Kartal, Uğur

Profile URL
https://hdl.handle.net/11147/16528
Name Variants
Job Title
Email Address
Main Affiliation
03.09. Department of Materials Science and Engineering
Status
External
Website
ORCID ID
0000-0002-5557-2300
Scopus Author ID
57279669400
Turkish CoHE Profile ID
Google Scholar ID
WoS Researcher ID
HHZ-2561-2022

Sustainable Development Goals

NO POVERTY1
NO POVERTY
0
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ZERO HUNGER2
ZERO HUNGER
0
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GOOD HEALTH AND WELL-BEING3
GOOD HEALTH AND WELL-BEING
0
Research Products
QUALITY EDUCATION4
QUALITY EDUCATION
0
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GENDER EQUALITY5
GENDER EQUALITY
0
Research Products
CLEAN WATER AND SANITATION6
CLEAN WATER AND SANITATION
1
Research Products
AFFORDABLE AND CLEAN ENERGY7
AFFORDABLE AND CLEAN ENERGY
0
Research Products
DECENT WORK AND ECONOMIC GROWTH8
DECENT WORK AND ECONOMIC GROWTH
0
Research Products
INDUSTRY, INNOVATION AND INFRASTRUCTURE9
INDUSTRY, INNOVATION AND INFRASTRUCTURE
0
Research Products
REDUCED INEQUALITIES10
REDUCED INEQUALITIES
0
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SUSTAINABLE CITIES AND COMMUNITIES11
SUSTAINABLE CITIES AND COMMUNITIES
0
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RESPONSIBLE CONSUMPTION AND PRODUCTION12
RESPONSIBLE CONSUMPTION AND PRODUCTION
0
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CLIMATE ACTION13
CLIMATE ACTION
0
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LIFE BELOW WATER14
LIFE BELOW WATER
0
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LIFE ON LAND15
LIFE ON LAND
0
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PEACE, JUSTICE AND STRONG INSTITUTIONS16
PEACE, JUSTICE AND STRONG INSTITUTIONS
0
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PARTNERSHIPS FOR THE GOALS17
PARTNERSHIPS FOR THE GOALS
0
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Publication Collaboration

Affiliation Name Count
Dokuz Eylül University 12
Izmir Institute of Technology 10
Kocaeli Üniversitesi 5
Izmir Kâtip Çelebi University 2
Dokuz Eylül Üniversitesi Hastanesi 2
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Data obtained from OpenAlex
Scholarly Output

11

Articles

11

Views / Downloads

4842/748

Supervised MSc Theses

0

Supervised PhD Theses

0

WoS Citation Count

61

Scopus Citation Count

66

Patents

0

Projects

0

WoS Citations per Publication

5.55

Scopus Citations per Publication

6.00

Open Access Source

3

Supervised Theses

0

JournalCount
Solid State Sciences2
Ceramics International1
Dokuz Eylül Üniversitesi Mühendislik Fakültesi Fen ve Mühendislik Dergisi1
Journal of Inorganic and Organometallic Polymers and Materials1
Journal of Materials Science: Materials in Electronics1
Current Page: 1 / 2

Scopus Quartile Distribution

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Author of Publication: search.filters.isAuthorOfPublication.1670e899-62cb-437e-ab8e-8d6403e3dc00

