The synthesis of Bi2S3/2D-Bi2WO6 composite materials with enhanced photocatalytic activities
The synthesis of Bi2S3/2D-Bi2WO6 composite materials with enhanced photocatalytic activities
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具有增强光催化活性的Bi2S3/2D-Bi2WO6复合材料的合成
DOI：
10.1016/j.jallcom.2018.11.397
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发表时间：
2019-04-05
影响因子：
6.2
通讯作者：
Jiang, Kai
中科院分区：
文献类型：
--
作者：
Xu, Fang;Xu, Chaoya;Jiang, Kai
采用离子交换法制备了Bi 2S 3/2D-Bi 2 WO 6复合材料。通过改变硫代乙酰胺（TAA）的用量可以调节Bi 2S 3纳米粒子的质量比。对于Bi 2S 3/2D-Bi 2 WO 6复合材料，Bi 2S 3纳米颗粒分散在Bi 2 WO 6纳米片的表面。以罗丹明B（RhB）为目标化合物，在可见光下考察了其光催化活性。BWS-2对RhB的光降解率接近完全，而Bi_2WO_6纳米片对RhB的光降解率只有67%。光学和电化学测试表明，Bi_2S_3/2D-Bi_2 WO_6复合材料具有延长载流子寿命、提高载流子分离效率和降低载流子复合效率的优点。这些结果赋予了Bi 2S 3/2D-Bi 2 WO 6复合材料高的光催化活性。(C)2018爱思唯尔B. V.保留所有权利。
Bi2S3/2D-Bi2WO6 composite materials which combined 2D-Bi2WO6 with Bi2S3 nanoparticles were prepared via ion exchange method. The mass ratio of Bi2S3 nanoparticle could be modulated by changing the quantity of thioacetamide (TAA). For Bi2S3/2D-Bi2WO6 composite materials, Bi2S3 nanoparticles dispersed on the surface of Bi2WO6 nanosheets. The photocatalytic activity was evaluated by photodegradation rhodamine B (RhB) under visible light. RhB was photodegraded nearly completely by BWS-2, while only 67% was photodegraded by Bi2WO6 nanosheet after 5 h' visible light irradiation. Based on the optical and electrochemical measurements, Bi2S3/2D-Bi2WO6 composite materials have prolonged carriers' lifetime, improved carriers' separation efficiency and decreased carriers' recombination efficiency. These results endow Bi2S3/2D-Bi2WO6 composite materials with high photocatalytic activities. (C) 2018 Elsevier B.V. All rights reserved.