【摘要】 通过高温热解三聚氰胺制备石墨相氮化碳,再利用水热法合成不同Bi₂WO₆含量的Bi₂WO₆-CN复合材料体系并进行了光催化降解实验,利用一系列表征方法对其结构表征。对Bi₂WO₆的复合量、催化剂投放量以及光照强度等对光催化性能的影响因素进行了考察。结果表明,Bi₂WO₆与g-C₃N₄成功复合到了一起,形成异质结,且明显提高了光催化性能。在Bi₂WO₆的复合量、催化剂投放量以及光照强度分别为60%、100mg和光距15cm的条件下,制备的改性石墨相氮化碳对甲苯的光催化降解率可达72%。更多还原

【Abstract】 The graphite phase carbon nitride is prepared by pyrolysis of melamine at high temperature, and the Bi₂WO₆-CN composite systems with different Bi₂WO₆ contents are synthesized by hydrothermal method. A series of characterization methods are used to characterize the structure.The influencing factors on the photocatalytic performance are researched, such as the composite amount of Bi₂WO₆, the amount of catalyst and the light intensity. The results show that the Bi₂WO₆ and g-C₃N₄ are successfully combined to form a heterojunction, and the photocatalytic performance has obviously improved. When the composite amount of Bi₂WO₆, catalyst dosage and light distance is 60%, 100 mg and 15 cm respectively, the modified graphite phase carbon nitride’s photocatalytic degradation rate of toluene can reach 72%.更多还原