Template synthesis and characterization of carbon nanomaterials from ferrocene crystals

Cherkasov, Nikolay; Savilov, S. V.; Иванов, А. С.; Егоров, А. В.; Лунин, В. В.; Ibhadon, Alex O.

doi:10.1016/j.apsusc.2014.04.181

Cited by 12 publications

(4 citation statements)

References 52 publications

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“…The highest temperature peak had the highest C/H ratio of 2.9 demonstrating a graphitic nature of the coke remaining inside the pores. The presence of graphitic coke is also indirectly confirmed by the high oxidation temperature of 485 o C [36][37][38]. Importantly, no formation of H2O and CO2 occurred above 500 o C, showing that this temperature is sufficient for the full removal of the surfactant from the composite catalysts.…”

Section: Characterization Of Composite Catalystsmentioning

confidence: 72%

The enhancement of direct amide synthesis reaction rate over TiO 2 @SiO 2 @NiFe 2 O 4 magnetic catalysts in the continuous flow under radiofrequency heating

Liu

Cherkasov

Gao

et al. 2017

Journal of Catalysis

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2017) The enhancement of direct amide synthesis reaction rate over TiO 2 @SiO 2 @NiFe 2 O 4 magnetic catalysts in the continuous flow under radiofrequency heating. Journal of Catalysis, 355. pp. 120-130. Permanent WRAP URL:Abstract A series of TiO2@SiO2@NiFe2O4 composite magnetic catalyst with a core-double shell structure was synthesized by a sol-gel method. The morphology of the catalysts was studied by XRD, SEM, N2 physisorption and their magnetic properties were examined with magnetometry, and specific absorption rate measurements. The catalytic activity was determined in a direct amide synthesis reaction between aniline and phenylbutyric acid at 150 o C in a fixed bed flow reactor under radiofrequency heating. The intermediate silica layer of the catalyst increased the porosity of the outer titania layer and the specific absorbance rate of the catalyst. The initial reaction rate increased by 61% as compared to a 2 similar core-shell TiO2@NiFe2O4 catalyst showing the detrimental effect of nickel ferrite ontitania. The reaction rate was further increased by a factor of 3.5 after a sulfation treatment due to an optimum Lewis acid site strength. The highest specific reaction rate over TiO2@SiO2@NiFe2O4 was observed at a 7.5 wt.% sulfate loading which was 2.6 times higher as compared to a mechanical mixture of the same composition. The initial reaction rate decreased by 36% after a period of 55 hours on stream. The catalyst activity was restored after a treatment with a H2O2 solution.

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Section: Characterization Of Composite Catalystsmentioning

confidence: 72%

The enhancement of direct amide synthesis reaction rate over TiO 2 @SiO 2 @NiFe 2 O 4 magnetic catalysts in the continuous flow under radiofrequency heating

Liu

Cherkasov

Gao

et al. 2017

Journal of Catalysis

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“…Many various carbon structures with an expanded pore system, including graphene-based materials [13] and nanofibers [14], were developed. Among them, ordered mesoporous carbons (OMCs) seem to be ideal candidates to overcome foregoing drawbacks of ACs.…”

Section: Introductionmentioning

confidence: 99%

Oxidative Dehydrogenation of Ethylbenzene Over Poly(furfuryl alcohol)-Derived CMK-1 Carbon Replica

et al. 2016

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Poly(furfuryl alcohol) was introduced into a pore system of MCM-48 silica by the precipitation polycondensation of furfuryl alcohol (FA). The complete filling of the pores without the deposition of significant amounts of polymer on the external surface of MCM-48 was obtained at the FA/MCM-48 mass ratio close to 1.0. The final structure of carbon replica was formed by subsequent carbonization and extraction of SiO 2 with HF. The carbonization temperature strongly influenced the surface composition of the formed carbon replicas. The highest catalytic activity in the oxidative dehydrogenation of ethylbenzene was observed for CMK-1 with the highest concentration of phenol and carbonyl groups, recognized as active sites of the studied reaction.Graphical Abstract

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“…Metallic impurities, disordered carbon, surface defects, and polycyclic aromatic hydrocarbons in the whole manufacturing process of SWCNTs may cause severe immunological toxicity . Especially in the growing process, hydrocarbons directly decompose on the nanosized metal particles to form metallic particles, and disordered carbons could be inevitably attached to the hollow core or tip of as-grown SWCNTs. , The residual metal catalyst including iron, cobalt, nickel, etc. is one of the major causes of oxidative stress. − The nickel bioavailability is sensitive to postprocessing such as sonication, oxidation, abrasion, and the toxicity of SWCNTs can be reduced by removing the residues. , However, it remains an obstacle to remove the metallic impurities in SWCNTs without introducing additional defects or functional groups.…”

Section: Construction and Properties Of Inorganic/organic Nir-iia/iib...mentioning

confidence: 99%

“…60 Especially in the growing process, hydrocarbons directly decompose on the nanosized metal particles to form metallic particles, and disordered carbons could be inevitably attached to the hollow core or tip of as-grown SWCNTs. 155,156 The residual metal catalyst including iron, cobalt, nickel, etc. is one of the major causes of oxidative stress.…”

Section: Construction and Properties Of Inorganic/organic Nir-iia/iib...mentioning

confidence: 99%

Versatile Types of Inorganic/Organic NIR-IIa/IIb Fluorophores: From Strategic Design toward Molecular Imaging and Theranostics

et al. 2021

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In vivo imaging in the second near-infrared window (NIR-II, 1000−1700 nm), which enables us to look deeply into living subjects, is producing marvelous opportunities for biomedical research and clinical applications. Very recently, there has been an upsurge of interdisciplinary studies focusing on developing versatile types of inorganic/organic fluorophores that can be used for noninvasive NIR-IIa/IIb imaging (NIR-IIa, 1300−1400 nm; NIR-IIb, 1500−1700 nm) with near-zero tissue autofluorescence and deeper tissue penetration. This review provides an overview of the reports published to date on the design, properties, molecular imaging, and theranostics of inorganic/organic NIR-IIa/IIb fluorophores. First, we summarize the design concepts of the up-to-date functional NIR-IIa/IIb biomaterials, in the order of single-walled carbon nanotubes (SWCNTs), quantum dots (QDs), rare-earthdoped nanoparticles (RENPs), and organic fluorophores (OFs). Then, these novel imaging modalities and versatile biomedical applications brought by these superior fluorescent properties are reviewed. Finally, challenges and perspectives for future clinical translation, aiming at boosting the clinical application progress of NIR-IIa and NIR-IIb imaging technology are highlighted.

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Template synthesis and characterization of carbon nanomaterials from ferrocene crystals

Cited by 12 publications

References 52 publications

The enhancement of direct amide synthesis reaction rate over TiO 2 @SiO 2 @NiFe 2 O 4 magnetic catalysts in the continuous flow under radiofrequency heating

The enhancement of direct amide synthesis reaction rate over TiO 2 @SiO 2 @NiFe 2 O 4 magnetic catalysts in the continuous flow under radiofrequency heating

Oxidative Dehydrogenation of Ethylbenzene Over Poly(furfuryl alcohol)-Derived CMK-1 Carbon Replica

Versatile Types of Inorganic/Organic NIR-IIa/IIb Fluorophores: From Strategic Design toward Molecular Imaging and Theranostics

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