance to develop controlled release systems have been demonstrated. Within them, gated materials able to modulate payload delivery represent great advantages. However, the role played by the porous matrix in this kind of systems is scarce. In this work, different mesoporous silica materials (MCM-41, MCM-48, SBA-15 and UVM-7) are functionalized with oleic acid as a molecular gate. All systems are fully characterized and their ability to confine the entrapped cargo and release it in the presence of bile salts is validated with release assays and in vitro digestion experiments. The cargo release profile of each synthesized support is studied, paying attention to the inorganic scaffold. Obtained release profiles fit to Korsmeyer–Peppas model, which explains the differences among the studied supports. Based on the results, UVM-7 material was the most appropriate system for duodenal delivery and was tested in an in vivo model of the Wistar rat. Payload confinement and its complete release after gastric emptying is achieved, establishing the possible use of mesoporous silica particles as protection and direct release agents into the duodenum and, hence, demonstrating that these systems could serve as an alternative to the administration methods employed until now.
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15
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Ahmadi A, Sedaghat T, Motamedi H, Azadi R. Anchoring of Cu (II)‐Schiff base complex on magnetic mesoporous silica nanoparticles: catalytic efficacy in one‐pot synthesis of 5‐substituted‐1H‐tetrazoles, antibacterial activity evaluation and immobilization of α‐amylase. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5572] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Ameneh Ahmadi
- Department of Chemistry, Faculty of ScienceShahid Chamran University of Ahvaz Ahvaz Iran
| | - Tahereh Sedaghat
- Department of Chemistry, Faculty of ScienceShahid Chamran University of Ahvaz Ahvaz Iran
| | - Hossein Motamedi
- Department of Biology, Faculty of ScienceShahid Chamran University of Ahvaz Ahvaz Iran
- Biotechnology and Biological Science Research CenterShahid Chamran University of Ahvaz Ahvaz Iran
| | - Roya Azadi
- Department of Chemistry, Faculty of ScienceShahid Chamran University of Ahvaz Ahvaz Iran
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16
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Synthesis and characterization of functionalized SBA-15 silica through template removal. J SOLID STATE CHEM 2020. [DOI: 10.1016/j.jssc.2019.121074] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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17
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Cui Y, Atkinson JD. Glycerol-derived magnetic mesoporous Fe/C composites for Cr(VI) removal, prepared via acid-assisted one-pot pyrolysis. CHEMOSPHERE 2019; 228:694-701. [PMID: 31063916 DOI: 10.1016/j.chemosphere.2019.04.181] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2019] [Revised: 04/21/2019] [Accepted: 04/24/2019] [Indexed: 06/09/2023]
Abstract
Rapid increases in biodiesel use results in a surplus of its production by-product, glycerol, exceeding demand by traditional applications. In this study, Fe/C composites are prepared from glycerol-based precursors that include a dissolved iron salt via one-pot, two-stage pyrolysis. The first heating stage dehydrates, polymerizes, and carbonizes glycerol via acid-assisted pyrolysis while homogeneously dispersing a precipitated iron salt throughout the generated carbon matrix. The second stage develops porosity in the carbon support while reducing impregnated iron nanoparticles. Carbon supports with tailored physiochemical properties are generated by varying the dehydration acid (H2SO4 or H3PO4). Fe/C samples are predominantly mesoporous, with specific surface areas up to 560 m2/g and bulk iron contents up to 8.9 wt%, primarily as partially reduced Fe3O4. Cr(VI) removal follows the Freundlich model, reaching 107 mg/g at pH = 5. Mesoporous Fe/C composites are magnetic, allowing collection for reuse. After 4 use/recovery/reuse cycles, performance drops by < 25% when the products are applied in an actual wastewater system. Overall, the magnetic mesoporous Fe/C composite materials are straightforward to produce from waste glycerol and exhibit potential for environmental application in aqueous systems.
