Erdem, İlker
Loading...
Profile URL
Name Variants
Erdem, I. & Erdem, Ilker & Erdem, Ilker Erdem, I Erdem, I. & Erdem, İlker
Job Title
Dr. Öğr. Üyesi
Email Address
ilker.erdem@agu.edu.tr
Main Affiliation
02.07. Malzeme Bilimi ve Nanoteknoloji Mühendisliği
Status
Current Staff
Website
ORCID ID
Scopus Author ID
Turkish CoHE Profile ID
Google Scholar ID
WoS Researcher ID
No research topics data found.
Sustainable Development Goals
1NO POVERTY
0
Research Products
2ZERO HUNGER
0
Research Products
3GOOD HEALTH AND WELL-BEING
1
Research Products
4QUALITY EDUCATION
0
Research Products
5GENDER EQUALITY
0
Research Products
6CLEAN WATER AND SANITATION
0
Research Products
7AFFORDABLE AND CLEAN ENERGY
1
Research Products
8DECENT WORK AND ECONOMIC GROWTH
0
Research Products
9INDUSTRY, INNOVATION AND INFRASTRUCTURE
0
Research Products
10REDUCED INEQUALITIES
0
Research Products
11SUSTAINABLE CITIES AND COMMUNITIES
0
Research Products
12RESPONSIBLE CONSUMPTION AND PRODUCTION
0
Research Products
13CLIMATE ACTION
0
Research Products
14LIFE BELOW WATER
1
Research Products
15LIFE ON LAND
0
Research Products
16PEACE, JUSTICE AND STRONG INSTITUTIONS
0
Research Products
17PARTNERSHIPS FOR THE GOALS
0
Research Products
Documents
13
Citations
92
h-index
6
Documents
10
Citations
66
No records found in other affiliations.
Scholarly Output
13
Articles
10
Views / Downloads
165/56
Supervised MSc Theses
1
Supervised PhD Theses
0
WoS Citation Count
30
Scopus Citation Count
44
Patents
0
Projects
7
WoS Citations per Publication
2.31
Scopus Citations per Publication
3.38
Open Access Source
9
Supervised Theses
1
| Journal | Count |
|---|---|
| Journal of the Australian Ceramic Society | 3 |
| Black Sea Journal of Engineering and Science | 1 |
| Cutting-Edge Applications of Nanomaterials in Biomedical Sciences | 1 |
| Hacettepe Journal of Biology and Chemistry | 1 |
| Journal of Boron | 1 |
Current Page: 1 / 2
Scopus Quartile Distribution
Competency Cloud
13 results
Scholarly Output Search Results
Now showing 1 - 10 of 13
Article Citation - Scopus: 1Ethyl Vinyl Acetate (EVA) Composites With Nanoclays and Boric Acid: Thermal and Mechanical Properties(Turkish Energy, Nuclear and Mining Research Agency, 2025-04-01) Erdem, İlker; Kapçı, Mehmet Fazıl; Avcı, ŞeymaPolimerler pek çok uygulamada kullanılmaktadırlar fakat yanabilir olmaları sorun teşkil etmektedir. Polimerlere yanma dayanımı seramikler gibi (oksitler, hidroksitler, killer, vb.) inorganik malzemeler kullanılarak kazandırılabilir. Bu katkıların ilavesi polimer-inorganik kompozitlerin mekanik özelliklerini de değiştirebilir ki kompozit hazırlamada bu da dikkate alınmalıdır. Bu çalışmada etil vinil asetata (EVA) iki faklı nano-kil (ağırlıkça 20/100 oranına kadar) ve borik asit eklenerek polimerin yanmasında olası gecikme araştırılmıştır. Nano-kil ve BA ilavesinin etkisini belirlemek için saf polimer ve polimer-inorganik kompozitler için mekanik özellikler de belirlenmiştir. Hazırlanan nanokompozitlerin kimyasal yapıları (FT-IR, XRD), ısıl özellikleri (TGA), mekanik özellikleri (çekme testi) ve yanma davranışları değerlendirilmiştir. En yüksek nano-kil içeriğine sahip NC 1.4 örneği en uzun sürede yanmıştır. NC 2 örneğinin diğer örneklerden daha yüksek gerilim dayanımına ve Young katsayısına sahip olduğu bulunmuştur. Nano-killerdeki organik yüzey dönüştürücüler ve BA ilavesi nano-kil/EVA kompozitlerinin ısıl ve mekanik özellikleri üzerinde etkili olmuştur.Article Influence of Silica Nanoparticles on the Stability of Paraffin Wax Emulsion(Yildiz Technical Univ, 2022) Ibrahim, Aliu Pennah; Erdem, Ilker; Gonen, MehmetParaffin wax emulsions have been used widely in various areas. However, the basic problem faced in all areas is instability of emulsion. Different methods and emulsifiers have been proposed to overcome this problem. This study focuses on using a commercial emulsifier, (IK8000) and aqueous silica nanoparticles to formulate paraffin