SBA-15 mesoporous silica free-standing thin films containing copper ions bounded via propyl phosphonate units - preparation and characterization

Laskowski, Łukasz; Laskowska, Magdalena; Jelonkiewicz, Jerzy; Dulski, Mateusz; Wojtyniak, Marcin; Fitta, Magdalena; Bałanda, Maria

doi:10.1016/j.jssc.2016.06.007

Cited by 15 publications

(4 citation statements)

References 44 publications

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“…For example, 2D structured thin films can possess pores with various diameters, distributed irregularly [ 8 , 9 ] or regularly with possible hexagonal or rectangular arrangement [ 10 , 11 , 12 ], laying parallel [ 13 , 14 ] or perpendicular [ 15 ] to the surface. These latter nanometric layers can be mainly divided into two classes—deposited on various substrates or free standing [ 16 , 17 , 18 , 19 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Vertically Aligned Porous Silica Thin Films Functionalized by Silver Ions

Fedorchuk

Walcarius

Laskowska

et al. 2021

IJMS

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In this work, we have developed a chemical procedure enabling the preparation of highly ordered and vertically aligned mesoporous silica films containing selected contents of silver ions bonded inside the mesopore channels via anchoring propyl-carboxyl units. The procedure involves the electrochemically assisted self-assembly co-condensation of tetraethoxysilane and (3-cyanopropyl)triethoxysilane in the presence of cetyltrimethylammonium bromide as a surfactant, the subsequent hydrolysis of cyano groups into carboxylate ones, followed by their complexation with silver ions. The output materials have been electrochemically characterized with regard to the synthesis effectiveness in order to confirm and quantify the presence of the silver ions in the material. The mesostructure has been observed by transmission electron microscopy. We have pointed out that it is possible to finely tune the functionalization level by controlling the co-condensation procedure, notably the concentration of (3-cyanopropyl)triethoxysilane in the synthesis medium.

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Section: Introductionmentioning

confidence: 99%

Synthesis of Vertically Aligned Porous Silica Thin Films Functionalized by Silver Ions

Fedorchuk

Walcarius

Laskowska

et al. 2021

IJMS

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“…The surface roughness confirmed the presence of fixed metal units on the surface. AFM was found to be a useful process to study the structural topographies of the samples. − Additional comprehensive evidence was obtained by AFM observation. The AFM results confirmed that we obtained even, well-structured mesoporous films of hexagonal channels.…”

Section: Results and Discussionmentioning

confidence: 99%

Development of a Sustainable Tungsten and Iron Bimetal-Immobilized SBA-15 Composite for Enhanced Wet Catalytic Oxidation of Dye Capacity

Patel

Mayani²,

Mayani

2022

ACS Omega

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In this study, wet catalytic decomposition of Orange (II) dye was carried out with tungsten and iron bimetalincorporated mesoporous SBA-15 (W-Fe@SBA-15) under visible light. The synthesized hybrid composite material was characterized by physicochemical methods, powder X-ray diffraction (PXRD) spectroscopy, scanning electron microscopy combined with energy-dispersive X-ray (SEM−EDX) spectroscopy studies, Fourier transform infrared (FT-IR) spectroscopy, transmission electron microscopy (TEM), atomic force microscopy (AFM), thermogravimetric analysis (TGA), and surface property studies to understand the nature of the dye degradation process and for catalytic studies. The maximum degradation of Orange (II) dye measured by a UV−visible spectrophotometer was 99% at a contaminant volume of 2.7 × 10 −4 mol/L and a catalyst quantity of 2 g/ L in 140 min reaction time. Using gas chromatography−mass spectrometry (GC−MS), the final products were chemically identified. The mechanistic steps of the process were carried out through a series of experiments. The recyclability of the catalyst added a novel feature for such a heterogeneous catalysis that can reduce secondary pollutants in water with no leaching effect observed.

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“…The most widely used material of this type is thin films of porous silica [ 157 ]. They can have a three-dimensional pore structure [ 158 ]; however, for sophisticated applications in nanoelectronics, the most interesting ones are those having 2D ordered pores [ 159 , 160 ], due to the possibility of ordering single-molecule magnets in the plane of the substrate, forming a nanometric arrangement of magnetic units. In this case, a thin silica film with appropriately ordered pores is a kind of template, on which the anchoring points for magnetic molecules are marked [ 161 ].…”

Section: Types Of Nanostructures As Substrates For Smmsmentioning

confidence: 99%

Nanostructures as the Substrate for Single-Molecule Magnet Deposition

Adamek,

Pastukh,

Laskowska

et al. 2023

IJMS

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Anchoringsingle-molecule magnets (SMMs) on the surface of nanostructures is gaining particular interest in the field of molecular magnetism. The accurate organization of SMMs on low-dimensional substrates enables controlled interactions and the possibility of individual molecules’ manipulation, paving the route for a broad range of nanotechnological applications. In this comprehensive review article, the most studied types of SMMs are presented, and the quantum-mechanical origin of their magnetic behavior is described. The nanostructured matrices were grouped and characterized to outline to the reader their relevance for subsequent compounding with SMMs. Particular attention was paid to the fact that this process must be carried out in such a way as to preserve the initial functionality and properties of the molecules. Therefore, the work also includes a discussion of issues concerning both the methods of synthesis of the systems in question as well as advanced measurement techniques of the resulting complexes. A great deal of attention was also focused on the issue of surface–molecule interaction, which can affect the magnetic properties of SMMs, causing molecular crystal field distortion or magnetic anisotropy modification, which affects quantum tunneling or magnetic hysteresis, respectively. In our opinion, the analysis of the literature carried out in this way will greatly help the reader to design SMM-nanostructure systems.

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SBA-15 mesoporous silica free-standing thin films containing copper ions bounded via propyl phosphonate units - preparation and characterization

Cited by 15 publications

References 44 publications

Synthesis of Vertically Aligned Porous Silica Thin Films Functionalized by Silver Ions

Synthesis of Vertically Aligned Porous Silica Thin Films Functionalized by Silver Ions

Development of a Sustainable Tungsten and Iron Bimetal-Immobilized SBA-15 Composite for Enhanced Wet Catalytic Oxidation of Dye Capacity

Nanostructures as the Substrate for Single-Molecule Magnet Deposition

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