The Preparation of Cu@al2o3 Nanofiber and Cu@al2o3 Nanofiber-Sio2 (mld) Nanomaterials by Organometallic and Molecular Layer Deposition Techniques and Their Application in the Nanofluid System
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2023
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Bu tez çalışması ısı değiştiricilerde, ısı transferini iyileştirmeye yönelik nanoakışkan sistemlerinde kullanılmak üzere (i) organometalik yöntemle kolloidal halde kararlı küçük parçacık boyutlu bakır nanoparçacıklarının sentezlenip Al2O3 nano fiberleri yüzeyine dekore edilmesini (Cu@Al2O3 nano fiber), (ii) Al2O3 nano fiberleri yüzeyine dekore ligant serbest bakır nanoparçacıklarının arasında moleküler katman depolama yöntemiyle SiO2 katmanlarının oluşturulmasını (Cu@Al2O3-nano fiber-SiO2 (MLD)), (iii) ileri analitiksel yöntemler kullanılarak bu yeni malzemelerin morfolojik ve yapısal tanımlamalarının yapılmasını, (iv) Cu@Al2O3 nano fiber ve Cu@Al2O3-nano fiber-SiO2 (MLD) malzemelerinin su ve etilen glikol içerisinde dağılımları sağlanarak oluşturulacak nanoakışkan sistemleri içerisindeki ısı transferi parametrelerinin incelenmesini amaçlamaktadır.
The proposed thesis work is aimed to (i) organometallic synthesis of colloidally stable small sized copper nanoparticles and their decoration onto the Al2O3 nanofiber surface (Cu@Al2O3 nanofiber), (ii) molecular layer deposition (MLD) technique preparation of SiO2 layers between ligand free Cu nanoparticles supported on Al2O3 nanofiber surface (Cu@Al2O3-nanofiber-SiO2 (MLD)) for the employment in nanofluid systems to improve heat transfer in heat exchangers, (iii) the structural and morphological characterization of these new materials by using advanced analytical techniques, (iv) the investigation of heat transfer parameters of nanofluid systems composed of the dispersion of Cu@Al2O3 nanofiber and Cu@Al2O3-nanofiber-SiO2 (MLD), separately in water and ethylene glycol.
The proposed thesis work is aimed to (i) organometallic synthesis of colloidally stable small sized copper nanoparticles and their decoration onto the Al2O3 nanofiber surface (Cu@Al2O3 nanofiber), (ii) molecular layer deposition (MLD) technique preparation of SiO2 layers between ligand free Cu nanoparticles supported on Al2O3 nanofiber surface (Cu@Al2O3-nanofiber-SiO2 (MLD)) for the employment in nanofluid systems to improve heat transfer in heat exchangers, (iii) the structural and morphological characterization of these new materials by using advanced analytical techniques, (iv) the investigation of heat transfer parameters of nanofluid systems composed of the dispersion of Cu@Al2O3 nanofiber and Cu@Al2O3-nanofiber-SiO2 (MLD), separately in water and ethylene glycol.
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Kimya, Chemistry
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95