Scholarly Output Search Results

Now showing 1 - 10 of 11
  • Article
    Citation - WoS: 3
    Citation - Scopus: 4
    A Facile Method for Boosting the Graphitic Carbon Nitride's Photocatalytic Activity Based on 0d/2d S-Scheme Heterojunction Nanocomposite Architecture
    (Elsevier, 2024) Kartal, Uğur; Kahraman, Zeynep; Genç, Aziz; Alp, Emre; 03.09. Department of Materials Science and Engineering; 04.04. Department of Photonics; 03. Faculty of Engineering; 04. Faculty of Science; 01. Izmir Institute of Technology
    Graphitic carbon nitride (g-C 3 N 4 ) has received significant interest as a metal -free photocatalyst. The S -scheme photocatalytic system has great potential to improve the charge separation in semiconductor photocatalysts. In this study, we have fabricated non-toxic and low-cost photocatalytic nanocomposites of 0D/2D S -scheme heterojunction composed of iron oxide and graphitic carbon nitride by a facile method. The developed facile method provides a sustainable way with a high atom economy to further enhance the photocatalytic performance of exfoliated g-C 3 N 4 . The 0D -iron oxide/2D-C 3 N 4 exhibited nearly 10 times better than bulk g-C 3 N 4 and almost 60 % better than exfoliated g-C 3 N 4 under simulated solar light irradiation. The experimental results demonstrated that the effective charge -carrier mechanism led to an improved generation of reactive oxygen species (ROSs), resulting in an impressive photocatalytic performance. A serial photocatalytic test was also conducted to understand photocatalytic reaction mechanisms with various scavengers.
  • Article
    Citation - WoS: 1
    Citation - Scopus: 1
    Enhanced Properties of Tio<sub>2</Sub> Nanotubes Through Α-fe<sub>2</Sub>o<sub>3< Surface Decoration: Synthesis, Characterization, and Performance Evaluation
    (Elsevier Sci Ltd, 2024) Kartal, Uğur; Kartal, Ugur; Uzunbayir, Begum; Erol, Mustafa; Yurddaskal, Metin; Pulat, Gunnur; Guler, Saadet; 01. Izmir Institute of Technology; 03.09. Department of Materials Science and Engineering; 03. Faculty of Engineering
    Electrochemical anodization, under a constant voltage of 45 V and for 15, 30, and 45 min, was performed to fabricate highly ordered TiO2 nanotubes. Depending on the processing paramters, the diameter of the TiO2 nanotubes was found to be around 95 +/- 6 nm, while the thickness of TNT layer exhibited a change with anodizing time, varying from 1 to 4 mu m. Subsequent to the anodization alpha-Fe2O3/TiO2 heterogeneous structure was created by the spin coating of iron precursor based solutions on TiO2 nanotubes. X-ray diffraction (XRD) and scanning electron microscopy (SEM) analysis were utilized to ascertain the phase structure and morphology of TiO2 nanotubes. The change of optical band gap values depending on the processing parameters was calculated using UV-Vis spectrophotometer data. The photocatalytic performances of the samples, namely the degradation rates and kinetics, were evaluated by examining the photodegradation of methylene blue (MB). The (TC15) sample, obtained by anodizing for 15 min and decorated with alpha-Fe2O3, exhibited the highest photocatalytic activity, with a degradation efficiency of 70 % at the end of 7 h of light exposure. On the other hand, the inhibition percentages of bacterial growth were examined and it was seen that the TC30 sample with the highest value was 88.89 % for E.coli bacteria and 70.57 % for S.aureus. To assess the mechanism of antimicrobial activity, ROS (Reactive Oxygen Species) Analysis were perfomed on T30 and TC30 groups and the ROS amount of TC30 was higher than T30. According to the results of the L929 mouse fibroblast cytotoxicity experiment with indirect contact according to ISO 10993-5 standards, all samples showed a successful performance in terms of cell viability. The cell viability of TC15 was higher in comparison to the control group.
  • Article
    Sandwich-Structured Coating for Ultraviolet Protection and Thermal Management Applications
    (American Chemical Society, 2025) Kartal, Uğur; Yurddaskal, M.; 01. Izmir Institute of Technology; 03.09. Department of Materials Science and Engineering; 03. Faculty of Engineering