wax emulsions and investigate their effects on the stability and mean diameter of paraffin wax emulsions. For comparison purpose, different emulsifier, PEG-7 Glyceryl Cocoate was used to stabilize one of 20 % (wt./ wt.) paraffin wax emulsions. The PEG-7-Glyceryl Cocoate stabilized emulsion phase -separated after 3 days while the IK-8000 stabilized remained stable for more than a month. The effect of the silica nanoparticles on the emulsion's stability was studied by observing samples stored for over 2 months. It was seen that aqueous silica nanoparticles helped to increase the stability of the paraffin wax emulsions. Emulsions prepared without silica nanoparticles (only IK-8000) were stable for just a month (1 month) whereas those which were formulated with silica nanoparticles and IK-8000 remained stable for more than 2 months (> 2 months). However, the addition of aqueous silica nanoparticles did not have a significant effect on the mean particle size of the emulsion. It was observed that the addition of 0.5 mL aqueous silica nanoparticles to the paraffin wax emulsion first increased the mean particle size from 1.142 mu m to 2.680 mu m. Nonetheless, further increasing the amount of the aqueous silica nanoparticles from 1.0-5.0 mL decreased the mean particles size of the paraffin wax emulsion from 2.680 mu m to 0.942 mu m. The contact angle formed by water drop on the surfaces coated with different emulsion samples of 30%wt. PWE, 40%wt. PWE, 50%wt. PWE and 60 %wt. PWE were measured. The higher the degree of solid content in emulsion, the greater the contact angle measured thus higher hydrophobicity.Article Preparation of Nano Magnesium Hydroxide as a Potential Flame Retardant: Effects of Alcohol Type and Drying Method(Institute of Physics, 2025-12-01) Erdem, İlker; Yıldız, UğurArticle Citation - WoS: 1Citation - Scopus: 1A Novel Bifunctional Organic Supported Nano-Titania Photocatalyst via the Sol-Gel Method Using Walnut-Shell(Elsevier, 2026-01) Erdem, IlkerNano-structured photocatalytic titania was prepared via the sol-gel method on the surface of carbon-rich organic support in situ to be used as a supported photocatalyst. The preparation process was lean, including sol preparation, mixing and calcination (450 degrees C). The microstructure and crystallinity were characterized by using SEM and XRD analysis. The prepared photocatalytic material shows better water clarification (dye removal) efficiencies than commercial nano titania, either excited by UV or visible light, or kept in the darkness. A bifunctional composite having both photocatalysis and adsorption capabilities simultaneously was prepared using walnut shell (WNS) as organic support for the first time. It has considerably higher dye removal rates (kapp values (min(-1))) when compared with commercial nano titania: 0.1827 (2.83 times higher), 0.1188 (9.35 times higher) and 0.1066 (12.25 times higher) under UV light, under visible light, and in the darkness, respectively, making it a promising candidate for water clarification processes.Article Green Synthesis of Silver Nanoparticles Using Walnut Shell Powder and Cynara sp. and Their Antibacterial Activities(2022-10-09) Erdem, İlker; Çakır, ŞerifeGümüş (Ag) ilgi çeken özellikleri ile (katalitik etkinlik, antimikrobiyal, vb.) bilinen bir malzemedir. Nano boyuttaki Gümüşartan yüzey alanı sebebiyle gelişmiş özellikler sunar. Yeşil üretim görece daha az zararlı malzemelerin kullanılması sebe - biyle umut veren daha çevre dostu bir malzeme hazırlama/üretme yöntemidir. Bu çalışmada, gümüş nano parçacıkların (Ag NP) hazırlanması için bitki özütleri (enginar, ceviz kabuğu tozu) hazırlama ortamı olarak kullanılmıştır. Farklı iki bitki özütüyle hazırlanan nano parçacıkların boyutları, sırasıyla ~46 nm ve ~109 nm olmuştur. Hazırlanan Ag NP’ların E.coli and S.aureus suşlarına karşı antibakteriyel etkileri belirlenmiş ve minimum etkili yoğunlukları