Magnetically separable titanium-silicate mesoporous materials with core–shell morphology: synthesis, characterization and catalytic properties

Barmatov, E. B.; Ivanchikova, Irina D.; Kholdeeva, Oxana A.; Shmakov, Alexander N.; Зайковский, В. И.; Mel'gunov, Maxim S.

doi:10.1039/b911381a

Cited by 42 publications

(26 citation statements)

References 52 publications

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“…[299] Although the higher saturation magnetization of magnetite makes it the material of choice at first glance, its rapid oxidation into maghemite is a drawback that may furthermore be difficult to detect with X-ray diffraction methods. [309,299] The direct contact of the catalyst material with the magnetic core can be avoided with a thin layer of amorphous silica or through coating with synthetic-and biopolymers as common practice in biotechnology. [306] For applications involving inorganic catalysts, though, there are many points which speak for amorphous silica as the separation material, for example, its easy deposition from solution with controlled layer thicknesses, the electrically insulating properties and the presence of hydrophilic silanol groups on the materials surface as anchors for further functionalization.…”

Section: Magnetic Separation Of Catalytic Nanoparticlesmentioning

confidence: 99%

Oxide Nanomaterials: Synthetic Developments, Mechanistic Studies, and Technological Innovations

et al. 2010

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Oxide nanomaterials are indispensable for nanotechnological innovations, because they combine an infinite variety of structural motifs and properties with manifold morphological features. Given that new oxide materials are almost reported on a daily basis, considerable synthetic and technological work remains to be done to fully exploit this ever increasing family of compounds for innovative nano-applications. This calls for reliable and scalable preparative approaches to oxide nanomaterials and their development remains a challenge for many complex nanostructured oxides. Oxide nanomaterials with special physicochemical features and unusual morphologies are still difficult to access by classic synthetic pathways. The limitless options for creating nano-oxide building blocks open up new technological perspectives with the potential to revolutionize areas ranging from data processing to biocatalysis. Oxide nanotechnology of the 21st century thus needs a strong interplay of preparative creativity, analytical skills, and new ideas for synergistic implementations.

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Section: Magnetic Separation Of Catalytic Nanoparticlesmentioning

confidence: 99%

Oxide Nanomaterials: Synthetic Developments, Mechanistic Studies, and Technological Innovations

et al. 2010

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“…[299,309] Der direkte Kontakt zwischen katalytischer Substanz und magnetischem Kern kann mittels einer dünnen Schicht amorphen Siliciumdioxids verhindert werden oder alternativ durch die Beschichtung mit synthetischen oder Biopolymeren, wie in der Biotechnologie üblich. [306] Für die Anwendung anorganischer Katalysatoren ist jedoch amorphes Siliciumdioxid als Trennschicht vorzuziehen, da es eine Reihe von Vorteilen bietet, z.…”

Section: G R Patzke Et Alunclassified

Oxidische Nanomaterialien: Von der Synthese über den Mechanismus zur technologischen Innovation

et al. 2010

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Oxidische Nanomaterialien verbinden eine einzigartige und unerschöpfliche Vielfalt struktureller Motive und Eigenschaften mit einer großen Bandbreite morphologischer Variationen – dies macht sie unverzichtbar für nanotechnologische Innovationen. Die Familie der Oxidmaterialien ist in einem stetigen Wachstum begriffen, und somit liegt eine beträchtliche präparative und technologische Arbeit vor uns, um diese Fülle von Komponenten für neuartige Anwendungen auf der Nanoskala zu erschließen. Dies erfordert die Entwicklung zuverlässiger und skalierbarer Präparationsstrategien, die aber besonders für nanostrukturierte Oxide mit komplexer Zusammensetzung eine Herausforderung sind. Mit ihrem anspruchsvollen physikochemischen Hintergrund eröffnen die bislang eingeführten Methoden den Weg zu nanoskaligen Oxiden verschiedenartiger Morphologie, die auf konventionelle Weise nur schwer erhältlich sind. Die vielfältigen modularen Optionen nanoskaliger Oxide als neue Bausteine können revolutionäre Entwicklungen vorantreiben, von der Datenverarbeitung bis hin zur Biokatalyse. Um diese Wechselwirkungen entsprechend zu nutzen, bedarf die Oxid‐Nanotechnologie des 21. Jahrhunderts einer starken Kombination aus präparativer Kreativität, analytischen Instrumentarien und neuen Anwendungsideen.

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“…In this study, titanium‐containing magnetic mesoporous silica spheres (Ti‐MMSS) were synthesized and applied for enrichment of peptides with simultaneous separation of phosphopeptides from nonphosphopeptides. First, Ti‐MMSS, synthesized by a sol–gel method according to previously described method with slight modifications [], were found to contain large surface area, narrow pore size distribution, and excellent magnetic responsivity. The prepared material was used for selective capturing of phosphopeptides and our results demonstrated that the higher selectivity was obtained with Ti‐MMSS than that of commercial titanium dioxide (TiO 2 ) using the same sample preparation procedure.…”

Section: Introductionmentioning

confidence: 99%

Titanium‐containing magnetic mesoporous silica spheres: Effective enrichment of peptides and simultaneous separation of nonphosphopeptides and phosphopeptides

Zhu

et al. 2012

J of Separation Science

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Protein phosphorylation is a common posttranslational modification, and involved in many cellular processes. Like endogenous peptides, endogenous phosphopeptides contain many biomarkers of preclinical screening and disease diagnosis. In this work, titanium-containing magnetic mesoporous silica spheres were synthesized and applied for effective enrichment of peptides from both tryptic digests of standard proteins and human serum. Besides, the enriched peptides can be further separated into nonphosphopeptides and phosphopeptides by a simple elution. First, titanium-containing magnetic mesoporous silica spheres were synthesized by a sol-gel method and found to have high surface area, narrow pore size distribution, and useful magnetic responsivity. Then, as the prepared material was used for selective capturing of phosphopeptides, it demonstrated to have higher selectivity than commercial titanium dioxide. Moreover, via combination of size-exclusion mechanism, hydrophobic interaction, and affinity chromatography, titanium-containing magnetic mesoporous silica spheres were successfully applied to simultaneously extract and separate nonphosphopeptides and phosphopeptides from standard protein digestion and human serum.

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Magnetically separable titanium-silicate mesoporous materials with core–shell morphology: synthesis, characterization and catalytic properties

Cited by 42 publications

References 52 publications

Oxide Nanomaterials: Synthetic Developments, Mechanistic Studies, and Technological Innovations

Oxide Nanomaterials: Synthetic Developments, Mechanistic Studies, and Technological Innovations

Oxidische Nanomaterialien: Von der Synthese über den Mechanismus zur technologischen Innovation

Titanium‐containing magnetic mesoporous silica spheres: Effective enrichment of peptides and simultaneous separation of nonphosphopeptides and phosphopeptides

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