The Optical and Crystallite Characterization of Bilayer TiO<sub>2</sub> Films Coated on Different ITO layers

Kutlu, Nermin; Oturak, Halil

doi:10.1515/chem-2018-0135

Cited by 5 publications

(3 citation statements)

References 39 publications

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“…[ 34–37 ] In brief, the loaded FeS 2 (lower valence) will interact with higher valence parent cations of TiO 2 NTs intrinsically generate oxygen vacancies, which alter the overall symmetry of FeS 2 @TiO 2 NTs, resulting in the variation of Raman peaks position as well as intensities (Figure 4). [ 51 ] As the loading amount of FeS 2 is increased, the TiO 2 NTs' peak intensities increased due to the homogeneous loading and uniform distribution of FeS 2 . Compared to pure‐TiO 2 NTs, 05‐FeS 2 @TiO 2 NTs, and 10‐FeS 2 @TiO 2 NTs, the high‐intensity peaks were seen for 15‐FeS 2 @TiO 2 NTs and 20‐FeS 2 @TiO 2 NTs.…”

Section: Resultsmentioning

confidence: 99%

Pyrite (FeS₂)‐decorated 1D TiO₂ nanotubes in a bilayer as a sustainable photoanode for photoelectrochemical water splitting activity

Alam

Zahid

2023

J Chinese Chemical Soc

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Herein, FeS 2 @TiO 2 nanotubes photocatalyst was prepared by electrochemical anodization method followed by successive ionic layer adsorption and reaction method, and then finally annealed in a tube furnace for homogenous crystallization. The surface morphology, elemental composition, optical properties, and crystalline structure of the prepared FeS 2 @TiO 2 nanocomposite were found out by performing scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction, UV-Vis diffuse reflectance spectroscopy, and fluorescence spectroscopy, respectively, while bonds vibrations and various functional groups' presence were analyzed using Raman and Fourier transform infrared spectroscopy. A higher photocurrent density of 1.59 mA/cm 2 at 0.3 V versus reference electrode of Ag/AgCl (1.23 V versus reversible hydrogen electrode) using 100 mW/cm 2 intensive light source was shown by 15-FeS 2 @TiO 2 nanotubes (uniformly loaded photoanode) while donor density (N D ) of 3.68 Â 10 À13 cm À3 as compared to pure TiO 2 NTs (0.09 mA/cm 2 ), 05-FeS 2 @TiO 2 NTs (0.19 mA/cm 2 ), 10-FeS 2 @TiO 2 NTs (0.53 mA/cm 2 ) and 20-FeS 2 @TiO 2 NTs (0.61 mA/cm 2 ), respectively. The exceptional photoelectrochemical activity results were attributed to the homogenous integration of FeS 2 that not only increase the charge separation but also, intensively interacted with the substrate (TiO 2 nanotubes), which results in an excellent photoelectrochemical activity.

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Section: Resultsmentioning

confidence: 99%

Pyrite (FeS₂)‐decorated 1D TiO₂ nanotubes in a bilayer as a sustainable photoanode for photoelectrochemical water splitting activity

Alam

Zahid

2023

J Chinese Chemical Soc

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“…By increasing TiO 2 wettability, the photocatalyst concentration increases and the number of electron–hole pairs increases because of (i) the absorption of energy from APPJ photons due to the incident light of the non-thermal jet, (ii) APPJ photons overcome the bandgap of TiO 2 , leading to the generation of more active substances that can be absorbed by the cells and cause acceleration of the sterilization efficiency [ 41 , 42 , 43 ]. There are various other reactions arising from light being absorbed by TiO 2 in addition to the reactions mentioned before (Equations (4)–(10)): TiO 2 + hv → (e cb + h vb ) (TiO 2 ) Ti 4+ + e cb → Ti 3+

where e cb is a conduction band electron, h vb is a valence band hole, and Ti 2+ , Ti 3+ , and Ti 4+ are titanium oxidation states.…”

Section: Resultsmentioning

confidence: 99%

Non-Thermal Plasma Treatment Coupled with a Photocatalyst for Antimicrobial Performance of Ihram Cotton Fabric