    During the day, exposure to UV radiation poses risks to human health, while managing heat exchange is important for comfort in protective textiles. Recently, infrared-reflective materials have attracted attention, particularly for reducing the infrared transmission and moderating the thermal emission. In this study, titanium dioxide/copper–aluminum/titanium dioxide (TiO<inf>2</inf>/Cu–Al/TiO<inf>2</inf>, TCAT) sandwich-structured coatings were deposited on polyester fabric using magnetron sputtering. Deposition times (40 and 90 s) were varied to adjust Al and Cu layer thicknesses between 20 and 55 nm, and the resulting films were characterized by X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy, UV–vis spectroscopy, and thermal imaging. The coatings retained moderate visible transmittance on glass, whereas on woven polyester fabric, they formed an optically dense barrier with near-zero UV transmittance, suppressing light penetration across the visible to near-infrared (VIS–NIR) range. In conjunction with the emissivity-aware interpretation of thermography, these results substantiate substrate-independent UV shielding and optical/thermal barrier behavior of the TCAT multilayer. Thermal imaging qualitatively indicated reduced apparent surface temperature for coated fabrics compared to uncoated ones, suggesting partial thermal shielding. These results demonstrate the feasibility of integrating multifunctional coatings into daily-use polyester textiles, offering effective UV protection and the potential for thermal management in protective applications. © 2025 The Authors. Published by American Chemical Society
  • Article
    Ito Yüzeylerinde Elektrodepozitlenen ZnO Nanoyapılar: Kolesterol Biyosensör Uygulamaları için Etkinliklerinin Araştırılması
    (2024) Kartal, Uğur; Yurddaskal, Metin; Erol, Mustafa; Aykac, Ahmet; Kartal, Uğur; Özdemir, Erdem Tevfik; Uzunbayır, Begüm; 03.09. Department of Materials Science and Engineering; 03. Faculty of Engineering; 01. Izmir Institute of Technology
    Bu çalışmada, ZnO nanoyapıları, kolesterol tespiti için ITO/cam altlıklar üzerine elektrodepozitlenen Zn'nin elektrokimyasal anodizasyonu ile hazırlanmıştır. Geliştirilen ZnO nanoyapıların Kolesterol oksidaz (ChOx) enziminin tespitindeki etkinliği döngüsel voltametri yöntemi ile belirlenmiştir. XRD ve SEM sonuçları, çeşitli parametrelerle anodizasyon yöntemiyle hazırlanan ZnO nanoyapıların sentezini doğrulamıştır. Elektrodepozisyon ve anodizasyon süresinin morfoloji üzerindeki etkisi gözlemlenmiştir. ZnO/Zn/ITO/cam ve Pt/ZnO/Zn/ITO/cam elektrotların çeşitli kolesterol konsantrasyonlarına sahip elektrolitlerdeki döngüsel voltametrisi gerçekleştirilmiştir. Elde edilen Pt/ZnO/Zn/ITO/cam yapılı elektrotun tespit limiti 0,965x10-3M olarak hesaplanmıştır. Elde edilen katmanlı yapıya sahip malzeme, biyomedikal uygulamalarda elektrokimyasal sensörlerde ve biyosensörlerde potansiyel uygulamalara sahip olabilir. Bu çalışma, biyosensör performansına ek olarak, ZnO tabanlı biyosensörlerin geliştirilmesi için pahalı altyapı ve hammadde maliyeti gerektirmeyen yeni bir yaklaşım önermekte ve gelecek çalışmalarda yapılacak iyileştirmelerle daha düşük tespit limitlerine sahip yüksek hassasiyetli biyosensör elektrotlarının geliştirilmesini mümkün kılmaktadır.
  • Article
    Citation - WoS: 30
    Energy Harvesting Nanogenerators: Electrospun Β-Pvdf Nanofibers Accompanying Zno Nps and Zno@ag Nps
    (Elsevier, 2021) Zeyrek Ongun, Merve; Kartal, Uğur; Oğuzlar, Sibel; Kartal, Uğur; Yurddaşkal, Metin; Cihanbeğendi, Özge; Zeyrek Ongun, Merve; Oğuzlar, Sibel; Kartal, Uğur; Yurddaşkal, Metin; Cihanbeğendi, Özge; 03.09. Department of Materials Science and Engineering; 03. Faculty of Engineering; 01. Izmir Institute of Technology
    This paper aims to demonstrate that synthesized nano-scale zinc oxide (ZnO) and different concentrations (1, 3 and 5 wt%) of silver-doped zinc oxide (ZnO@Ag) nanoparticles (NPs), which were employed to enhance the piezoelectric content of the electrospun β-phase poly (vinylidene fluoride) PVDF nanofibers, may be an alternative for usual semiconductor dopant. The structural and morphological properties of all the synthesized materials were investigated. The impedance and the capacitance values of the manufactured nanogenerators were also investigated at room temperature. The peak-to-peak amplitude output voltage data of ZnO NPs and ZnO@Ag NPs doped PVDF-based electrospun nanomats were measured using digital oscilloscope while a finger-tapping action at a frequency of ∼1 Hz was conducted. The electrical output of 5 wt% Ag-doped ZnO-based β-PVDF nanofibers increased from 0.5 to 1.5 V compared to undoped β-PVDF samples. These findings have a wide range of auspicious applications, including energy harvesting devices, portable electronic systems, and self-powered electrical gadgets that can be worn.
