Iranian Journal of Materials Science and Engineering، جلد ۱۹، شماره ۳، صفحات ۱-۱۳

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عنوان انگلیسی Structural and Optical Characterization of ZnO-Graphene Nanocomposite Quantum Dots
چکیده انگلیسی مقاله
In this research, zinc oxide quantum dots and graphene nanocomposites were synthesized via two different methods; In the first (direct) method, ZnO-graphene Nanocomposites were made mixing the synthesized zinc oxide and graphene. In the second (indirect) method, zinc nitrate, graphene, and sodium hydroxide were used to made ZnO-graphene Nanocomposites. XRD, FTIR and Raman spectroscopy analyses were used for phase and structural evaluations. The morphology of the nanocomposites w:::as char:::acterized by SEM. The specific surface area and porosity of the samples were characterized by BET analysis. The optical properties of the samples were investigated by photoluminescence and ultraviolet-visible spectroscopy analyses. Results showed that using graphene, increased the photoluminescence property and shifted the photoluminescence spectrum of the composites towards the visible light spectrum. The photoluminescence of the synthesized graphene-zinc oxide composite, in the visible light region, was closer to white light than that of pure zinc oxide. According to the results of BET test, the nanocomposite synthesized by direct method had a higher surface area (25.7 m2.g-1) and a higher porosity (0.32 cm3.g-1) than the nanocomposite synthesized by the indirect method with a specific surface area of (16.5 m2.g-1) and a porosity of 0.23 cm3.g-1).
کلیدواژه‌های انگلیسی مقاله Quantum dots,Nanocomposite,Graphene,Zinc oxide,Photocatalyst

نویسندگان مقاله | Saba Payrazm
Department of Materials Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran

| Saeid Baghshahi
Department of Materials Science and Engineering, Faculty of Engineering, Imam Khomeini International University, Qazvin, Iran

| Zahra Sadeghian
Research Institute of Petroleum Industry (RIPI), Tehran, Iran

| Amirtaymour Aliabadizadeh
Department of Materials Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran

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کد مقاله (doi)
زبان مقاله منتشر شده en
موضوعات مقاله منتشر شده Ceramics
نوع مقاله منتشر شده Research Paper
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