Fabrication of silica nanotubes using silica coated multi-walled carbon nanotubes as the template

Kim, Myunghun; Hong, Jinho; Lee, Jeongwoo; Hong, Chang Kook; Shim, Sang Eun

doi:10.1016/j.jcis.2008.03.045

Cited by 67 publications

(47 citation statements)

References 19 publications

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“…Recently, many scientist focused attention to the synthesis, modification and application of titanium dioxide nanoparticles (Dai et al 2011) and nanocomposites (Hashimoto et al 2009; Jiang et al 2009). According to the literature the enhancement of the photocatalytic performance is possible by: (i) modification titania nanoparticles with guest molecules like nitrogen (Kim et al 2008a), (ii) metals and metals oxides (Kim et al 2008b; Kmenta et al 2010), (iii) synthesis of titania-graphene nanocomposites (Kumar et al 2011; Mao et al 2011) and (iv) deposition of titania particles on the surface of light weight templates with high surface area (Middlemas et al 2013). The commonly studied compounds for synthesis of titania matrix are different nanostructured form of silica.…”

Section: Introductionmentioning

confidence: 99%

Antibacterial performance of nanocrystallined titania confined in mesoporous silica nanotubes

Cendrowski

Perużyńska

Markowska‐Szczupak

et al. 2014

Biomed Microdevices

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In this paper, we study synthesis and characteristics of mesoporous silica nanotubes modified by titanium dioxide, as well as their antimicrobial properties and influence on mitochondrial activity of mouse fibroblast L929. Nanocrystalized titania is confined in mesopores of silica nanotubes and its light activated antibacterial response is revealed. The analysis of the antibacterial effect on Escherichia coli. (ATCC 25922) shows strong enhancement during irradiation with the artificial visible and ultraviolet light in respect to the commercial catalyst and control sample free from the nanomaterials. In darkness, the mesoporous silica/titania nanostructures exhibited antibacterial activity dependent on the stirring speed of the suspension containing nanomaterials. Obtained micrograph proved internalization of the sample into the microorganism trough the cell membrane. The analysis of the mitochondrial activity and amount of lactate dehydrogenase released from mouse fibroblast cells L929 in the presence of the sample were determined with LDH and WST1 assays, respectively. The synthesized silica/titania antibacterial agent also exhibits pronounced photoinduced inactivation of the bacterial growth under the artificial visible and UV light irritation in respect to the commercial catalyst. Additionally, mesoporous silica/titania nanotubes were characterized in details by means of high resolution transmission electron microscopy (HR-TEM), XRD and BET Isotherm.Electronic supplementary materialThe online version of this article (doi:10.1007/s10544-014-9847-3) contains supplementary material, which is available to authorized users.

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Section: Introductionmentioning

confidence: 99%

Antibacterial performance of nanocrystallined titania confined in mesoporous silica nanotubes

Cendrowski

Perużyńska

Markowska‐Szczupak

et al. 2014

Biomed Microdevices

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“…The RuO 2 /CNT@SiO 2 nanohybrids were prepared by using APTES as a coupling layer and TEOS as a hydrolytic reagent [27,28], as the process interpreted in Fig. 1.…”

Section: Resultsmentioning

confidence: 99%

Synthesis and Catalytic Properties of Carbon-Nanotube-Supported RuO2 Catalyst Encapsulated in Silica Coating

Zhang

et al. 2011

Catal Lett

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A carbon-nanotube-supported RuO 2 nanocatalyst encapsulated in thin silica layer was successfully synthesized. The prior formation of silica over RuO 2 nanoparticles effectively hindered catalyst aggregation at high temperatures. The significant improvement of the resistance to sintering and the catalytic selectivity were demonstrated in competitive oxidation of n-butanol and i-butanol and methanol oxidative dehydrogenation.

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“…The major issues in the fabrication of silica nanorods are (1) the improvement of the chemical affinity between silica and CNTs, and (2) the uniform silica layer formation over the CNT surface. 15 In this study, the rapid and uniform fabrication of silica nanorods with SWCNTs as templates via ultrasound was demonstrated. This method provides an efficient way to coat SWCNTs with silica within a short reaction time of less than 20 min.…”

Section: Introductionmentioning

confidence: 91%

Sonochemical Preparation of Silica Nanorods for Gene Delivery Using Single-Walled Carbon Nanotubes as Templates

Lee¹,

Min²,

Wi³

et al. 2011

j nanosci nanotechnol

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Silica nanorods were fabricated with single-walled carbon nanotubes (SWCNTs) via ultrasound. The diameter of the resulting SWCNT-silica particles ranged from 60 to 70 nm. The morphology of this composite material was investigated via scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The individual SWCNTs are uniformly coated with silica and formed a unique nanocomposite material. The important role of ultrasound and the mechanism of silica layer formation on SWCNTs were explained via the hydrolysis of the silica source and the adsorption of the siloxane groups on the SWCNT surfaces under ultrasound irradiation. The amino-functionalized silica nanorods were demonstrated as non-viral vectors for gene delivery.

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Fabrication of silica nanotubes using silica coated multi-walled carbon nanotubes as the template

Cited by 67 publications

References 19 publications

Antibacterial performance of nanocrystallined titania confined in mesoporous silica nanotubes

Antibacterial performance of nanocrystallined titania confined in mesoporous silica nanotubes

Synthesis and Catalytic Properties of Carbon-Nanotube-Supported RuO2 Catalyst Encapsulated in Silica Coating

Sonochemical Preparation of Silica Nanorods for Gene Delivery Using Single-Walled Carbon Nanotubes as Templates

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