The effect of thickness on surface structure of rf sputtered TiO2 thin films by XPS, SEM/EDS, AFM and SAM

Güzelçimen, Feyza; Bilen, Bükem; Çetinkaya, Çağlar; Kaya, Meltem Dönmez; Efkere, Halil İbrahim; Özen, Yunus; Bingöl, Doğukan; Sirkeci, Merve; Kınacı, Barış; Ünlü, Mehmet; Özçelik, Süleyman

doi:10.1016/j.vacuum.2020.109766

Cited by 81 publications

(30 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The values in this table reveal that, the appearance of surface, in all cases, is similar and quite homogeneous, having a roughness which seems to be independent of the layer thickness. It means that this method of fabrication would allow using even thicker layers without a modification in the surface roughness, which is an important factor that influences the physical behaviour of TiO 2 -based thin films [ 57 ].…”

Section: Resultsmentioning

confidence: 99%

Fe3O4-TiO2 Thin Films in Solar Photocatalytic Processes

et al. 2022

View full text Add to dashboard Cite

The optical properties of 5wt% Fe3O4-TiO2 thin films were evaluated in detail with the aim of proposing a mechanism for solar photocatalytic processes and highlighting the advantages over the use of bare TiO2. The results showed that the incorporation of 5wt% Fe3O4 enhanced the optical properties by a redshift to a wavelength in the visible range, reducing the anatase/rutile band gap energy from 3.2 eV to 2.8 eV. Photoluminescence studies reveal a superior separation efficiency of photoexcited electron-hole pairs when Fe3O4 nanoparticles (NPs) are present in the photocatalyst. X-ray photoelectron spectroscopy spectra confirm the presence of Fe3O4 and existence of a chemical bonding between TiO2 and Fe3O4 NPs. Moreover, in this study, a mechanism of solar photocatalytic processes involving Fe3O4-TiO2 thin films is proposed and it is supported by experimental results. Finally, solar photocatalytic experiments were carried out, indicating that the effectiveness for the removal of the selected pharmaceutical is considerably improved when the composite material is used as catalyst. Furthermore, it was demonstrated that the photocatalytic activity of the prepared Fe3O4-TiO2 thin films depends on their thickness, achieving the highest pharmaceutical removal yields using the 2 µm thick sample. The stability and reusability of the catalyst was confirmed studying the photocatalytic activity over three cycles.

show abstract

Section: Resultsmentioning

confidence: 99%

Fe3O4-TiO2 Thin Films in Solar Photocatalytic Processes

et al. 2022

View full text Add to dashboard Cite

show abstract

“…The energy difference (spin–orbit splitting) between these peaks is 5.7 eV, which is in good agreement with the TiO 2 nanoparticles' standard value. 31–33 In Fig. 2C, the XPS spectra of O 1s were split into two peaks at 529.5 eV and 531.2 eV, corresponding to Ti–O–Ti and Ti–O–H, respectively.…”

Section: Resultsmentioning

confidence: 99%

A Cd_xZn_1−xS/TiO₂ nanotube array electrode for a highly sensitive and selective nonenzymatic photoelectrochemical glucose sensor

2022

View full text Add to dashboard Cite

show abstract

“…The structure of the carbon skeleton is demonstrated by the bond between C–C/C–H with the energy of 284.78 eV. Except for the substrate grown catalyst, a little of the signals of adjacent to the C1s peak maybe comes from carbon contamination as the sample exposing to air [ 29 ].…”

Section: Resultsmentioning

confidence: 99%

A Cellulose-Type Carrier for Intimate Coupling Photocatalysis and Biodegradation

et al. 2022

View full text Add to dashboard Cite

Intimate coupling photocatalysis and biodegradation treatment technology is an emerging technology in the treatment of refractory organic matter, and the carrier plays an important role in this technology. In this paper, sugarcane cellulose was used as the basic skeleton, absorbent cotton was used as a reinforcing agent, anhydrous sodium sulfate was used as a pore-forming agent to prepare a cellulose porous support with good photocatalytic performance, and nano-TiO2 was loaded onto it by a low-temperature bonding method. The results showed that the optimal preparation conditions of cellulose carriers were: cellulose mass fraction 1.0%; absorbent cotton 0.6 g; and Na2SO4 60 g. The SEM, EDS and XPS characterization further indicated that the nano-TiO2 was uniformly loaded onto the cellulose support. The degradation experiments of Rhodamine B showed that the nano-TiO2-loaded composite supports had good photocatalytic performance. The degradation rate of 1,2,4-trichlorobenzene was more than 92% after 6 cycles, and the experiment of adhering a large number of microorganisms on the carriers before and after the reaction showed that the cellulose-based carriers obtained the required photocatalytic performance and stability, which is a good cellulose porous carrier.

show abstract

The effect of thickness on surface structure of rf sputtered TiO2 thin films by XPS, SEM/EDS, AFM and SAM

Cited by 81 publications

References 55 publications

Fe3O4-TiO2 Thin Films in Solar Photocatalytic Processes

Fe3O4-TiO2 Thin Films in Solar Photocatalytic Processes

A Cd_xZn_1−xS/TiO₂ nanotube array electrode for a highly sensitive and selective nonenzymatic photoelectrochemical glucose sensor

A Cellulose-Type Carrier for Intimate Coupling Photocatalysis and Biodegradation

Contact Info

Product

Resources

About

The effect of thickness on surface structure of rf sputtered TiO2 thin films by XPS, SEM/EDS, AFM and SAM

Cited by 81 publications

References 55 publications

Fe3O4-TiO2 Thin Films in Solar Photocatalytic Processes

Fe3O4-TiO2 Thin Films in Solar Photocatalytic Processes

A CdxZn1−xS/TiO2 nanotube array electrode for a highly sensitive and selective nonenzymatic photoelectrochemical glucose sensor

A Cellulose-Type Carrier for Intimate Coupling Photocatalysis and Biodegradation

Contact Info

Product

Resources

About

A Cd_xZn_1−xS/TiO₂ nanotube array electrode for a highly sensitive and selective nonenzymatic photoelectrochemical glucose sensor