摘要
以废弃炉渣为原料制备了光催化剂GN,通过催化降解不同浓度的罗丹明B模拟废水,考察了该催化剂的光催化活性。通过GN的红外吸收光谱和紫外吸收光谱,对反应机理进行了初步探讨,拟合了GN催化降解不同浓度模拟废水的反应动力学方程。结果表明:光催化剂GN对罗丹明B模拟废水有很高的降解效率,能将罗丹明B分子转化为小分子有机物。光催化氧化降解的不同阶段可以用不同的动力学方程表征,并且随着模拟废水的初始浓度的不同而不同。
Ti-bearing blast furnace slag was used to prepare photocatalyst GN. The photocatalytic activity was examined via rhodamine B degradation in different concentrations,and the reaction mechanism was primarily discussed through UV-vis absorption and infrared spectra. Equations for the reaction kinetics in different concentrations were obtained. The photocatalyst GN showed a high activity for rhodamine B degradation to organics with small molar mass. Also,the photocatalyzed degradation in different phases could be expressed with different equations which varied with the concentrations in waste water.
出处
《化工进展》
CAS
CSCD
北大核心
2010年第6期1075-1079,共5页
Chemical Industry and Engineering Progress
关键词
炉渣
光催化剂
罗丹明B
降解机理
反应动力学
furnace slag
photocatalyst
rhodamine B
degradation mechanism
reaction kinetics
