Synthesis and characterization of graphene
مقدم أطروحة جامعية
مشرف أطروحة جامعية
Ali, Salam Husayn
Wahhab, Hilal S.
الجامعة
الجامعة التكنولوجية
الكلية
-
القسم الأكاديمي
قسم العلوم التطبيقية
دولة الجامعة
العراق
الدرجة العلمية
دكتوراه
تاريخ الدرجة العلمية
2013
الملخص الإنجليزي
Graphene, a single atomic layer of hexagonally arranged sp2-hybridized carbon atoms, with a thickness of only 0.34 nm, exhibits unique properties.
The current interest in graphene can be attributed to three main reasons.
Firstly, various forms of graphite, nanotubes, buckyballs and others can all be viewed as derivatives of graphene.
Secondly, the scalability of graphene devices to nanodimensions makes it a promising candidate for applications in nano-devices.
Thirdly, its electron transport properties are described by the Dirac equation which allows access to quantum electrodynamics in a simple condensed matter experiment.
Among the different methods to produce graphene sheets by exfoliation of graphite, the electrochemical route has been very scarcely investigated.
The electrochemical exfoliation of graphite represents a simple one-step method to produce graphene sheets in ionic liquid/water mixtures where hydroxyl and oxygen radicals produced by anodic oxidation of water start the oxidation of the edge planes of graphite, facilitating intercalation of an ions from the ionic liquid.
The resulting graphene samples were characterized by, light optical microscopy, TEM, XRD, Raman spectroscopy, Ultraviolet and visible absorption spectroscopy.
The XRD pattern of graphene film contains a sharp and intensive peak at 29 = 26.1782°.
The basal spacing of the graphite was increased from 3.35A to 4.301 A in the reduction of graphene oxide.
This result indicates that the direct reaction of graphite particles with aqueous solution can be proposed as another route for the exfoliated graphite having excellent physical properties.
Raman spectroscopy is employed to study various samples.
Our calculations show that the, the lateral sizes La = 6.324nm, The intensity ratio /G//2D of the product is ~1.59 and I(D)/I(G) ratio ~0.6957.
As in the absorption spectrum has been calculated energy gap delegation was identical to our theoretical in Annex.
التخصصات الرئيسية
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
al-Husayn, Adi Abd M.. (2013). Synthesis and characterization of graphene. (Doctoral dissertations Theses and Dissertations Master). University of Technology, Iraq
https://search.emarefa.net/detail/BIM-412911
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
al-Husayn, Adi Abd M.. Synthesis and characterization of graphene. (Doctoral dissertations Theses and Dissertations Master). University of Technology. (2013).
https://search.emarefa.net/detail/BIM-412911
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
al-Husayn, Adi Abd M.. (2013). Synthesis and characterization of graphene. (Doctoral dissertations Theses and Dissertations Master). University of Technology, Iraq
https://search.emarefa.net/detail/BIM-412911
لغة النص
الإنجليزية
نوع البيانات
رسائل جامعية
رقم السجل
BIM-412911
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر