Toprak Döşlü, Serap

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https://hdl.handle.net/20.500.12514/6956
Name Variants
Doslu, Serap Toprak
Toprak, Serap
Job Title
Doktor Öğretim Üyesi
Email Address
seraptoprak@artuklu.edu.tr
Main Affiliation
Department of Nutrition and Dietetics/ Beslenme ve Diyetetik Bölümü
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Website
ORCID ID
0000-0002-5455-8179
Scopus Author ID
55241634100
Turkish CoHE Profile ID
247202
Google Scholar ID
WCys77kAAAAJ
WoS Researcher ID
AGQ-1130-2022

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REDUCED INEQUALITIES
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PEACE, JUSTICE AND STRONG INSTITUTIONS
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3

GOOD HEALTH AND WELL-BEING
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17

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NO POVERTY
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DECENT WORK AND ECONOMIC GROWTH
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4

QUALITY EDUCATION
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9

INDUSTRY, INNOVATION AND INFRASTRUCTURE
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14

LIFE BELOW WATER
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CLEAN WATER AND SANITATION
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CLIMATE ACTION
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SUSTAINABLE CITIES AND COMMUNITIES
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RESPONSIBLE CONSUMPTION AND PRODUCTION
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AFFORDABLE AND CLEAN ENERGY
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120

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Scholarly Output

24

Articles

13

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228/1769

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WoS Citation Count

53

Scopus Citation Count

58

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3

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WoS Citations per Publication