  • Article
    Citation - WoS: 4
    Citation - Scopus: 5
    The Effect of Geometrical Characteristics of Tio2 Nanotube Arrays on the Photocatalytic Degradation of Organic Pollutants
    (Springer, 2023) Kartal, Uğur; Kartal, Uğur; Uzunbayır, Begüm; Doluel, Eyyüp Can; Yurddaşkal, Metin; Erol, Mustafa; 03.09. Department of Materials Science and Engineering; 03. Faculty of Engineering; 01. Izmir Institute of Technology
    Highly ordered TiO2 nanotube arrays (TNAs) were fabricated by electrochemical anodization under varying durations and voltages. The effects of the anodizing parameters on geometrical properties were investigated. The results showed that as the anodizing time increased from 15 to 45 min, the length of the nanotubes increased, but there was no change in their diameter, hence the surface area increased while the open porosity did not change. When the effect of the anodizing voltage was examined, it was observed that both the length and diameter increased as the voltage increased from 15 to 45 V. Thus, a significant increase in open porosity and surface area was observed. The UV-Vis spectrophotometer was used to evaluate the effects of all geometrical characteristics on the photodegradation of methylene blue (MB). The results showed that the anodizing parameters were highly effective on the photocatalytic degradation of MB. With the decrease of the anodizing voltage, the photocatalytic activity increased because of the geometrical characteristics of TNAs. Accordingly, TNAs with the surface area of 25 m(2)/g and the open porosity of 35% obtained by anodizing for 45 min at 15 V showed the highest photocatalytic activity with a degradation efficiency of similar to 81% in 7 h.
  • Article
    Citation - Scopus: 32
    Energy Harvesting Nanogenerators: Electrospun Β-Pvdf Nanofibers Accompanying Zno Nps and Zno@ag Nps
    (Elsevier Masson s.r.l., 2021) Kartal, Uğur; Oguzlar,S.; Kartal,U.; Yurddaskal,M.; Cihanbegendi,O.; 01. Izmir Institute of Technology; 03.09. Department of Materials Science and Engineering; 03. Faculty of Engineering
    This paper aims to demonstrate that synthesized nano-scale zinc oxide (ZnO) and different concentrations (1, 3 and 5 wt%) of silver-doped zinc oxide (ZnO@Ag) nanoparticles (NPs), which were employed to enhance the piezoelectric content of the electrospun β-phase poly (vinylidene fluoride) PVDF nanofibers, may be an alternative for usual semiconductor dopant. The structural and morphological properties of all the synthesized materials were investigated. The impedance and the capacitance values of the manufactured nanogenerators were also investigated at room temperature. The peak-to-peak amplitude output voltage data of ZnO NPs and ZnO@Ag NPs doped PVDF-based electrospun nanomats were measured using digital oscilloscope while a finger-tapping action at a frequency of ∼1 Hz was conducted. The electrical output of 5 wt% Ag-doped ZnO-based β-PVDF nanofibers increased from 0.5 to 1.5 V compared to undoped β-PVDF samples. These findings have a wide range of auspicious applications, including energy harvesting devices, portable electronic systems, and self-powered electrical gadgets that can be worn. © 2021 Elsevier Masson SAS
  • Article
    Citation - WoS: 5
    Citation - Scopus: 6
    Formation of Monolithic Srtio3-Tio2 Ceramic Heterostructures by Reactive Hydrothermal Sintering
    (Elsevier, 2023) Karacasulu, Levent; Kartal, Uğur; Ahmetoğlu, Çekdar Vakıf; Bortolotti, Mauro; Biesuz, Mattia; Kartal, Uğur; Karacasulu, Levent; 03.09. Department of Materials Science and Engineering; 01.01. Units Affiliated to the Rectorate; 01. Izmir Institute of Technology; 03. Faculty of Engineering
