Regulation of the size of metal iron nanoparticles in channels of mesoporous silica matrices (MCM-41, SBA-15) and structure and magnetic properties of the received nanocomposites МСМ-41/Fe0 and SBA-15/Fe0

Zemtsova, E. G.; Arbenin, A. Yu.; Galiullina, Laysan F.; Ponomareva, A. N.; Sokolova, Daria N.; Смирнов, В. М.

doi:10.1007/s11051-020-04960-1

Cited by 4 publications

(3 citation statements)

References 27 publications

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“…The hexagonal but mesoporous structure of the material was unaffected by the incorporation of Eu and Gd. 23 Therefore, the nanoparticle carrier rMSN, which is prepared from rice husks and used for the synthesis of bio-silicon, has the same structure as the nanoparticle carrier rMSN synthesized using chemicals. It had a hexagonal and regular arrangement of pores.…”

Section: Resultsmentioning

confidence: 99%

Mesoporous silica nanoparticles with dual-targeting agricultural sources for enhanced cancer treatment via tritherapy

et al. 2023

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Section: Resultsmentioning

confidence: 99%

Mesoporous silica nanoparticles with dual-targeting agricultural sources for enhanced cancer treatment via tritherapy

et al. 2023

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“…Fe species in the mesoporous framework material are tetrahedrally coordinated and turn to iron oxide after high-temperature calcination [ 16 ]. Iron-containing SBA-15 was determined for the characteristics of ironic catalytic materials [ 17 ], conducted to remove phenolic aqueous solutions [ 18 ], and was used to develop magnetic material for drug delivery in the medicine industry [ 19 ].In addition, metal oxide-incorporated mesoporous SBA-15 materials were employed as a non-enzymatic sensing device for glucose detection, and the Cu-SBA-15-modified electrode presented electro-catalytic activity toward the oxidation of glucose [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

Nitrogen Adsorption and Characteristics of Iron, Cobalt, and Nickel Oxides Impregnated on SBA-15 Mesoporous Silica

2023

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Hexagonal SBA-15 mesoporous material was used as a catalytic template for impregnation, with the transition metals Fe, Co, and Ni as catalysts for chemical transformation. Nitrogen adsorption/desorption isotherms, scanning electron microscopy, and transmission electron microscopy were conducted to better understand the physicochemical properties of the metal oxide-impregnated SBA-15. The specific surface area of the original SBA-15 was approximately 680 m2/g, and the abundances of the catalysts impregnated ranged from 2 to 8%, corresponding to specific surface areas of 560–470 m2/g for Fe-SBA-15, 440–340 m2/g for Ni-SBA-15, and 410–340 m2/g for Co-SBA-15. The increase in impregnated metal loadings filled the pores and collapsed the silica walls during the metal oxides impregnation on SBA-15 and calcination procedures, resulting in a decrease in the specific surface area and pore volume of the templates. The results showed that the order of nitrogen adsorbed was SBA-15 > Fe-SBA-15 > Ni-SBA-15 > Co-SBA-15 when the metal loading was 5%. In addition, the metal oxides on SBA-15 increased the wall thickness compared with raw SBA-15. Based on the XRD spectrum analysis, Fe2O3, Co3O4, and NiO were the stable crystals on the Fe-SBA-15, Co-SBA-15, and Ni-SBA-15, respectively. The sequence of the average grain size of metal oxides on SBA-15 was Co-SBA-15 > Fe-SBA-15 > Ni-SBA-15, according to XRD spectra and Scherrer’s equation. Isopropanol could be decomposed by metal oxide-impregnated SBA-15 to form carbon filament materials. Therefore, these materials have the potential to be employed for pollutant removal, catalytic reactions for organic solvent and bio-oil/biomass reforming, and recycling waste into high-value materials.

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“…In the field of chemical materials science, many objects are obtained by self-organization, for example, micelles [ 7 ], liquid crystals [ 8 ], self-organizing monolayers [ 9 ], anodic mesoporous films [ 10 ], metal-organic frameworks [ 11 ], polymer microphase separations [ 12 ], Blodgett–Langmuir films [ 13 ], and colloidal crystals [ 14 ]. Many self-organizing objects can act as templates to produce materials with a given structure, for example, micelles are used for producing nanoparticles [ 15 , 16 , 17 ], micelles assembled in liquid crystal are used for producing mesoporous materials [ 18 , 19 , 20 ], and anodized or liquid crystal templated mesoporous materials are often used as a template for producing nanoparticles [ 21 , 22 , 23 ], nanowires [ 24 , 25 , 26 ], etc.…”

Section: Introductionmentioning

confidence: 99%

Features of Fabrication of Titanium Dioxide Based Coatings for Non-Lithographic Template Electrochemical Synthesis of Micron Metal Particle Arrays

Arbenin

Zemtsova

Orekhov

et al. 2021

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This work is devoted to the development of non-lithographic template methods of synthesis. These methods have a significant advantage in terms of structure formation: there is no need to design and produce masks, which greatly simplifies the process, and more of them can work with nonplanar substrates. The purpose of this study was to reveal the conditions for the synthesis of titanium dioxide xerogel films of different topologies as well as to develop a technique for non-lithographic template electrochemical synthesis of micron metal particles arrays and to study the structure of the resulting coatings. The films were deposited on the surface of substrates via dip coating. Specific topology of the films was achieved by template sol-gel synthesis. Their structures were analyzed by SEM and XRD. Template synthesis of metal micro particles were realized by pulsed electrochemical deposition of metals into the perforations of xerogel films. Obtained materials were analyzed by SEM and XRD; the element distribution on the surface was determined by the EDS detector of SEM. Based on the analysis results, we suggest the mechanisms of formation of the xerogel topology and proved the efficiency of pulsed electrodeposition for template synthesis of micron particles arrays.

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Regulation of the size of metal iron nanoparticles in channels of mesoporous silica matrices (MCM-41, SBA-15) and structure and magnetic properties of the received nanocomposites МСМ-41/Fe0 and SBA-15/Fe0

Cited by 4 publications

References 27 publications

Mesoporous silica nanoparticles with dual-targeting agricultural sources for enhanced cancer treatment via tritherapy

Mesoporous silica nanoparticles with dual-targeting agricultural sources for enhanced cancer treatment via tritherapy

Nitrogen Adsorption and Characteristics of Iron, Cobalt, and Nickel Oxides Impregnated on SBA-15 Mesoporous Silica

Features of Fabrication of Titanium Dioxide Based Coatings for Non-Lithographic Template Electrochemical Synthesis of Micron Metal Particle Arrays

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