دراسة تحضير وتشخيص أوكسيد الكرافين المختزل بوساطة مستخلص الشاي الاحمر

الموضوعات

علوم بحتة وطبيعية

روابط وملفات

التعريف والنوع

رقم الوثيقة

fdd15a26-b3e3-4f09-a91a-308238323981

رقم العقد

0

نوع الوسائط

Crawler

نوع المحتوى

الرسائل العلمية

صيغة المصدر

رسائل ماجيستير

نوع الملف

pdf text

أسماء الملفات

2086522_1.pdf

بيانات النشر

ألقاب المؤلفين

[{"name_ar":"حسن عباس حبيب","title_ar":"اشراف","title_en":"Supervision"},{"name_ar":"سرى علي كريم","title_ar":"اعداد","title_en":"Preparation"}]

اللغة

Arabic

المصدر والدورية

اسم المصدر

دراسة تحضير وتشخيص أوكسيد الكرافين المختزل بوساطة مستخلص الشاي الاحمر

المحتوى والصفحات

عدد الصفحات

0

ترجمة الملخص

It was prepared graphene oxide-mediated Hummersmodified the way in which splatted by oxidizing graphite andreducing it later to the reduce graphene oxide at room temperature using an aqueous extract of red tea (hibiscus) Hibiscus Sabdarriffa L according to the principles of green chemistry.Been proven formation reduce graphene oxide good characteristics and it brokered a number of techniques which spectroscopy visible radiation absorption -ultraviolet and infrared spectroscopy and spectroscopic X-ray diffraction technique thermal gravimetric and technical analysis of the atomic force microscope andtechnology electron microscope scanner and spectroscopy sparkle and optical measurements of electrical Altosalih.It found that there is a displacement of the absorption greatest value toward the wavelength greatest amount = 660 nm, and calculating the energy value of the bandgap graphene oxide EgGO= 5.849 ev and reduce graphene oxide StenotypistE gRGO=4.806 ev has been removed oxygen atoms from graphene oxide and disappearance the carbonyl group of the oxide.There is a difference in theforms of the constituent layers each of graphene oxide in the amount of 318.060 and 506.686 dioxide graphene Stenotypist also differs granular nanoparticles sizes, enjoys graphene oxideStenotypist electric Boissalah. Used a technique of ultrasonic waves to demonstrate the impact of various factors on graphen oxide for 150 minutes and in particular all of the acid function and concentration, temperature and solubility.It found that speed is oxide increases with the acidic function, where it was noted that the increase in the concentration of extract led to an increase in the amount of reduce graphene oxide , also noted ongoing in the amount of RGO formed with increasing temperature increase at different times,Where the absorbance measurement of these compounds using spectroscopy visible rays -ultraviolet at wavelength 660 nm, and included these solvents distilled water, ethanol, 2. propanol, n-hexane, benzene, xylene, chlorofom, diethyl ether, coloring, methanol, acetone , 2-Hyderofuoran. Where solubility inspection of each of the GO and RGO largest amount dissolving them in a solvent each of the above mentioned solvents separately been deduced solubility using calibration curves showing the relationship between the absorbance at 660 nm and concentration. And it found that the higher solubility of the graphene oxide was 1.78 micrograms / ml in distilled water and a higher solubilityof the reduce graphene oxide was 4.1 Mg/ mL in chloroform.

إشراف وإعداد

الإشراف

حسن عباس حبيب

الإعداد

سرى علي كريم

الاقتباسات الببليوغرافية