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Affiliation(s)
- Yanbin Cui
- State University of New York at Buffalo, Department of Civil, Structural, and Environmental Engineering, Buffalo, NY, 14260, USA
| | - John D Atkinson
- State University of New York at Buffalo, Department of Civil, Structural, and Environmental Engineering, Buffalo, NY, 14260, USA.
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18
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Farjadian F, Azadi S, Mohammadi-Samani S, Ashrafi H, Azadi A. A novel approach to the application of hexagonal mesoporous silica in solid-phase extraction of drugs. Heliyon 2018; 4:e00930. [PMID: 30456326 PMCID: PMC6234517 DOI: 10.1016/j.heliyon.2018.e00930] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 10/29/2018] [Accepted: 11/08/2018] [Indexed: 11/01/2022] Open
Abstract
Mesoporous silica with hexagonal type structure containing amine functional group was introduced. Firstly, aminopropyl hexagonal mesoporous silica was synthetized in a co-condensation process, via templating route of n-dodecylamine. Then synthesized mesoporous material were characterized, and FT-IR spectrum confirmed the presence of amine group and CHN analysis determined the amount of organic layer. The high surface area (750 m2/g) was determined by applying nitrogen adsorption-desorption technique. The morphology was examined by scanning electron microscopy which proved hexagonal structure. The crystallinity of mesoporous material was observed in XRD pattern of this material. According to previous background of such material in adsorbing drug, herein, the efficiency of this material in adsorbing of 5-fluorouracil was evaluated through solid phase extraction method in aqueous and plasma media with high performance liquid chromatography. The extraction efficiency was evaluated for drug concentrations of 500-2000 ng/ml by means of 5-20 mg/ml hexagonal mesoporous silica in both media. The results showed good to excellent recovery rate of in both aqueous and plasma medium which confirmed that the aminopropyl functionalized hexagonal mesoporous silica could be considered as promising device for drug bioanalysis.
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Affiliation(s)
- Fatemeh Farjadian
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Soha Azadi
- Department of Clinical Pharmacy, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Soliman Mohammadi-Samani
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.,Department of Pharmaceutics, Faculty of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Hajar Ashrafi
- Department of Pharmaceutics, Faculty of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Amir Azadi
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran.,Department of Pharmaceutics, Faculty of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
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Levina A, Repkova M, Ismagilov Z, Zarytova V. Methods of the Synthesis of Silicon-Containing Nanoparticles Intended for Nucleic Acid Delivery. EURASIAN CHEMICO-TECHNOLOGICAL JOURNAL 2018. [DOI: 10.18321/ectj720] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
A promising new approach to the treatment of viral infections and genetic diseases associated with damaged or foreign nucleic acids in the body is gene therapy, i.e., the use of antisense oligonucleotides, ribozymes, deoxyribozymes, siRNA, plasmid DNA, etc. (therapeutic nucleic acids). Selective recognition of target nucleic acids by these compounds based on highly specific complementary interaction can minimize negative side effects, which occur with currently used low molecular weight drugs. To apply a new generation of therapeutic agents in medical practice, it is necessary to solve the problem of their delivery into cells. Silicon-containing nanoparticles are considered as promising carriers for this purpose due to their biocompatibility, low toxicity, ability to biodegradation and excretion from the body, as well as the simplicity of the synthesis and modification. Silicon-containing nanoparticles are divided into two broad categories: solid (nonporous) and mesoporous silicon nanoparticles (MSN). This review gives a brief overview of the creation of mesoporous, multilayer, and other silicon-based nanoparticles. The publications concerning solid silicon-organic nanoparticles capable of binding and delivering nucleic acids into cells are discussed in more detail with emphasis on methods for their synthesis. The review covers publications over the past 15 years, which describe the classical Stöber method, the microemulsion method, modification of commercial silica nanoparticles, and other strategies.
