| 5. | A Green and Direct Synthesis of Graphene Oxide Encapsulated TiO2 Core/Shell Structures with Enhanced Photoactivity Original Research Article Chemical Engineering Journal, Available online 2 July 2013, Pages Hui Liu, Xiaonan Dong, Xichao Wang, Chaochao Sun, Junqi Li, Zhenfeng Zhu
Graphical abstractIn this paper, graphene oxide (GO) encapsulated TiO2core/shell composite microspheres with enhanced photo-activity were synthesized and characterized carefully. The encapsulated process of this study is mainly relies on the direct dehydration condensation reaction between the oxygen-containing functional groups (-COOH) on the surface of graphene oxides and the hydroxyl groups (-OH) on TiO2microspheres surface. The photocatalytic activity of the as-prepared samples was evaluated by photocatalytic decolorization of Rhodamine B (Rh B) aqueous solution at ambient temperature under both UV and visible light irradiation. TEM measurements reveal that the diameter of the as-prepared TiO2@ graphene oxide core/shell composite microsphere is about 850 nm, while the thickness of the shell is about 5-10 nm. The photoatalytic degradation results show that the encapsulated TiO2core/shell structures exhibited an enhanced photocatalytic and excellent recyclability property under both UV and visible light for the degradation of RhB.
 | | | | 9. | Manganese Oxide/Graphene Oxide Composites for High-Energy Aqueous Asymmetric Electrochemical Capacitors Original Research Article Electrochimica Acta, Available online 2 July 2013, Pages Charl J. Jafta, Funeka Nkosi, Lukas le Roux, Mkhulu K. Mathe, Mesfin Kebede, Katlego Makgopa, Yang Song, Dennis Tong, Munetaka Oyama, Ncholu Manyala, Shaowei Chen, Kenneth I. Ozoemena | | | | 12. | Thermally reduced graphite and graphene oxides as positive electrodes in vanadium redox flow batteries Original Research Article Nano Energy, Available online 2 July 2013, Pages Zoraida González, Cristina Botas, Clara Blanco, Ricardo Santamaría, Marcos Granda, Patricia Álvarez, Rosa Menéndez
Graphical abstractTwo graphene materials obtained from the thermal reduction of a graphite oxide or a graphene oxide are investigated as positive electrodes in Vanadium Redox Flow Batteries. The electrochemical performance of TRGO, obtained in a single step, was much better than that of TRGrO. This is attributed to the better quality of the restored 2D graphitic structure, which implies a higher electrical conductivity, and to the presence of a large amount of reactive edges in the graphene sheets.
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