araştırılmıştır.Article Citation - WoS: 1Citation - Scopus: 2Green Synthesis and Characterization of Zinc Oxide Nanoparticles via Thyme for Biomedical Applications: Effect of Plant Extract Concentration and Drying Method(Springer, 2025-10-15) Karakaya, Humeyra; Kizilates, Burcu; Erdem, IlkerGreen synthesis of nano particles using plant extracts is sustainable, cost-effective, and eco-friendly. However, the synthesis parameters are still being investigated. In this study, zinc oxide nanoparticles (ZnO NPs) were prepared via thyme extract (green synthesis) and the effect of synthesis parameters were investigated. Samples with different concentrations of thyme plant extract (PE) (10, 16 & 24% (v/v) PE / Zn salt solution) were prepared and two different drying methods (freeze-drying (FD) and oven-drying (OD)) were performed. XRD results showed the hexagonal crystalline ZnO were formed with considerable crystallinity (70.8-75.1%) without further heat treatment (calcination). The crystallite sizes of ZnO NPs were determined to be in the range of 11.9-14.8 nm. The ZnO NPs prepared via PE concentration of 16% (v/v) and freeze-drying was with the finest crystallite size (11.9 nm) and considerable crystallinity (72.9%). ZnO NPs prepared via FD method were found to have smaller particle sizes, thus providing a higher surface-to-volume ratio. DLS (dynamic light scattering) analysis was used for determining the particle size distribution (PSD) and surface charge of ZnO NPs at acidic, neutral and basic pH values. The antibacterial characteristics of ZnO NPs were determined against Gram (+) and (-) bacteria. The ZnO NPs with the finest microstructure (16% PE (v/v), FD) had the highest antibacterial activity. The green synthesized ZnO NPs prepared in this study may be promising candidates for various applications including biomaterials and biomedical applications with their fine microstructure and considerable antibacterial activity.Article Citation - WoS: 5Citation - Scopus: 6Modification of Surface Charge Characteristics for Unsupported Nanostructured Titania-Zirconia UF/NF Membrane Top Layers With Calcination Temperature(Springer, 2019-04-18) Erdem, Ilker; Ciftcioglu, MuhsinCeramic membranes are more advantageous alternatives especially for harsh working conditions when compared with the polymeric membranes. The porous multilayer structure of the ceramic membranes (composed of support, intermediate, and top layers) can be prepared via different oxides. Titania and zirconia, having superior properties, are mainly preferred for the top layer formation. The separation properties of the membrane are both dependent on pore morphology and surface charge of the oxide(s) forming the top layer. The effect of surface charge in separation may be very significant in case of filtration of charged species with relatively lower mass as in the ultrafiltration (UF) and nanofiltration (NF). In this study, unsupported membrane top layers were prepared with varying titania/zirconia ratios by sol-gel technique. Their surface charges at different pH conditions after calcination at varying temperatures (400 degrees, 500 degrees, and 600 degrees C) were determined. The surface charge of the pure titania (full Ti) top layer was decreasing with the increasing calcination temperature. The highest magnitudes of zeta potential for both acidic and basic conditions were measured via Zr rich top layer (TiZr2575) at calcination temperatures >= 500 degrees C, which was composed of anatase, rutile (titania), and tetragonal (zirconia) phases after calcination. The tailor-made top layer can be prepared with modifications during membrane preparation.Master Thesis Koruyucu ve Elektrik Gücü Sağlayıcı Askeri Kıyafetlere Yönelik Malzeme Seçeneklerinin Değerlendirilmesi(Abdullah Gül Üniversitesi, Fen Bilimleri Enstitüsü, 2020) KAAN, Murat; Kaan, Murat; Erdem, İlkerAskeri uygulamalarda kullanılan balistik