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Edmiston PL, Carter KA, Graham AL, Gleason EJ. Chemisorption of microcystins to a thiol and amine functionalized organosilica. Sep Purif Technol 2018. [DOI: 10.1016/j.seppur.2018.01.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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21
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Dheer D, Jyoti, Gupta PN, Shankar R. Tacrolimus: An updated review on delivering strategies for multifarious diseases. Eur J Pharm Sci 2018; 114:217-227. [DOI: 10.1016/j.ejps.2017.12.017] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Revised: 12/12/2017] [Accepted: 12/20/2017] [Indexed: 02/06/2023]
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Trofymchuk I, Roik N, Belyakova L. Structural Variety and Adsorptive Properties of Mesoporous Silicas with Immobilized Oligosaccharide Groups. NANOSCALE RESEARCH LETTERS 2017; 12:307. [PMID: 28449545 PMCID: PMC5406319 DOI: 10.1186/s11671-017-2072-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2016] [Accepted: 04/13/2017] [Indexed: 06/07/2023]
Abstract
In this research, we report on the synthesis of mesoporous silicas with various quantities of immobilized oligosaccharide groups and different pore ordering degree. The hydrothermal co-condensation of tetraethyl orthosilicate and β-cyclodextrin-containing organosilane in the presence of cetyltrimethylammonium bromide template was employed. The purpose of this investigation was to show the opportunity of increasing β-cyclodextrin content in silica matrix by changing the molar ratio of initial reagents during organosilane synthesis and to determine whether the enhancing of immobilized groups on the surface influences on model aromatic compound adsorption from water. It was prepared several β-cyclodextrin-organosilanes by modification of (3-aminopropyl)triethoxysilane with oligosaccharide (the molar composition of reaction mixtures were 1:1, 3:1, and 5:1) with using N,N'-carbonyldiimidazole as linking agent. Three types of MCM-41 materials were obtained with 0.018, 0.072, and 0.095 mmol g-1 β-cyclodextrin-group loading according to chemical analysis of silicas. The IR spectroscopy and potentiometric titration were also performed to confirm the presence of functional groups in the silica matrix. Nitrogen sorptometry experiments exhibited the decrease of high surface area (from 812 to 457 m2 g-1) and the average pore diameter (from 1.06 to 0.60 cm3 g-1) of synthesized silicas with increasing of immobilized oligosaccharide groups. The influence of β-cyclodextrin-organosilane presence on the forming of hexagonally arranged porous structure of silicas was evaluated by X-ray diffraction and TEM analyses. As the loading of oligosaccharide groups increases in obtained silicas, the (100) reflex in diffraction patterns is even less intense and broader, denoting the decrease of long-range pore ordering. Adsorption experiments were carried out to study the effect of β-cyclodextrin groups' attendance in silica matrix on benzene uptakes from aqueous solutions. Experimental kinetic curves of benzene adsorption on synthesized silicas were compared with theoretical models of Lagergren and Ho-McKay for pseudo-first and pseudo-second-order processes. Langmuir and Freundlich isotherm models were used to evaluate adsorption processes and parameters. Obtained β-cyclodextrin-containing MCM-41 silicas demonstrate adsorption level performance of known samples and could be very promising for benzene uptakes from aqueous solutions in water treatment processes.
