Detaylı Arama
İptal
Bulunan: 13 Adet 0.000 sn
- Eklemek veya çıkarmak istediğiniz kriterleriniz için 'VE' / 'VEYA' /'DEĞİL' seçeneğini kullanabilirsiniz.
- İptal tuşuna basarak normal aramaya dönebilirsiniz.
Filtreler
Filtreler
Bulunan: 13 Adet 0.000 sn
BM Sürdürülebilir Kalkınma : Erişilebilir ve Temi ... ✕Araştırmacılar : Nahit AKTAŞ ✕
Koleksiyon [1]
Araştırmacılar [3]
BM Sürdürülebilir Kalkınma [1]
Fakültesi / Enstitütü [1]
Yayın Türü [1]
Yayımlanma Yılı [3]
Dil [1]
Kaynak [10]
Veri Tabanları [7]
İndex Türü [3]
Yayıncı [5]
Bölümü [1]
Ulusal/Uluslararası [1]
Konu Başlıkları [35]
Prof. Dr. Nahit AKTAŞMühendislik Fakültesi
Erişilebilir ve Temiz EnerjiHerkes için karşılanabilir, güvenilir, sürdürülebilir ve modern enerjiye erişimi sağlamak
Erişime Açık

The enhanced TiO2-supported CdTe photocatalysts for photocatalytic hydrogen peroxide electrooxidation

Nahit AKTAŞ

At present, titanium dioxide (TiO2)-supported CdTe photocatalysts were prepared by wet impregnation method for photocatalytic hydrogen peroxide (H2O2) electrooxidation. The structural and morphology surface analyses of these photocatalysts were characterized by X-Ray diffraction (XRD), scanning electron microscopy-energy dispersive X-Ray (SEM-EDX) and mapping analysis, high-resolution transmission electron microscopy (HR-TEM), ultraviolet–visible (UV–VIS) spectroscopy, X-ray photoelectron spectroscopy (XPS), and inductively coupled plasma mass spectrometry (ICP-MS). In addition, the photocatal ...Daha fazlası

Makale 2023 Mühendislik Fakültesi Journal of Photochemistry and Photobiology A: Chemistry445 55 Görüntülenme
Erişime Açık

Tailoring Cadmium Composition on Titanium Dioxide to Achieve Enhanced Photocatalytic Glucose Fuel Cell Anode Performance

Nahit AKTAŞ

In this study, titanium dioxide (TiO2)-supported Cd catalysts were prepared at 0.05-3 of Cd loading by employing the incipient wetness impregnation method. These catalysts were characterized via X-ray diffraction (XRD), scanning electron microscopy-energy-dispersive X-ray (SEM-EDX), high-angle annular dark-field scanning transmission electron microscopy and TEM-EDS mapping, inductively coupled plasma-mass spectrometry ( ICP-MS), X-ray photoelectron spectroscopy (XPS), temperature-programmed reduction (TPR), temperature-programmed oxidation (TPO), and temperature-programmed desorption (TPD). XR ...Daha fazlası

Makale 2021 Mühendislik Fakültesi ACS Applied Energy Materials4 ( 11 ) 80 Görüntülenme
Erişime Açık

Non-Metal Polymeric Bioparticles Based on Maleic Acid/Citric Acid as a Catalyst for H-2 Generation from NaBH4

Nahit AKTAŞ

Novel metal-free catalysts were synthesized form maleic acid (MA) and citric acid (CA) based polymers for hydrogen generation form NaBH4. Surfactant-free-self-emulsion polymerization technique was used to synthesize poly(Maleic acid)(poly(MA)), poly(Citric acid)(poly(CA)) and poly(Maleic acid-co-Citric Acid) poly(MA-co-CA)) polymeric micro-particles in a single step. The prepared catalysts were characterized by zeta potential, SEM, FTIR and TGA. The hydrodynamic diameter of the poly(MA), poly(CA) and poly(MA-co-CA) micro-particles were found to be 0.681, 1.273, 1.604 mu m and the zeta potentia ...Daha fazlası

Makale 2022 Mühendislik Fakültesi Journal of Polymers and the Environment30 ( 9 ) 132 Görüntülenme
Erişime Açık

Hydrogen Production from Methanolysis of Sodium Borohydride by Non-metal p(CO) Organo-particles Synthesized from Castor Oil

