Development of novel surfactant-templated nanostructured thin SiO2, and SiO2–TiO2 films

Dittert, B.; Stenzel, Frauke; Ziegler, G.

doi:10.1016/j.jnoncrysol.2006.08.038

Cited by 7 publications

(6 citation statements)

References 23 publications

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“…The curves are similar except for the pore-TiO 2 film where a peak corresponding to a characteristic length of 6.8 nm is present. This length is slightly less than the 8 nm spacing observed at the surface of SiO 2 film where Brij 58 was used as the template . Measurements of tubes made directly from the micrograph (not shown) show that the characteristic length can be attributed to the width of the tubular structure (Figure , middle image).…”

Section: Resultsmentioning

confidence: 84%

“…This length is slightly less than the 8 nm spacing observed at the surface of SiO 2 film where Brij 58 was used as the template. 25 Measurements of tubes made directly from the micrograph (not shown) show that the characteristic length can be attributed to the width of the tubular structure (Figure 6, middle image). However, as the AFM tip used in this study has a curvature radius between 5 and 10 nm, we cannot exclude tip convolution leading to an overestimation of the measured lateral distance.…”

Section: Resultsmentioning

confidence: 99%

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TiO₂ Thin Films Self-Assembled with a Partly Fluorinated Surfactant Template

Henderson

Zimny²,

Blin³

et al. 2009

Langmuir

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New TiO(2) films have been self-assembled on solid substrate by dip-coating using TiCl(4) as the titanium source and the partly fluorinated surfactant F(CF(2))(8)C(2)H(4)(OC(2)H(4))(9)OH as the liquid crystal template. By control over the dip-withdrawal speed, film thicknesses from a minimum of 43 nm were produced with rms roughnesses of 0.5-0.7 nm. The films were characterized by X-ray reflectivity, grazing incidence small-angle X-ray scattering, atomic force microscopy, contact angle measurements, and Raman spectroscopy. Their GI-SAXS patterns are characteristic of a 2-D hexagonal structure in which tubular rods of the fluorinated surfactant are packed hexagonally and aligned parallel to the substrate. Reflectivity and contact angle measurements of the as-prepared film indicate that a low-density hydrophilic TiO(2) surface presents to the air.

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Section: Resultsmentioning

confidence: 84%

Section: Resultsmentioning

confidence: 99%

TiO₂ Thin Films Self-Assembled with a Partly Fluorinated Surfactant Template

Henderson

Zimny²,

Blin³

et al. 2009

Langmuir

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“…Researchers doped ions in the sol [16][17] or used certain templates [5,[18][19] to fabricate TiO 2 thin films with various shapes. Using surfactants to induce the growth of TiO 2 particles was another technique in the preparation of shape-controlled TiO 2 , by which lice-like, rod-like, arrow-like, sphere-like, teardrop-like, disk-like, and beehive-like nanoparticles have been prepared [20][21].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of TiO2 films on glass slides by the sol-gel method and their photocatalytic activity

et al. 2009

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Titanium dioxide (TiO 2 ) films with rod-like and sphere-like TiO 2 particles were prepared on glass slides employing the sol-gel method. The shape and size of TiO 2 particles were controlled using different concentrations of sodium dodecylbenzensulfonate (SDBS). By increasing the mole ratio of SDBS, the shape of TiO 2 particles transformed from rod-like to sphere-like. Also, the size of TiO 2 particles became gradually smaller. Then, the size became bigger when an excess amount of SDBS was added. The films were mainly composed of anatase titania and the relative content of anatase increased with the increasing amount of SDBS. The photocatalytic activity of the TiO 2 films that were added with SDBS was higher than that without SDBS. When the concentration of SDBS was 8.0 at%, the sample exhibited the best photocatalytic activity.

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“…Films can be formed easily by the sol-gel method. [1][2][3] In particular, uniform films can be formed at low temperature. 4 The process used to form the porous film is the liquid crystal templating mechanism.…”

Section: Introductionmentioning

confidence: 99%

“…using the sol-gel method, a process which was described in detail in Refs. [1,3,[14][15][16]. The synthesis condition is as follows.…”

Section: Introductionmentioning

confidence: 99%

Frictional Characteristics of Nano-Scale Mesoporous SiO2 Thin Film Formed by Sol-Gel and Self-Assembly Method

Lee

Shin²,

Kim³

et al. 2009

jnn

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The pores on the surface function as an outlet for wear particles and enhance the storage of lubricants, which improves lubrication effectiveness. Mesoporous SiO 2 thin films were formed by the sol-gel and self-assembly methods to have a porous structure. One of the important issues in the manufacturing of the films involves the control of the porous structure to ensure proper mechanical properties. Mesoporous materials were manufactured with two surfactants, Pluronid Polyol (F127) and Cetyltrimethylammonium Bromide (CTABr). The pores were then exposed on the surface by chemical mechanical polishing (CMP) and plasma-etching. Ball-on-disk tests with mesoporous SiO 2 thin films on glass specimens were conducted. The results show that the friction coefficient and wear volume of a specimen with F127, which has a 8 nm pore size, are far lower than those of CTABr, which has a 3 nm pore size at both the dry condition and at boundary lubricated condition. This proves a significant dependency of friction and wear on pore size of mesoporous SiO 2 thin films.

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Development of novel surfactant-templated nanostructured thin SiO2, and SiO2–TiO2 films

Cited by 7 publications

References 23 publications

TiO₂ Thin Films Self-Assembled with a Partly Fluorinated Surfactant Template

TiO₂ Thin Films Self-Assembled with a Partly Fluorinated Surfactant Template

Synthesis of TiO2 films on glass slides by the sol-gel method and their photocatalytic activity

Frictional Characteristics of Nano-Scale Mesoporous SiO2 Thin Film Formed by Sol-Gel and Self-Assembly Method

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Development of novel surfactant-templated nanostructured thin SiO2, and SiO2–TiO2 films

Cited by 7 publications

References 23 publications

TiO2 Thin Films Self-Assembled with a Partly Fluorinated Surfactant Template

TiO2 Thin Films Self-Assembled with a Partly Fluorinated Surfactant Template

Synthesis of TiO2 films on glass slides by the sol-gel method and their photocatalytic activity

Frictional Characteristics of Nano-Scale Mesoporous SiO2 Thin Film Formed by Sol-Gel and Self-Assembly Method

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Product

Resources

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TiO₂ Thin Films Self-Assembled with a Partly Fluorinated Surfactant Template

TiO₂ Thin Films Self-Assembled with a Partly Fluorinated Surfactant Template