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Affiliation(s)
- Iryna Trofymchuk
- Chuiko Institute of Surface Chemistry of NAS of Ukraine, 17 General Naumov Str., Kyiv, 03164 Ukraine
| | - Nadiia Roik
- Chuiko Institute of Surface Chemistry of NAS of Ukraine, 17 General Naumov Str., Kyiv, 03164 Ukraine
| | - Lyudmila Belyakova
- Chuiko Institute of Surface Chemistry of NAS of Ukraine, 17 General Naumov Str., Kyiv, 03164 Ukraine
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Stine KJ. Application of Porous Materials to Carbohydrate Chemistry and Glycoscience. Adv Carbohydr Chem Biochem 2017; 74:61-136. [PMID: 29173727 DOI: 10.1016/bs.accb.2017.10.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
There is a growing interest in using a range of porous materials to meet research needs in carbohydrate chemistry and glycoscience in general. Among the applications of porous materials reviewed in this chapter, enrichment of glycans from biological samples prior to separation and analysis by mass spectrometry is a major emphasis. Porous materials offer high surface area, adjustable pore sizes, and tunable surface chemistry for interacting with glycans, by boronate affinity, hydrophilic interactions, molecular imprinting, and polar interactions. Among the materials covered in this review are mesoporous silica and related materials, porous graphitic carbon, mesoporous carbon, porous polymers, and nanoporous gold. In some applications, glycans are enzymatically or chemically released from glycoproteins or glycopeptides, and the porous materials have the advantage of size selectivity admitting only the glycans into the pores and excluding proteins. Immobilization of lectins onto porous materials of suitable pore size allows for the use of lectin-carbohydrate interactions in capture or separation of glycoproteins. Porous material surfaces modified with carbohydrates can be used for the selective capture of lectins. Controlled release of therapeutics from porous materials mediated by glycans has been reported, and so has therapeutic targeting using carbohydrate-modified porous particles. Additional applications of porous materials in glycoscience include their use in the supported synthesis of oligosaccharides and in the development of biosensors for glycans.
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Munz D, Wang D, Moyer MM, Webster-Gardiner MS, Kunal P, Watts D, Trewyn BG, Vedernikov AN, Gunnoe TB. Aerobic Epoxidation of Olefin by Platinum Catalysts Supported on Mesoporous Silica Nanoparticles. ACS Catal 2016. [DOI: 10.1021/acscatal.6b01532] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Dominik Munz
- Department
of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Daoyong Wang
- Department
of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Megan M. Moyer
- Department
of Chemistry, Colorado School of Mines, Golden, Colorado 80401, United States
| | | | - Pranaw Kunal
- Department
of Chemistry, Colorado School of Mines, Golden, Colorado 80401, United States
| | - David Watts
- Department
of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - Brian G. Trewyn
- Department
of Chemistry, Colorado School of Mines, Golden, Colorado 80401, United States
| | - Andrei N. Vedernikov
- Department
of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, United States
| | - T. Brent Gunnoe
- Department
of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
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25
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Guo C, Hu J, Kao L, Pan D, Luo K, Li N, Gu Z. Pepetide Dendron-Functionalized Mesoporous Silica Nanoparticle-Based Nanohybrid: Biocompatibility and Its Potential as Imaging Probe. ACS Biomater Sci Eng 2016; 2:860-870. [DOI: 10.1021/acsbiomaterials.6b00093] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
| | - Jiani Hu
- Department
of Radiology, Wayne State University, Detroit, Michigan 48201, United States
| | - Leslie Kao
- Department
of Radiology, Wayne State University, Detroit, Michigan 48201, United States
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26
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Robertson C, Lodge A, Basa P, Carravetta M, Hector AL, Kashtiban RJ, Sloan J, Smith DC, Spencer J, Walcarius A. Surface modification and porosimetry of vertically aligned hexagonal mesoporous silica films. RSC Adv 2016. [DOI: 10.1039/c6ra23059h] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Grafting vertically aligned mesoporous silica films with small organosilane precursors increases pore hydrophobicity, whereas larger reagents change only the film surfaces.
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Affiliation(s)
| | | | - Peter Basa
- Semilab Semiconductor Physics Laboratory Co. Ltd
- H-1117 Budapest
- Hungary
| | | | | | | | - Jeremy Sloan
- Department of Physics
- University of Warwick
- Coventry CV4 7AL
- UK
| | - David C. Smith
- Physics and Astronomy
- University of Southampton
- Southampton
- UK
| | - Joseph Spencer
- Physics and Astronomy
- University of Southampton
- Southampton
- UK
| | - Alain Walcarius
- Laboratoire de Chimie Physique et Microbiologie pour l'Environnement
- UMR 7564 CNRS – Université de Lorraine
- 54600 Villers-les-Nancy
- France
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27
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Cheung O, Zhang P, Frykstrand S, Zheng H, Yang T, Sommariva M, Zou X, Strømme M. Nanostructure and pore size control of template-free synthesised mesoporous magnesium carbonate. RSC Adv 2016. [DOI: 10.1039/c6ra14171d] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The structure of mesoporous magnesium carbonate (MMC) first presented in 2013 is investigated using a bottom-up approach.
