中文摘要：

为提高纳米材料Bi2WO6的光催化活性，采用改进的Hummers法制备了高比表面积的氧化石墨烯rGO，并通过一定量的Ag^＋来提高光生电子的转移速率，成功制备了复合光催化材料A矿rGO／Bi2WO6，通过XRD、SEM、BET等手段对所合成催化剂的形貌结构进行考察，并以罗丹明B为目标降解物对其脱氮效果进行评价。结果表明：Ag^＋以及GO的加入影响了Bi2WO6二维纳米片的自组装，明显改变了催化剂的结构形貌、增大了催化剂的比表面积、抑制了光生电子的复合，从而提高了光催化性能。当光催化反应在500W氙灯光照时最佳反应条件为：x（石墨烯）=5％，x（Ag^＋）=10％，m（催化剂）=0．05g，c（罗丹明B）=0．5×10^-5mol／L，V（H2O2）=3mL时最高降解率达99．5％，

英文摘要：

In order to improve the photocatalysis activities of nano-Bi2 WO6 ,Graphene（rGO）oxide with high specific surface area was prepared by modified Hummers method firstly.And then,nano-Bi2WO6 was modified by rGO and Ag＋ .The modified catalysts were characterized by XRD,SEM and BET.The denitrification activities of the catalysts were evaluated by choosing rhodamine B as the target corn pound.The results indicated that codoping of Ag＋/rGO has effects on the self-assembly of the cata- lysts,changes their microstructures, increases the specific surface area, inhibits the combination of photoelectrons.Therefore,the activities of the catalysts lamp is 500 W,under the mol/L of rhodamine B, 3 improve obviously.While the power of xenon optimal conditions, that is, 5 % concentration of rGO, 10 % of Ag＋ , 0.5 ×10^-5 mL of H2O2 and 0.05 g of the catalyst,the degradation rate is 99.5%.