摘要
采用密闭法、超声剥离制备氧化石墨烯,而后采用水热法在还原氧化石墨烯的同时将商用级P25(二氧化钛)负载在高比表面积的还原氧化石墨烯上;用氙灯模拟太阳光的环境下,改变H_2O_2含量和pH催化降解化工污染物氯化苄,探讨该反应的最佳条件。利用紫外可见分光光度计确定反应过程中的浓度变化,以确定降解趋势;结果表明在H_2O_2含量为0.9 mol·L^(-1)、pH值在5附近时有最佳反应条件。
Graphene oxide was prepared by pressurized oxidation method with the help of ultrasonic exfoliation. The graphene oxide was reduced with the help of the loading of the commercial nano titanium dioxide （P25） using the hydrothermal method to obtain the RGO/P25 photocatalyst. Efficiency of photocatalysts was evaluated by the state of photodegradation of benzyl chloride with different pH and H2O2 additive amount under simulated solar light irradiation to determine the optimal photodegradation conditions. Uv-vis spectrophotometer was used to determine the concentration change in order to determine the degradation trend. The optimal photodegradation conditions was determined that that pH value is 8 and the concentration of H2O2 is 0.9 mol·L^-1.
出处
《广东化工》
CAS
2017年第15期7-9,46,共4页
Guangdong Chemical Industry
基金
东北林业大学校级大学生创新性实验项(No.20150225161)
关键词
二氧化钛
石墨烯
氯化苄
光催化
titanium dioxide
grapheme
benzyl chloride
photocatalysis