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Affiliation(s)
- Ocean Cheung
- Division for Nanotechnology and Functional Materials
- Department of Engineering Sciences
- Uppsala University
- Uppsala
- Sweden
| | - Peng Zhang
- Division for Nanotechnology and Functional Materials
- Department of Engineering Sciences
- Uppsala University
- Uppsala
- Sweden
| | - Sara Frykstrand
- Division for Nanotechnology and Functional Materials
- Department of Engineering Sciences
- Uppsala University
- Uppsala
- Sweden
| | - Haoquan Zheng
- Department of Materials and Environmental Chemistry
- Stockholm University
- Stockholm
- Sweden
| | - Taimin Yang
- Department of Materials and Environmental Chemistry
- Stockholm University
- Stockholm
- Sweden
| | | | - Xiaodong Zou
- Department of Materials and Environmental Chemistry
- Stockholm University
- Stockholm
- Sweden
| | - Maria Strømme
- Division for Nanotechnology and Functional Materials
- Department of Engineering Sciences
- Uppsala University
- Uppsala
- Sweden
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28
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Dudarko OА, Gunathilake C, Wickramaratne NP, Sliesarenko VV, Zub YL, Górka J, Dai S, Jaroniec M. Synthesis of mesoporous silica-tethered phosphonic acid sorbents for uranium species from aqueous solutions. Colloids Surf A Physicochem Eng Asp 2015. [DOI: 10.1016/j.colsurfa.2015.04.016] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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29
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Etienne M, Zhang L, Vilà N, Walcarius A. Mesoporous Materials-Based Electrochemical Enzymatic Biosensors. ELECTROANAL 2015. [DOI: 10.1002/elan.201500172] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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31
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Prosser JH, Lee D. Ionothermal Stability of Mesoporous Silica Films. Ind Eng Chem Res 2015. [DOI: 10.1021/ie5041308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jacob H. Prosser
- Department of
Chemical and Biomolecular Engineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Daeyeon Lee
- Department of
Chemical and Biomolecular Engineering, School of Engineering and Applied Science, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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32
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Yuan N, Liang Y, Erichsen ES, Anwander R. Embedding lanthanide-functionalized polymers into hollow mesoporous silica spheres: a ship-in-a-bottle approach to luminescent hybrid materials. RSC Adv 2015. [DOI: 10.1039/c5ra11612k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Using hollow mesoporous silica spheres (HMSS) as host (“bottle”) and 4-vinylpyridine (4VP), Ln(iii) chlorides (Ln = Eu, Tb), and 1,10-phenanthroline (Phen) as “ship” components gives facile access to luminescent hybrid materials.
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Affiliation(s)
- Ning Yuan
- Institut für Anorganische Chemie
- Eberhard Karls Universität Tübingen
- 72076 Tübingen
- Germany
| | - Yucang Liang
- Institut für Anorganische Chemie
- Eberhard Karls Universität Tübingen
- 72076 Tübingen
- Germany
| | | | - Reiner Anwander
- Institut für Anorganische Chemie
- Eberhard Karls Universität Tübingen
- 72076 Tübingen
- Germany
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33
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Chen C, Kim J, Ahn WS. CO2 capture by amine-functionalized nanoporous materials: A review. KOREAN J CHEM ENG 2014. [DOI: 10.1007/s11814-014-0257-2] [Citation(s) in RCA: 96] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Ledeuil JB, Uhart A, Soulé S, Allouche J, Dupin JC, Martinez H. New insights into micro/nanoscale combined probes (nanoAuger, μXPS) to characterize Ag/Au@SiO2 core-shell assemblies. NANOSCALE 2014; 6:11130-11140. [PMID: 25212498 DOI: 10.1039/c4nr03211j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
This work has examined the elemental distribution and local morphology at the nanoscale of core@shell Ag/Au@SiO2 particles. The characterization of such complex metal/insulator materials becomes more efficient when using an initial cross-section method of preparation of the core@shell nanoparticles (ion milling cross polisher). The originality of this route of preparation allows one to obtain undamaged, well-defined and planar layers of cross-cut nano-objects. Once combined with high-resolution techniques of characterization (XPS, Auger and SEM), the process appears as a powerful way to minimize charging effects and enhance the outcoming electron signal (potentially affected by the topography of the material) during analysis. SEM experiments have unambiguously revealed the hollow-morphology of the metal core, while Auger spectroscopy observations showed chemical heterogeneity within the particles (as silver and gold are randomly found in the core ring). To our knowledge, this is the first time that Auger nano probe spectroscopy has been used and successfully optimized for the study of some complex metal/inorganic interfaces at such a high degree of resolution (≈12 nm). Complementarily, XPS Au 4f and Ag 3d peaks were finally detected attesting the possibility of access to the whole chemistry of such nanostructured assemblies.
