Influence of ion beam current on the structural, optical, and mechanical properties of TiO₂ coatings: ion beam-assisted vs conventional electron beam evaporation

• Agata Obstarczyk and
• Urszula Wawrzaszek

Beilstein J. Nanotechnol. 2025, 16, 1097–1112, doi:10.3762/bjnano.16.81

• , adhesive, and durable TiO2 coatings with improved optical and mechanical properties, suitable for applications requiring enhanced wear resistance. Keywords: electron beam evaporation; ion beam-assisted deposition; mechanical properties; nanocrystalline anatase; optical properties; TiO2 coatings

• h in ambient atmosphere with a heating ramp of 200 K·h−1, without the use of refrigerants. The effect of ion beam-assisted deposition and additional post-process modification of TiO2 coatings was investigated in detail. XRD measurements (PANalytical Empyrean PIXel3D), Raman spectroscopy (Thermo

• TiO2 coatings (Figure 1). Therefore, post-deposition annealing becomes one of the key pathways in controlling the structure, morphology, and photocatalytic activity of TiO2 films [3]. After post-process annealing, all thin films exhibited peaks related to the (101) and (004) planes of anatase, for

Fast diffusion of silver in TiO₂ nanotube arrays

• Wanggang Zhang,
• Yiming Liu,
• Diaoyu Zhou,
• Hui Wang,
• Wei Liang and
• Fuqian Yang

Beilstein J. Nanotechnol. 2016, 7, 1129–1140, doi:10.3762/bjnano.7.105

• reported by Kulczyk-Malecka et al. [41] for the sandwich structure of TiO2/Ag/TiO2 coatings, and the activation energy is also larger than that given by Kulczyk-Malecka et al. [41]. Such differences reveal the effect of the microstructure on the diffusion behavior of Ag. The TiO2 in TiO2/Ag/TiO2 coatings

• TiO2 nanotubes was analyzed. The diffusivity for the diffusion of Ag atoms on the outmost surface of the TiO2 nanotubes at 400 °C is 6.87 × 10−18 m2/s, which is three orders of magnitude larger than the results reported by Kulczyk-Malecka et al. [41] for the sandwich structure of TiO2/Ag/TiO2 coatings

Effect of SiN_x diffusion barrier thickness on the structural properties and photocatalytic activity of TiO₂ films obtained by sol–gel dip coating and reactive magnetron sputtering

• Mohamed Nawfal Ghazzal,
• Eric Aubry,
• Nouari Chaoui and
• Didier Robert

Beilstein J. Nanotechnol. 2015, 6, 2039–2045, doi:10.3762/bjnano.6.207

• substrate holder that was parallel to the target surface. The SiNx/glass substrates were placed in the same position on the substrate holder (separated from the axis of the target by 50 mm at a fixed angle of 75°) to ensure reproducibility. Using cold deposition, the TiO2 coatings were calcinated at 450 °C

• that the films are about 40 nm thick (Figure 1b). The surface morphology of the annealed TiO2 coatings synthesized on SiNx/SLG substrates by reactive sputtering is presented in Figure 2. The film surface does not show a major difference when the thickness of SiNx barrier increases. The coatings treated

• TiO2 films grown on SiNx/SLG after annealing at 450 °C. (a) XRD patterns and (b) FWHM and the intensity of the (101) plane of the sol–gel TiO2 coatings as a function of the SiNx layer thickness. (a) XRD patterns and (b) FWHM of the (101) and (004) planes and their intensity of the TiO2 coatings as a

Nanostructured, mesoporous Au/TiO₂ model catalysts – structure, stability and catalytic properties

• Matthias Roos,
• Dominique Böcking,
• Kwabena Offeh Gyimah,
• Gabriela Kucerova,
• Joachim Bansmann,
• Johannes Biskupek,
• Ute Kaiser,
• Nicola Hüsing and
• R. Jürgen Behm

Beilstein J. Nanotechnol. 2011, 2, 593–606, doi:10.3762/bjnano.2.63

• , the conversions given in the next section are maximum values; lower values are also possible. Results and Discussion Characterization of TiO2 coatings and Au/TiO2 catalysts The thin-film Au/TiO2 catalysts were prepared by an evaporation-induced self-assembly (EISA) approach, by spin-coating a Si(100

• ). Principle of the SMS measurement on the mesoporous Au/TiO2 film with CO oxidation as a test reaction. The CO2 signal was measured for decreasing sample temperature (blue data) atop the catalytically active layer (1) and the bare Si reference (2). X-ray diffraction patterns obtained for TiO2 coatings treated