    In a one-pot approach, monolithic SrTiO3-TiO2 ceramic heterostructures were obtained using the reactive hydrothermal liquid phase densification (rHLPD). Structural, morphological, and photocatalytic properties of the obtained ceramics were analyzed. The relative density of the formed components reached about 80% with reaction time, temperature, and NaOH concentration variation. It was observed via Rietveld refinement that there was no XRD detectable phase other than TiO2 and SrTiO3 in the final structure. The monolithic SrTiO3-TiO2 ceramics obtained by hydrothermal reaction at 120 °C for 24 h in 1 M NaOH concentration showed a dielectric constant being around 500, and the dielectric loss was below 0.25 at frequencies higher than 10 kHz. The SrTiO3-TiO2 heterostructured monoliths having only 20 vol% total porosity and low specific surface area, demonstrated ∼60% efficiency (in 5 h) in degrading Methylene Blue photo-catalytically. © 2023 Elsevier Ltd
  • Article
    Citation - WoS: 1
    Citation - Scopus: 2
    Preparation and Photocatalytic Performances of Zno Nanostructures: Effects of Anodization Voltage and Time
    (Wiley, 2022) Öksüz, Ahmet Emrecan; Kartal, Uğur; Doluel, Eyyup Can; Kartal, Uğur; Dikici, Tuncay; 03.09. Department of Materials Science and Engineering; 03. Faculty of Engineering; 01. Izmir Institute of Technology
    In this study, ZnO nanostructures with different morphologies were produced by varying anodizing parameters (time and voltage), and the photocatalytic activities of these structures were examined. ZnO nanostructures were fabricated through different voltage and duration consisting of nine samples with KHCO3 solution as an electrolyte. The produced ZnO nanostructures were investigated by using X-ray diffraction (XRD), scanning electron microscopy, X-ray photoelectron spectroscopy, and UV–vis spectrophotometer. It was found that the morphology of ZnO was formed as nanosponge, nanoflower, nanowire, heterogeneous structures. ZnO nanostructures were identified by matching XRD peaks due to the ICDD database. Experiments on photocatalytic degradation of methylene blue demonstrated the photocatalytic activity of ZnO samples. The best photocatalytic performance of the samples was observed by S1 sample, which was anodized for 30 min in 0.05 M of KHCO3 electrolyte at 20 V, after 420 min exposure of the UV–vis light source with the degradation rate of 87.3%. Such ZnO nanostructures exhibit unique properties and have high potential for wastewater treatment.
  • Article
    Citation - WoS: 9
    Citation - Scopus: 9
    Zno Nanostructures for Photocatalytic Degradation of Methylene Blue: Effect of Different Anodization Parameters
    (Springer, 2022) Öksüz, Ahmet Emrecan; Kartal, Uğur; Kartal, Uğur; Dikici, Tuncay; Erol, Mustafa; 03.09. Department of Materials Science and Engineering; 03. Faculty of Engineering; 01. Izmir Institute of Technology
    In this paper, the photocatalytic activity of ZnO nanostructures formed by anodization method with different parameters was investigated. The synthesis of ZnO nanostructures with different morphology by varying anodic oxidation parameters containing electrolytes, molarity, voltage, and duration was analyzed. ZnO nanostructures were prepared through different parameters consisting of six samples. The produced ZnO nanostructures were investigated by using X-ray diffraction, scanning electron microscopy, diffuse reflectance spectroscopy, and UV-Vis spectrophotometer. It was found that the morphology of ZnO structures was formed as nanorods, needle-like, flower-like, heterogeneous, and homogeneous of mixed structures. ZnO nanostructures were identified by matching X-Ray diffraction peaks due to the international center for diffraction data database. Experiments on photocatalytic degradation of methylene blue demonstrated that the photocatalytic activity of ZnO samples. The best photocatalytic performance was observed by the sample anodized for an hour in 0.05 M of KHCO3 electrolytes with 40 V electrical potential. It was observed that the removal of methylene blue increased 3 times (photocatalytic degradation efficiency similar to 31% for methylene blue vs similar to 90% by the best sample) thanks to the obtained ZnO nanostructured photocatalysts. The results showed that an increment of the voltage has a significant effect on the photocatalytic activity of ZnO while keeping other parameters including molarity, time, and electrolyte type constant.