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Affiliation(s)
- J B Ledeuil
- IPREM -ECP - UMR CNRS 5254, Université de Pau et des Pays de l'Adour, Technopole Hélioparc, 2 Avenue Président Pierre Angot, PAU Cedex 09, 64053 Pau, France.
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Doro F, Ramos A, Schneider J, Rodrigues-Filho U, Veiga M, Yano C, Negreti A, Krieger M, Tfouni E. Deposition of organic−inorganic hybrid coatings over 316L surgical stainless steel and evaluation on vascular cells. CAN J CHEM 2014. [DOI: 10.1139/cjc-2014-0034] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Surface coating of metallic materials using the sol-gel technique is a suitable approach to obtain hybrid materials with improved properties for biomedical applications. In this study, an AISI 316L stainless steel surface was coated with ormosils prepared from tetraethylsiloxane and 3-glycidoxypropyltrimethoxysilane or polydimethylsiloxane. The characterization of structural and surface properties was performed by several techniques. Surface microstructure, morphology, and energy are dependent on organosilane type and content. Chemical stability of coatings was investigated by static immersion tests in phosphate buffer solution at 37 °C, and silicon leaching after 21 days was found to be in the range of ∼200−300 μg L−1. Mechanical adhesion was found to be within 1.0 and 3.7 N cm−1. The interaction of the samples and materials in the cardiovascular environment was investigated through cellular behavior. Biological assays were performed with slides to avoid any cytotoxic effects on human endothelial cells (HUVEC) and rabbit arterial smooth muscle cells (RASM). No significant alterations were observed after 24 h in the viability of RASM and HUVEC cells exposed to different coatings. No increase of HUVEC or RASM migration was observed after 24 h as evaluated by transwell migration assay. The hybrid materials showed suitable properties for potential application as biomaterials in cardiovascular environment as well as for incorporation of bioactive species with the aim to prepare drug-eluting stents.