Nahit AKTAŞ

In this study, the poly (Castor Oil) (p(CO)) organo-particle from natural castor oil (CO) was synthesized for the first time in literature for sodium boron hydride (NaBH4) methanolysis hydrogen production. As is known, catalysts are used in most reactions performed in the chemical industry. Here, by analytical method, Fourier Transform Infrared Spectroscopy (FT-IR), Thermal Gravimetric Analyzer (TGA) and Ultra Field Emission Energy Dispersive Spectroscopy (SEM) analyzes of the catalyst were performed and the characteristics of the catalyst were determined. Also for the methanolysis of the p(CO ...Daha fazlası

Makale 2022 Mühendislik Fakültesi Journal of Polymers and the Environment30 ( 11 ) 49 Görüntülenme
Erişime Açık

The role and effect of CdS-based TiO2 photocatalysts enhanced with a wetness impregnation method for efficient photocatalytic glucose electrooxidation

Nahit AKTAŞ

The 0.1 CdS-based TiO2 photocatalysts with different atomic ratios were synthesized by the wetness impregnation (WI) method. These photocatalysts were characterized to actively determine surface area using TPx analyses (TPR, TPO, and TPD). Furthermore, surface structures and properties of photocatalysts were defined by analyses such as XRD, UV-VIS spectroscopy, SEM-EDX and mapping, fluorescence spectroscopy, TEM-EDS, and XPS. The photocatalytic activities of photocatalysts were examined by CV, CA, and EIS electrochemical analyses to investigate use in photocatalytic fuel cells (PFCs) in glucos ...Daha fazlası

Makale 2022 Mühendislik Fakültesi Surfaces and Interfaces33 18 Görüntülenme
Erişime Açık

A REMARKABLE SYNERGIC EFFECT OF POLY (ACRYCLIC ACID) HYDROGEL ANCHORED PD CATALYSTS IN FORMIC ACID ELECTROOXIDATION REACTION

Nahit AKTAŞ

Polymer-based catalysts have never been used before as anode catalysts in direct formic acid fuel cells. At present, Poly (acrylic acid), Poly (AA) was prepared and electrodes were constructed on graphite pencil (G) from these hydrogels. Furthermore, Pd doped Poly (AA)/G electrodes were prepared by employing electrodeposition techniques, and their formic acid electrooxidation (FAEO) activities were examined via cyclic voltammetry, chronoamperometry, and electrochemical impedance spectroscopy. These electrodes were characterized by DT-TGA, FTIR, and SEM-EDX. It was observed that Poly (AA)/G wer ...Daha fazlası

Makale 2022 Mühendislik Fakültesi International Journal of Ecosystems and Ecology Science - IJEES12 ( 4 ) 178 Görüntülenme
Erişime Açık

Photocatalytic glucose electrooxidation of titanium dioxide doped CdTe enhanced for a photocatalytic fuel cell

Nahit AKTAŞ

The 0.1 CdTe/TiO2 photocatalysts with different atomic molar ratios (90-10, 70-30, 50-50, and 30-70) were synthesized by the wetness impregnation method and characterized by the XRD, SEM-EDX and mapping, N2 adsorption-desorption, ICP-MS, TEM-EDS and STEM mapping, UV-VIS spectroscopy, fluorescence spectroscopy, XPS, TPR, TPO, and TPD analyses. The photocatalytic activities were examined to investigate by CV, CA, and EIS electrochemical analyses for photocatalytic fuel cells (PFCs) in glucose solution in the dark and under UV illu-mination. The characterization analyses revealed that anatase TiO ...Daha fazlası

Makale 2022 Mühendislik Fakültesi Fuel330 89 Görüntülenme
Erişime Açık

Synthesis of Poly(ginger oil) Organo Particles as a Metal Free Catalysis and Their Use in Hydrogen Production from Sodium Borohydride Methanolysis

Nahit AKTAŞ

The use of the metal free catalysts synthesized form natural and environmental friendly materials for fast generation of hydrogen is accomplished form sodium borohydride (NaBH4) methanolysis assays. Thus, green and metal free-catalysts were prepared form natural resources of ginger oil (GO). Polymeric GO particles were synthesized via emulsion polymerization technique and characterized in detail. The hydrodynamic diameters of p(GO) particles were found to be in the 220 nm and the zeta potential was - 162.48 mV. TGA results showed that thermal decomposition of microparticles was gradually conti ...Daha fazlası