2.21

Scopus Citations per Publication

2.42

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21

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JournalCount
International Journal of Hydrogen Energy3
International World Energy Conference-II2
Chemistryopen1
Cumhuriyet Science Journal1
Fırat üniversitesi Mühendislik Bilimleri Dergisi1
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Now showing 1 - 10 of 24
  • Thumbnail Image
    Article
    Investigation of the hydrogen evolution on Ni deposited titanium oxide nano tubes
    (Corrosion Science, 2012) Altunbaş Şahin, Ece; Doğru Mert, Başak; Toprak Döşlü, Serap; Kardaş, Gülfeza
    Titanium oxide nano tubes (TiOx) were prepared by the electrochemical anodizing method from at different process time and different potential in 0.1 M HF solution. Their morphologies were determined with surface photographs and scanning electron microscopy (SEM) images. Ni nano particles were deposited in conductive TiOx nano tubes arrays via pulsed electrodeposition method. Their catalytic activity towards the hydrogen evolution reaction (HER) was assessed by recording cyclic voltammetry technique, cathodic currentepotential curves, hydrogen gas volumes and electrochemical impedance spectroscopy techniques. The highest HER activity thought the studied is observed on the TiOx(30)-Ni.
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    Article
    YUMUŞAK ÇELİK KORUMA İÇİN KOROZYON İNHİBİTÖRÜ OLARAK SULFANİLAMİD KULLANIMI
    (2018) Yıldız, Reşit; Toprak Döşlü, Serap; Dehri, İlyas
    Bu çalışmada, Sulfanilamide 0,5 M HCl çözeltisinde yumuşak çeliğin (YÇ) yüzeyine adsorpsiyonu ve korozyon inhibisyon mekanizması çalışılmıştır. Bu amaçla elektrokimyasal teknik kullanılmıştır. Elde edilen sonuçlara göre; Sulfanilamid’nın inhibisyon etkinliği artan Sulfanilamid derişimi ile artış göstermiştir. 10 mM Sulfanilamide içeren 0,5 M HCl çözeltisinde inhibisyon etkinliği % 87 olarak tespit edilmiştir. İnhibitör içeren ve içermeyen korozif ortamlar ile maruz bırakılmış yumuşak çelik yüzeyleri taramalı elektron mikroskopu (SEM) ile incelenmiştir. Elde edilen sonuçlar Sulfanilamide metal yüzeyinde homojen dağılımlı, sıkı bir film oluşturarak koruma sağladığı belirlenmiştir.
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    Article
    Electrocatalysis property of CuZn electrode with Pt and Ru decoration
    (2021) Toprak Döşlü, Serap; DÖNER, ALİ; Yıldız, Reşit
    Electrocatalysis properties strongly depend on the interaction of metallic particles and this interaction enables to change the electronic structure of alloys which enhances the catalytic activity. This property is the key factor in the developing of cost-effective and efficient Hydrogen Evolution Reaction (HER) electrocatalysts for sustainable hydrogen production. In this study, novel electrocatalysts which are decorated with Pt and Ru have been developed for HER electrocatalysis. Microscopic analysis such as scanning electron microscopy (SEM), energy dispersive X-ray (EDX), X-ray diffraction (XRD) and atomic force microscopy (AFM) are performed to determine the morphological and compositional structures. Electrocatalysis properties are evaluated by cathodic current-potential curves, electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV) in 1.0 M KOH solution. Chronoamperometry (CA) and cycle tests are used for stability/durability of electrocatalysts. Results show that a small onset potential of the porous Cu/Ni/CuZnePt is obtained for HER. Exchange current density and polarization resistance are found to be 5.39 mA cm2 and 2.0 U cm2 at overpotential of 100 mV for porous Cu/Ni/CuZnePt, respectively, indicating that Cu/Ni/CuZnePt is higher electrocatalytic properties than the others. Moreover, very low overpotentials at 10 and 40 mA cm2 are obtained on porous Cu/ Ni/CuZnePt compared with porous Cu/Ni/CuZneRu and Cu/Ni/CuZn. Porous Cu/Ni/CuZn ePt also displays excellent stability/durability in test solution. The remarkable electrocatalysis properties of porous Cu/Ni/CuZnePt can be explained due to high porous structure, leaching of Zn from the deposit, intrinsic activity of Pt as well as changing in the electronic structure. It should be considered that porous Cu/Ni/CuZnePt is of high corrosion resistance in test solution for 120 h, which makes it good candidate for HER.
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    Article
    Citation - WoS: 3
    Citation - Scopus: 3
    Electrochemical Tuning of Ni-Fe Catalysts Using Various Techniques for Efficient Hydrogen Evolution in Alkaline Media
    (Mdpi, 2025) Topak, Ali; Doslu, Serap Toprak; Toprak Döşlü, Serap
    The search for cost-effective and scalable electrocatalysts for the hydrogen evolution reaction (HER) remains a critical challenge in advancing sustainable energy technologies. This study presents a novel approach to optimizing nickel-iron (Ni-Fe) alloy coatings on graphite (G) electrodes through a strategic combination of composition tuning, nickel modification, and various electrochemical optimizations. Unlike conventional studies, which primarily focus on static alloy compositions, this work systematically investigates the impact of dynamic nickel modification durations on the catalytic performance and conductivity of Ni-Fe alloys. By addressing the conductivity limitations caused by iron oxidation, the study demonstrates the enhanced HER kinetics achieved with a Ni-modified G/Ni%95Fe%5-Ni(60s) electrode. Electrochemical and structural analyses reveal the synergistic effects of nickel modifications on improving active site accessibility, reducing overpotential, and increasing hydrogen production efficiency. This work introduces a scalable methodology for tailoring Ni-Fe catalysts, offering significant advancements in the development of robust, cost-effective electrocatalysts for industrial-scale hydrogen production.
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    Conference Object
    Electrochemical Behavior of Single Pt atoms dispersed on Cu/Ni Electrode in Alkaline Environment
    (2023) DÖNER, ALİ; Toprak Döşlü, Serap