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Affiliation(s)
- F.G. Doro
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto. Universidade de São Paulo, 14040-901, Ribeirão Preto, SP, Brazil
- Departamento de Química Geral e Inorgânica, Instituto de Química, Universidade Federal da Bahia, 40170-290, Salvador, BA, Brazil
| | - A.P. Ramos
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto. Universidade de São Paulo, 14040-901, Ribeirão Preto, SP, Brazil
| | - J.F. Schneider
- Instituto de Física de São Carlos, Universidade de São Paulo, São Carlos, Brazil
| | - U.P. Rodrigues-Filho
- Instituto de Química de São Carlos, Universidade de São Paulo, CP 780, 13563-120 São Carlos, SP, Brazil
| | - M.A.M.S. Veiga
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto. Universidade de São Paulo, 14040-901, Ribeirão Preto, SP, Brazil
| | - C.L. Yano
- Departamento de Fisiologia e Biofísica, Instituto de Biologia, Universidade Estadual de Campinas, UNICAMP, SP, Brazil
| | - A. Negreti
- Departamento de Fisiologia e Biofísica, Instituto de Biologia, Universidade Estadual de Campinas, UNICAMP, SP, Brazil
| | - M.H. Krieger
- Departamento de Fisiologia e Biofísica, Instituto de Biologia, Universidade Estadual de Campinas, UNICAMP, SP, Brazil
| | - E. Tfouni
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto. Universidade de São Paulo, 14040-901, Ribeirão Preto, SP, Brazil
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Abstract
Catalysis plays a key role in chemical production, energy processing, air purification, water treatment, food processing, and the life sciences. Nanostructured materials with high surface areas and some unique properties have received widespread interest in electrocatalysis and photocatalysis. Recently, the author’s research team has designed and studied a variety of novel functional nanomaterials. This review article is derived from the author’s 2013 Canadian Catalysis Lectureship Award Lecture and focuses primarily on the electrocatalytic activities of platinum- and palladium-based nanomaterials and the development of TiO2-based nanostructured photocatalysts. Palladium possesses several exceptional properties that may enable promising applications in hydrogen detection, purification, and storage. The significant roles of palladium-based nanomaterials in facilitating the growth of a hydrogen economy are addressed. As platinum-based catalysts are vital to the development of fuel cells and sensors, the design of high-performance platinum-based electrocatalysts is highlighted. Additionally, TiO2 is considered to be one of the most promising photocatalysts due to its nontoxicity, high stability, and cost effectiveness. The modification of TiO2 nanomaterials to achieve visible light response is discussed as well. It is anticipated that the development of advanced functional nanostructured catalysts will further improve the efficiency and reduce the cost of electrochemical and photochemical processes, making them more attractive in addressing the pressing global energy and environmental issues.
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Affiliation(s)
- Aicheng Chen
- Department of Chemistry, Lakehead University, 955 Oliver Road, Thunder Bay, ON P7B 5E1, Canada
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37
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Preparation and application of monodispersed mesoporous submicron carbon particles as a drug carrier. POWDER TECHNOL 2014. [DOI: 10.1016/j.powtec.2014.04.044] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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38
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Tao Q, He H, Li T, Frost RL, Zhang D, He Z. Tailoring surface properties and structure of layered double hydroxides using silanes with different number of functional groups. J SOLID STATE CHEM 2014. [DOI: 10.1016/j.jssc.2014.02.032] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Qi Y, Li L, Fang Z, Zhong J, Dong Q. Effects of small molecular weight silicon-containing acrylate on kinetics, morphologies, and properties of free-radical/cationic hybrid UV-cured coatings. J Appl Polym Sci 2014. [DOI: 10.1002/app.40655] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Yuanchun Qi
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering; East China University of Science and Technology; Shanghai 200237 People's Republic of China
| | - Lingling Li
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering; East China University of Science and Technology; Shanghai 200237 People's Republic of China
| | - Zhou Fang
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering; East China University of Science and Technology; Shanghai 200237 People's Republic of China
| | - Jianfeng Zhong
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering; East China University of Science and Technology; Shanghai 200237 People's Republic of China
| | - Qingzhi Dong
- Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering; East China University of Science and Technology; Shanghai 200237 People's Republic of China
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Xie Z, Bai L, Huang S, Zhu C, Zhao Y, Gu ZZ. New Strategy for Surface Functionalization of Periodic Mesoporous Silica Based on meso-HSiO1.5. J Am Chem Soc 2014; 136:1178-81. [DOI: 10.1021/ja409340q] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Zhuoying Xie
