Geri Dön

Synthesis, characterization and surface modification of titanium and zinc oxide nanostructures for nanotoxicity, visible light emission and photocatalytic studies

Başlık çevirisi mevcut değil.

  1. Tez No: 401585
  2. Yazar: OSMAN ARSLAN
  3. Danışmanlar: PROF. DR. SANJAY MATHUR
  4. Tez Türü: Doktora
  5. Konular: Kimya, Chemistry
  6. Anahtar Kelimeler: Belirtilmemiş.
  7. Yıl: 2013
  8. Dil: İngilizce
  9. Üniversite: Universität zu Köln
  10. Enstitü: Yurtdışı Enstitü
  11. Ana Bilim Dalı: Belirtilmemiş.
  12. Bilim Dalı: Belirtilmemiş.
  13. Sayfa Sayısı: 204

Özet

Özet yok.

Özet (Çeviri)

Size dependent quantum confinement and differential characteristics of the anisotropic ZnO and TiO2 nanomaterials have attracted huge interest in the quest of new functional materials. In order to synthesize ZnO QD's for visible light emission applications, surface modulation for stability in dispersions and defect control at the surface is vitally important. Therefore long alkyl chain group (e.g. oleate) and biological molecule cysteine were used as vectors to regulate reactivity of the ZnO QD's and their visible light emission. Sol-gel chemistry serves as a versatile tool for the fabrication of controlled synthesis of quantum dots and to modify their properties for emission applications such as cell labeling, cell toxicity, solid-state light emission and to understand size/property correlation. High temperature liquid phase synthesis methods, namely heating up and hot injection method were applied toward the synthesis of anisotropic ZnO and TiO2 nanoparticles. Using different ligand concentrations and reaction conditions, semiconductor nanostructures of unusual geometrical shapes were synthesized and characterized. Hexagonal crystal growing habit of ZnO provided unusual geometrically distorted examples of the hexagonal geometry that have not been reported so far in the literature. Furthermore, TiO2 nanostructures with significant absorption in visible range of the solar spectrum were obtained by hot injection method and nitrogen doping. The rapid injection and decomposition of Ti-precursor and amine enabled to produce self assembled ball like and multibranched structures with remarkable visible range absorption. Utilization of different concentrations for the precursors provided the possibility of band gap engineering for the anisotropic TiO2 nanostructures.

Benzer Tezler

  1. Akıllı biyomimetik nano hibrit yüzey formlarının tasarımı ve lignoselülozik yüzeyde hidrotermal modifikasyonun incelenmesi

    Design of smart biomimetic nano hybrid surface forms and investigation of hydrotermal modification on the lignocellulosic surface

    DOĞU RAMAZANOĞLU

    Doktora

    Türkçe

    Türkçe

    2020

    Bilim ve TeknolojiKahramanmaraş Sütçü İmam Üniversitesi

    Malzeme Bilimi ve Mühendisliği Ana Bilim Dalı

    DOÇ. FERHAT ÖZDEMİR

  2. Polimetil metakrilat/çinko oksit nanokompozit sentezi ve karakterizasyonu

    Synthesis and characterization of polymethylmethacrilate/zinc oxide nanocomposities

    HAMID GHADIRI

    Yüksek Lisans

    Türkçe

    Türkçe

    2017

    Mühendislik BilimleriGazi Üniversitesi

    Kimya Mühendisliği Ana Bilim Dalı

    PROF. DR. AYLA ALTINTEN

  3. Controlled synthesis and surface modification of titanium dioxide

    Titanyum dioksit?in kontrollü sentezi ve yüzey modifikasyonu

    AYÇA ABAKAY

    Yüksek Lisans

    İngilizce

    İngilizce

    2012

    Metalurji MühendisliğiSabancı Üniversitesi

    Malzeme Bilimi ve Mühendisliği Ana Bilim Dalı

    PROF. DR. YUSUF Z. MENCELOĞLU

  4. Karbon kuantum nokta ve tungsten trioksit katkılı titanyum dioksit fotokatalizörlerin sentezlenmesi ve atık sulardan aromatik aminlerin gideriminde kullanımlarının incelenmesi

    Synthesis of carbon quantum dot and tungsten trioxide dopped with titanium dioxide photocatalysts and investigation of their uses in the removal of aromatic amines from wastewater

    SEVAL ÖZDEMİR

    Yüksek Lisans

    Türkçe

    Türkçe

    2023

    Kimya MühendisliğiYıldız Teknik Üniversitesi

    Kimya Mühendisliği Ana Bilim Dalı

    PROF. DR. AYSEL KANTÜRK FİGEN

    ÖĞR. GÖR. HÜLYA CİVELEK YÖRÜKLÜ

  5. Synthesis of nanocomposites thin films and characterization of mechanical properties

    Nanokompozi̇t i̇nce fi̇lmleri̇n sentezi̇ ve mekani̇k özelli̇kleri̇ni̇n karakteri̇zasyonu

    İSMAİL HAKKI CENGİZHAN KARBAY

    Yüksek Lisans

    İngilizce

    İngilizce

    2014

    Mühendislik Bilimleriİstanbul Teknik Üniversitesi

    Nanobilim ve Nanomühendislik Ana Bilim Dalı

    DOÇ. DR. ESRA ÖZKAN ZAYİM