El-Shafai Nagi M, El-Khouly Mohamed E, El-Kemary Maged, Ramadan Mohamed S, Masoud Mamdouh S
Department of Chemistry, Faculty of Science, Alexandria University Alexandria Egypt.
Institute of Nanoscience and Nanotechnology, Kafrelsheikh University Kafr El-Sheikh 33516 Egypt.
RSC Adv. 2018 Apr 10;8(24):13323-13332. doi: 10.1039/c8ra00977e. eCollection 2018 Apr 9.
The fabrication and characterization of graphene oxide (GO) nanosheets and their reaction with FeO and ZrO metal oxides to form two nanocomposites, namely graphene oxide-iron oxide (GO-FeO) and graphene oxide-iron oxide-zirconium oxide (GO-FeO@ZrO), have been examined. The fabricated nanocomposites were examined using different techniques, transmission electron microscopy, X-ray diffraction, zeta potential measurement and Fourier transform infrared spectroscopy. Compared to GO, the newly fabricated GO-FeO and GO-FeO@ZrO nanocomposites have the advantage of smaller band gaps, which result in increased adsorption capacity and photocatalytic effects. The results also showed the great effect of the examined GO-metal oxide nanocomposites on the decomposition of cationic rhodamine B dye, as indicated by steady-state absorption and fluorescence, time correlated single photon counting and nanosecond laser photolysis techniques. The antibacterial activity of the fabricated GO and GO-metal oxides has been studied against Gram-positive and Gram-negative bacteria.
研究了氧化石墨烯（GO）纳米片的制备与表征，以及它们与FeO和ZrO金属氧化物反应形成两种纳米复合材料，即氧化石墨烯-氧化铁（GO-FeO）和氧化石墨烯-氧化铁-氧化锆（GO-FeO@ZrO）的情况。使用不同技术对制备的纳米复合材料进行了检测，包括透射电子显微镜、X射线衍射、zeta电位测量和傅里叶变换红外光谱。与GO相比，新制备的GO-FeO和GO-FeO@ZrO纳米复合材料具有带隙较小的优势，这导致吸附能力和光催化效果增强。稳态吸收和荧光、时间相关单光子计数和纳秒激光光解技术表明，结果还显示了所检测的GO-金属氧化物纳米复合材料对阳离子罗丹明B染料分解的显著效果。研究了制备的GO和GO-金属氧化物对革兰氏阳性菌和革兰氏阴性菌的抗菌活性。