Galaly

Dawood

2022

Nanomaterials

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All Muslim pilgrims must wear Ihram clothes during the Hajj and Umrah seasons, which presents a great challenge regarding how to eliminate the spread of microbes attached to the cotton fabric of Ihram from the surrounding environment. Targeted fashion research of the recent past presents a new industrial treatment, which has led us to study the impact of heat directed from an atmospheric pressure plasma jet (APPJ), coupled with photocatalytic nanomaterials, for the antibacterial treatment of Escherichia coli (E. coli) attached to cotton fabric samples, to improve pollutant remediation. The average rates of heat transfer to the bacterial colonies attached to cotton fabric samples, as a function of the laminar mode, were 230 and 77 mW for dry and wet argon discharges, respectively. The jet temperatures (TJ) and heat transfer (QH) decreased more for wet argon discharge than for dry argon discharge. This is because, due to the wettability by TiO2 photocatalyst concentration dosage increases from 0 to 0.5 g L−1, a proportion of the energy from the APPJ photons is expended in overcoming the bandgap of TiO2 and is used in the creation of electron–hole pairs. In the Weibull deactivation function used for the investigation of the antibacterial treatment of E. coli microbes attached to cotton fabric samples, the deactivation kinetic rate of E. coli increased from 0.0065 to 0.0152 min−1 as the TiO2 precursor concentration increased. This means that the sterilization rate increased despite (TJ) and (QH) decreasing as the wettability by TiO2 photocatalyst increases. This may be due to photocatalytic disinfection and the generation of active substances, in addition to the effect of the incident plume of the non-thermal jet.

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“…Literature [28], reported that A-TiO 2 (1 0 1) served as the most stable system. According to the research report, the bilayer TiO 2 film can be realized in the experiment [29]. Therefore, pure bilayers with 72 atoms of R-TiO 2 (1 1 0) model or A-TiO 2 (1 0 1) model were constructed with a 15-Å thick vacuum layer to evade the interaction of neighboring 2D-TiO 2 monolayers in the z-axis direction.…”

Section: Model Constructionmentioning

confidence: 99%

Effects of intrinsic point defects (Ti_i-Vo) on the photocatalytic performance of bilayer rutile/anatase TiO₂

Wang,

Hou

2024

Phys. Scr.

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Despite the progress on the photocatalytic performance of TiO2 as a typical photocatalytic material, previous research has overlooked the systematic study of the coexistence of Tii and Vo on the photocatalytic property of rutile or anatase TiO2 with bilayers. Studies on the comparative photocatalytic property of these materials have been rarely reported. Thus, the influences of point defects (Tii-Vo) on the photocatalytic performance of bilayer rutile or anatase TiO2 were investigated by GGA + U calculations under density general function theory framework. Results showed that the bilayer rutile Ti24TiiO47 (1 1 0) system exhibited the highest relative stability, strong carrier activity, reduced carrier recombination, and the longest lifetime. Furthermore, the absorption spectrum is clearly red shifted. This system is beneficial for the dissociation of water to produce H2 and O2. This research provides certain theoretical reference value on the design and fabrication of novel bilayer rutile TiO2(1 1 0) surface photocatalysts.

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The Optical and Crystallite Characterization of Bilayer TiO₂ Films Coated on Different ITO layers

Cited by 5 publications

References 39 publications

Pyrite (FeS₂)‐decorated 1D TiO₂ nanotubes in a bilayer as a sustainable photoanode for photoelectrochemical water splitting activity

Pyrite (FeS₂)‐decorated 1D TiO₂ nanotubes in a bilayer as a sustainable photoanode for photoelectrochemical water splitting activity

Non-Thermal Plasma Treatment Coupled with a Photocatalyst for Antimicrobial Performance of Ihram Cotton Fabric

Effects of intrinsic point defects (Ti_i-Vo) on the photocatalytic performance of bilayer rutile/anatase TiO₂

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The Optical and Crystallite Characterization of Bilayer TiO2 Films Coated on Different ITO layers

Cited by 5 publications

References 39 publications

Pyrite (FeS2)‐decorated 1D TiO2 nanotubes in a bilayer as a sustainable photoanode for photoelectrochemical water splitting activity

Pyrite (FeS2)‐decorated 1D TiO2 nanotubes in a bilayer as a sustainable photoanode for photoelectrochemical water splitting activity

Non-Thermal Plasma Treatment Coupled with a Photocatalyst for Antimicrobial Performance of Ihram Cotton Fabric

Effects of intrinsic point defects (Tii-Vo) on the photocatalytic performance of bilayer rutile/anatase TiO2

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The Optical and Crystallite Characterization of Bilayer TiO₂ Films Coated on Different ITO layers

Pyrite (FeS₂)‐decorated 1D TiO₂ nanotubes in a bilayer as a sustainable photoanode for photoelectrochemical water splitting activity

Pyrite (FeS₂)‐decorated 1D TiO₂ nanotubes in a bilayer as a sustainable photoanode for photoelectrochemical water splitting activity

Effects of intrinsic point defects (Ti_i-Vo) on the photocatalytic performance of bilayer rutile/anatase TiO₂