yelekler, genellikle farklı malzeme katmanlarından oluşturulur ve sonrasında birleştirilerek son ürün haline getirilir. Geçmişe kıyasla günümüzde, balistik yeleklerin işlevselliği ve üretkenliğinin kritik bir öneme ulaştığı gözlemlenmektedir. ANSYS, FEA analizini hesaplamak için gerekli program olarak kullanılmış ve postülasyonun ilk bölümünde yeleğin ön katmanı için kullanılacak malzemenin tespiti sağlanmıştır. Günümüzde, neredeyse tüm balistik yeleklerin malzeme oluşumunda kevlar ve epoksi katmanları kullandığı için, bu araştırmada da benzer malzeme adayları önceliklendirilmiştir. Balistik yelek tasarımında en önemli hususlardan olan malzeme seçiminde ise yeleğin ön tabakasının doğru tespiti en kritik husustur, çünkü bu noktada birçok farklı malzeme alternatifi mevcut olup doğrudan yeleğin güvenilirliğini etkilemektedir. Bu kapsamda, Silisyum Karbür, Bor Karbür (BC) ve Alümina (Al2O3) olmak üzere üç malzeme test edilmiş ve değerlendirilmiştir. Aday malzemelerden olan Silikon Karbür (SiC), diğer malzemelere kıyasla düşük deformasyon, gerilme, gerinim ve kayma gerilmesi sergileyerek yeleğin ön katman malzemesi olarak seçilmiştir. Tasarımın balistik anlamda güvenilir olduğunu kanıtlamak için NIJ standartları baz alınarak yeleğe belirli noktalardan, sırasıyla ve 6 (altı) adet kusursuz atış tabirinde atışlar yapılmıştır. Kısacası bu tez, balistik koruyucu yeleklerin muharebe sırasında ciddi yaralanmalardan korunma ve askerin taşıdığı ekipmanın güç ihtiyacını sağlayacak yeni bir işlev sağlayacak hibrit bir çözümü kapsamlı bir şekilde incelemektedir. Ayrıca, balistik yeleğe bir batarya katmanı eklenerek sağlanan avantaj literatüre yeni ve kullanışlı bir fikir olarak sunulmaktadır.Article Citation - Scopus: 3The Surface Charge of Unsupported Nano-Structured Titania Ceramic Membrane Top Layers With Varying Calcination Temperatures(University of Chemical Technology and Metallurgy journal@uctm.edu, 2019) Erdem, İlker; Çiftçiog̀lu, MuhsinTitania is one of the most preferable ceramic membrane materials of superior durability (as zirconia) when compared to that of other ceramics, e.g. alumina or silica. The surface charge of the membrane top layer is an important parameter of the separation performance of the multilayer ceramic membrane due to the Donnan exclusion mechanisms. In this study, the change of the surface charge of unsupported nano-structured titania top layer is investigated with calcination temperature variation. The effect observed indicates the possibility of preparation of tailor-made top layers for multilayer ceramic membranes. © 2019 Elsevier B.V., All rights reserved.Article Thermal and Mechanical Properties of Ethyl Vinyl Acetate (Eva) / Nano-Clays or Slaked Lime Composites(2025-05-15) Erdem, İlker; Avcı, ŞeymaEthyl vinyl acetate (EVA) is a widely used copolymer in various industrial applications. One concern about its utilization is its flammability as other polymeric materials. The inorganic fillers like clays, metal hydroxides (e.g. of Al, Mg), metal oxides (e.g. alumina) are evaluated as environmentally benign additives to enhance the flammability characteristics of the polymers. The composites prepared via these inorganic fillers should also be characterized by considering their required mechanical properties for specific applications. The possible utilization of different nano-clays (organically surface modified montmorillonite (MMT)) and “slaked lime” (Ca(OH)2 without surface modification) was investigated in the current study. The nano-clay with exfoliated morphology in the EVA matrix was found to be more effective on both mechanical and flammability characteristics of EVA composites. Ca(OH)2 was also moderately effective on mechanical and thermal characteristics of the EVA composite. The inorganic filler content of EVA composites may be increased for better flame-retardancy, but the mechanical properties should be investigated simultaneously.