Makale 2022 Mühendislik Fakültesi Journal of Polymers and the Environment31 ( 3 ) 27 Görüntülenme
Erişime Açık

Promoting formic acid and ethylene glycol electrooxidation activity on Ga modified Pd based catalysts

Hilal DEMİR KIVRAK | Nahit AKTAŞ

Herein, carbon nanotube (CNT)-supported Ga@PdAgCo catalysts were synthesized by sodium borohydride (SBH) sequential reduction method. These catalysts were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and inductively coupled plasma-mass spectrometry (ICP-MS). Characterization results revealed that these catalysts were succesfully preared at desired loading and atomic ratios. From the XRD pattern, the crystallite size of 0.5 Ga@PdAgCo(80:10:10)/CNT catalysts was found as 6.95 nm by utilizing the Scherrer equation. From ...Daha fazlası

Makale 2022 Mühendislik Fakültesi International Journal of Hydrogen Energy47 ( 83 ) 35 Görüntülenme
Erişime Açık

The effect of different carbon-based CdTe alloys for efficient photocatalytic glucose electrooxidation

Nahit AKTAŞ

The activated carbon (AC), graphene (G), reduced graphene oxide (rGO), carbon nanotube (CNT) supported CdTe photocatalysts at (50-50) atomic molar are synthesized by the sodium borohydride (SBH) method and characterized by the XRD, Micro-Raman, TEM-EDS, XPS, and TPx (TPR, TPO, and TPD) analyses. The CV, CA, and EIS electrochemical analyses are performed to investigate the catalytic activities of catalysts for photocatalytic glucose electrooxidation. Characterization analyses reveal that their electronic structures and surface properties change when carbon materials are doped with metal. The ph ...Daha fazlası

Makale 2022 Mühendislik Fakültesi Journal of Electroanalytical Chemistry920 104 Görüntülenme
Erişime Açık

The effect of titanium dioxide-supported CdSe photocatalysts enhanced for photocatalytic glucose electrooxidation under UV illumination

Nahit AKTAŞ

The wetness impregnation method was used to synthesize 0.1 CdSe/TiO2 photocatalysts with different atomic molar ratios (90-10, 70-30, 50-50, and 30-70). These catalysts were characterized by XRD, SEM-EDX and mapping, TEM-EDS, UV-VIS spectroscopy, fluorescence spectroscopy, XPS, TPR, TPO, and TPD analyses. Cyclic voltammetry (CV), chronoamperometry (CA), and electrochemical impedance spectroscopy (EIS) analyses were performed to examine the photocatalytic activity for photocatalytic fuel cells (PFCs) in glucose solution in the dark and under UV illumination. The characterization analyses reveal ...Daha fazlası

Makale 2022 Mühendislik Fakültesi International Journal of Hydrogen Energy47 ( 49 ) 91 Görüntülenme
Erişime Açık

Fabrication of Carbon-Doped Titanium Dioxide Nanotubes as Anode Materials for Photocatalytic Glucose Fuel Cells

Nahit AKTAŞ | Ali Osman SOLAK

In the present work, TiO2 nanotubes (TNT) and carbon-doped TiO2 nanotubes (C-TNT) were produced via the anodization method. Carbon doping was performed on TNT in a tubular oven employing two different 15 cm3/min total flow rates with varying compositions of acetylene (C2H2) and argon (Ar) as VC2H2/Ar = 7/93 (1 cm3/min C2H2   14 cm3/min Ar) for C-TNT (7:93) and VC2H2/Ar = 33/67 (5 cm3/min C2H2   10 cm3/min Ar) for C-TNT (33:67). The synthesized C-doped TNT was characterized by x-ray diffraction (XRD), Raman spectroscopy, and scanning electron microscopy (SEM). XRD, Raman spectra, and SEM result ...Daha fazlası

Makale 2021 Mühendislik Fakültesi Journal of Electronic Materials50 ( 4 ) 81 Görüntülenme
Yükümlülüklerimiz ve çerez politikamız T.C. 6698 sayılı Kişisel Verilerin Korunması Kanunu kapsamındadır.
Tamam
creativecommons
Bu site altında yer alan tüm kaynaklar Creative Commons Alıntı-GayriTicari-Türetilemez 4.0 Uluslararası Lisansı ile lisanslanmıştır.
Platforms