    It is important the development of cost-effective Pt based electrocatalyst for industrial water splitting. In this study, to prepare cost-efficient Pt-based electrocatalyst for hydrogen evolution, Cu electrode is deposited with nickel (Cu/Ni) and this surface is modified with single atom dispersion of Pt by electrodeposition method (Cu/Ni-Pt). Hydrogen evolution and corrosion behaviours of prepared electrode (Cu/Ni-Pt) are examined in 1.0 M KOH solution using cyclic voltammetry (CV), cathodic current-potential curves, electrochemical impedance spectroscopy (EIS) and anodic current-potential curves. Moreover, electrocatalytic activity of Cu/Ni-Pt is also compared with Cu/Ni-Pd. The resultant Pt-based electrocatalyst with single atom dispersion has remarkably boosted hydrogen evolution acitivity of Cu/Ni as well as showing high corrosion performance after long-term immersion times. We emphasize the investigation of Pt-based single atom-containing electrocatalysts on the HER activity.
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    Conference Object
    Electrochemical Hydrogen Production by Using G/Ni/Ag Cathode
    Yıldız, Reşit; Doğru, Mert, Başak; Toprak Döşlü, Serap
    In this study graphite (G) electrode was coated with nickel and decorated with silver (G/Ni/Ag) and we used this modified electrode as cathode in alkaline water electrolysis system. The electrochemical characterization of G, G/Ni and G/Ni/Ag was achieved via cyclic voltammetry technique. Hydrogen evolution performance of electrodes was investigated via chronoamperomety, cathodic polarization curves and electrochemical impedance measurements. Results showed that hydrogen production efficiency significantly increased and charge transfer resistance of electrodes decreased via Ni/Ag multilayer.
  • Thumbnail Image
    Conference Object
    2,4-DİAMİNO-6- PHENYL-1,3,5 TRİAZİNE AS EFFİCİENT CORROSİON İNHİBİTOR FOR MİLD STEEL İN HCL SOLUTİON
    (2018) Toprak Döşlü, Serap
    Bu çalışmada 2,4-Diamino-6- Phenyl-1,3,5 triazine (DPT) 0,5 M HCl çözeltisinde yumuşak çeliğin korozyonu üzerine inhibitör etkisi farklı derişimlerde araştırılmıştır. Deneysel veriler EIS ve SEM teknikleri kullanılarak elde edilmiştir. DPT’in yumuşak çelik yüzeyine adsorpsiyonunun Langmuir adsorpsiyon izotermine uyduğu tespit edilmiştir. DPT’in inhibisyon etkinliği, inhibitör moleküllerinin metal yüzeyine adsorplanarak koruyucu bir film oluşturması ile açıklanabilir.
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    Article
    Mezopotamya’da Doğan ve Hiç Batmayan Mardin Güneşi: Bulgur
    (2022) Toprak Döşlü, Serap
    Bulgur, binlerce yıl öncesine dayanan geçmişe sahip, pek çok kültür ve toplumda yer almış, ilk üretiminden günümüze kadar yöntem olarak değişikliğe uğramamış, lezzetli, besleyici ve doğal bir üründür. Bulgur sadece yemeklerin ana malzemesi olmanın dışında sevinç ve kederde, varlık ve yoklukta, yaşam ve ölümde kültürün bir parçası olarak varlık göstermiştir. Tahıl üretimin ilk yapıldığı yer kabul edilen Mezopotamya topraklarında üretilen bulgur, hem eşsiz Mardin yemeklerinin yapımında kullanılmakta, hem de Türkiye’nin bulgur ihtiyacının önemli bir kısmını karşılamaktadır. Bu derlemede Mardin bulgurunun hem beslenmedeki hem de mutfak kültüründeki önemi vurgulanmıştır.
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    Thesis
    SOL JEL YÖNTEMİYLE TiO2 KAPLANMIŞ PASLANMAZ ÇELİK ELEKTROTLAR ÜZERİNDEKİ POLİ(ANİLİN-KO-İNDOL) FİLMİNİN ELEKTROKİMYASAL DAVRANIŞLARI
    (ÇUKUROVA ÜNİVERSİTESİ, 2013) Toprak Döşlü, Serap
    Bu çalışmada, paslanmaz çelik elektrot ve sol jel yöntemi ile TiO2 kaplanmış paslanmaz çelik elektrot üzerinde poliindol, polianilin ve indol-anilin kopolimerleri sentezlenmiştir. Kopolimer sentezi, iki farklı monomer oranında ki indol:anilin 1:1 ve 1:9 çözeltilerinde gerçekleştirilmiştir. Polimerlerin sentezi elektrokimyasal yöntem ile gerçekleştirilmiştir. TiO2 sol jel çözeltisi ise titanyum bütoksitin hidrolizi ile hazırlanmıştır. TiO2 elektrot yüzeyine daldırma yöntemi ile kaplanmıştır. Yüzeydeki TiO2 kaplama SEM ve EDX yöntemi ile analiz edilmiştir. Sentezlenen polimerin yapısı FT-IR spektroskopisi, morfolojisi SEM görüntüleri ile incelenmiştir. Ayrıca, poliindolün bağlanma şeklini aydınlatmak için 1H NMR spektroskopisi incelenmiştir. Elektrotların korozyon davranışları elektrokimyasal impedans spektroskopisi yöntemi ve anodik polarizasyon eğrileri ile araştırılmıştır.
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    Article
    Citation - WoS: 15
    Citation - Scopus: 17
    Electrocatalysis property of CuZn electrode with Pt and Ru decoration
    (International Journal of Hydrogen Energy, 2021) Toprak Döşlü, Serap; Döner, Ali; Yıldız, Reşit
    Electrocatalysis properties strongly depend on the interaction of metallic particles and this interaction enables to change the electronic structure of alloys which enhances the catalytic activity. This property is the key factor in the developing of cost-effective and efficient Hydrogen Evolution Reaction (HER) electrocatalysts for sustainable hydrogen production. In this study, novel electrocatalysts which are decorated with Pt and Ru have been developed for HER electrocatalysis. Microscopic analysis such as scanning electron microscopy (SEM), energy dispersive X-ray (EDX), X-ray diffraction (XRD) and atomic force microscopy (AFM) are performed to determine the morphological and compositional structures. Electrocatalysis properties are evaluated by cathodic current-potential curves, electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV) in 1.0 M KOH solution. Chronoamperometry (CA) and cycle tests are used for stability/durability of electrocatalysts. Results show that a small onset potential of the porous Cu/Ni/CuZn–Pt is obtained for HER. Exchange current density and polarization resistance are found to be 5.39 mA cm−2 and 2.0 Ω cm2 at overpotential of −100 mV for porous Cu/Ni/CuZn–Pt, respectively, indicating that Cu/Ni/CuZn–Pt is higher electrocatalytic properties than the others. Moreover, very low overpotentials at 10 and 40 mA cm−2 are obtained on porous Cu/Ni/CuZn–Pt compared with porous Cu/Ni/CuZn–Ru and Cu/Ni/CuZn. Porous Cu/Ni/CuZn–Pt also displays excellent stability/durability in test solution. The remarkable electrocatalysis properties of porous Cu/Ni/CuZn–Pt can be explained due to high porous structure, leaching of Zn from the deposit, intrinsic activity of Pt as well as changing in the electronic structure. It should be considered that porous Cu/Ni/CuZn–Pt is of high corrosion resistance in test solution for 120 h, which makes it good candidate for HER.