Lee Hyo In, Park Soo-Jin
Department of Chemistry, Inha University, 100 Inharo, Incheon 22212, Republic of Korea.
J Nanosci Nanotechnol. 2018 Sep 1;18(9):6173-6179. doi: 10.1166/jnn.2018.15628.
In this work, highly ordered TiO2-reduced graphene oxide sheets (TGS) were successfully fabricated via a one-pot solvothermal method with different amounts of graphene oxide (0.01, 0.03, 0.05, and 0.07 g). This was achieved by reacting graphene oxide (GO) layers with titanium isopropoxide as the TiO2 precursor. The TGS exhibited superior efficiency compared to pristine TiO2 and the best results were recorded for the TGS-0.05 sample. The presence of the reduced graphene oxide (rGO) component was determined to be an important factor governing the separation of the photogenerated electron-hole pair via interfacial charge transfer. The significantly increased activity of the TGS under simulated solar light in the degradation of methylene blue (MB) indicates that these materials are promising photocatalysts for efficient water purification.
在本工作中，通过一锅溶剂热法，使用不同量的氧化石墨烯（0.01、0.03、0.05和0.07 g）成功制备了高度有序的TiO₂-还原氧化石墨烯片（TGS）。这是通过使氧化石墨烯（GO）层与作为TiO₂前驱体的异丙醇钛反应来实现的。与原始TiO₂相比，TGS表现出更高的效率，并且TGS-0.05样品记录到了最佳结果。还原氧化石墨烯（rGO）组分的存在被确定为通过界面电荷转移控制光生电子-空穴对分离的重要因素。TGS在模拟太阳光下对亚甲基蓝（MB）降解的活性显著增加，表明这些材料是用于高效水净化的有前景的光催化剂。
