Page 110 - 《精细化工》2022年第8期

·1610· 精细化工 FINE CHEMICALS 第 39 卷

可以看出，所构建的 TiO 2 /WO 3 /Bi 2 WO 6 半导体复合
结构有利于空穴的转移，提高了电子的注入速率，
进而极大地增强了光催化剂的活性。等离子体改性
对提升复合材料的光催化活性有着促进作用，经等
离子体改性处理后，三元复合材料的吸收边向可见
光红移，可见光响应增强，放电电压的增加有助于
提高复合材料的光催化活性。AP1.1、AP1.0、AP0.9
三元 复合材料光降解速率常数分别为 0.0319、
–1
0.0203、0.0197 min ，均高于未处理的原始样品。其
中，AP1.1 的降解速率常数分别是未处理 TiO 2 /WO 3 /
Bi 2 WO 6 和 WO 3 /Bi 2 WO 6 的 2.2 和 3.9 倍。等离子体
改性 TiO 2 /WO 3 /Bi 2 WO 6 复合光催化剂对于利用太阳
光能降解废水中的有机污染物有潜在的利用价值。

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