- State
Key Laboratory of Bioelectronics, School of Biological Science and
Medical Engineering, Southeast University, Nanjing 210096, China
- Laboratory
of Environment and Biosafety, Research Institute of Southeast University in Suzhou, Suzhou 215123, China
| | - Ling Bai
- State
Key Laboratory of Bioelectronics, School of Biological Science and
Medical Engineering, Southeast University, Nanjing 210096, China
| | - Suwen Huang
- State
Key Laboratory of Bioelectronics, School of Biological Science and
Medical Engineering, Southeast University, Nanjing 210096, China
| | - Cun Zhu
- State
Key Laboratory of Bioelectronics, School of Biological Science and
Medical Engineering, Southeast University, Nanjing 210096, China
| | - Yuanjin Zhao
- State
Key Laboratory of Bioelectronics, School of Biological Science and
Medical Engineering, Southeast University, Nanjing 210096, China
| | - Zhong-Ze Gu
- State
Key Laboratory of Bioelectronics, School of Biological Science and
Medical Engineering, Southeast University, Nanjing 210096, China
- Laboratory
of Environment and Biosafety, Research Institute of Southeast University in Suzhou, Suzhou 215123, China
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Lofgreen JE, Ozin GA. Controlling morphology and porosity to improve performance of molecularly imprinted sol–gel silica. Chem Soc Rev 2014; 43:911-33. [DOI: 10.1039/c3cs60276a] [Citation(s) in RCA: 261] [Impact Index Per Article: 26.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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43
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Kharkov BB, Dvinskikh SV. Chain dynamics of surfactants in mesoporous silica. Phys Chem Chem Phys 2013; 15:18620-6. [PMID: 24080836 DOI: 10.1039/c3cp52562g] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Mesostructured porous materials possess unique surface, structural, and bulk properties that lead to important practical applications. By retaining structure-directing species in the product material, mesostructured organic-inorganic composites are obtained which are of broad interest for fundamental studies of confinement effects and surface interaction on structural and dynamic properties of organic molecules. In the present study, solid state dipolar (13)C-(1)H NMR spectroscopy is applied to quantitatively characterize the conformational dynamics of organic surfactants in the mesostructured composite CTAB-MCM41. Such an approach does not require assumptions and adjustable parameters and reflects the changes in conformational dynamics without relying on specific motional models. The conformational dynamics of the surfactant confined in solid hexagonal arrays is compared to that in hexagonal aggregates formed in a concentrated aqueous solution. The study showed that in cylindrical pores of hexagonal mesoporous silica the order parameter gradually decreases towards the end of the chain. The degree of order and the order parameter profile is similar to that observed in hexagonal liquid crystalline phases. However, the mobility of segments close to the head group is more restricted compared to that in the mesophase, as the result of interaction with the solid silica interface.
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Affiliation(s)
- B B Kharkov
- Royal Institute of Technology KTH, Department of Chemistry, Teknikringen 36, SE-10044 Stockholm, Sweden.
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45
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Jollet V, Albela B, Sénéchal-David K, Jégou P, Kolodziej E, Sainton J, Bonneviot L, Banse F. Confinement of a bioinspired nonheme Fe(II) complex in 2D hexagonal mesoporous silica with metal site isolation. Dalton Trans 2013; 42:11607-13. [PMID: 23824307 DOI: 10.1039/c3dt50590a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A mixed amine pyridine polydentate Fe(II) complex was covalently tethered in hexagonal mesoporous silica of the MCM-41 type. Metal site isolation was generated using adsorbed tetramethylammonium cations acting as a patterned silanol protecting mask and trimethylsilylazane as a capping agent. Then, the amine/pyridine ligand bearing a tethering triethoxysilane group was either grafted to such a pretreated silica surface prior to or after complexation to Fe(II). These two synthetic routes, denoted as two-step and one-step, respectively, were also applied to fumed silica for comparison, except that the silanol groups were capped after tethering the metal unit. The coordination of the targeted complex was monitored using UV-visible spectrophotometry and, according to XPS, the best control was achieved inside the channels of the mesoporous silica for the two-step route. For the solid prepared according to the one-step route, tethering of the complex occurred mainly at the entrance of the channel.
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Affiliation(s)
- Véronique Jollet
- Institut de Chimie Moléculaire et des Matériaux d'Orsay, Laboratoire de Chimie Inorganique, Université Paris Sud, F-91405 Orsay Cedex, France
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