Enhanced photocatalytic activity of graphitic carbon nitride/carbon nanotube/Bi2WO6 ternary Z-scheme heterojunction with carbon nanotube as efficient electron mediator
Enhanced photocatalytic activity of graphitic carbon nitride/carbon nanotube/Bi2WO6 ternary Z-scheme heterojunction with carbon nanotube as efficient electron mediator
复制标题
以碳纳米管作为高效电子介体增强石墨氮化碳/碳纳米管/Bi2WO6三元Z型异质结的光催化活性
DOI：
10.1016/j.jcis.2017.10.074
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发表时间：
2018-02-15
影响因子：
9.9
通讯作者：
Chen, Min
中科院分区：
文献类型：
--
作者：
Jiang, Deli;Ma, Wanxia;Chen, Min
全固态Z型异质结因其强大的电荷分离和转移能力而在光催化领域备受关注。在本研究中，由石墨氮化碳（CN）纳米片、碳纳米管（CNT）和Bi2WO6（BWO）纳米片构建的全固态三元Zscheme异质结，其中CNT用作电子介体。与原始的 g-C3N4、Bi2WO6、CNT/BWO、CNT/CN 和 CN/BWO 相比，CN/CNT/BWO 三元 Zscheme 异质结对盐酸四环素 (TC) 的降解表现出增强的光催化活性。光催化活性的显着提高主要归因于形成的CNT介导的Zscheme异质结，它促进了光生电子空穴对的分离和转移。我们的工作为以 CNT 作为电子介体的全固态 Zscheme 异质结提供了合理的设计，以实现高效光催化。 (C) 2017 Elsevier Inc. 保留所有权利。
Allsolid-state Zscheme heterojunction has attracted much attention in photocatalytic field because of its strong ability in charge separation and transfer. In the present study, allsolid-state ternary Zscheme heterojunction constructed by graphitic carbon nitride (CN) nanosheet, carbon nanotube (CNT), and Bi2WO6 (BWO) nanosheet, in which CNT was employed as the electron mediator. The CN/CNT/BWO ternary Zscheme heterojunction shows the enhanced photocatalytic activity towards the degradation of tetracycline hydrochloride (TC) as compared to the pristine g-C3N4, Bi2WO6, CNT/BWO, CNT/CN, and CN/BWO. The significantly improved photocatalytic activity can be mainly ascribed to the formed CNT-mediated Zscheme heterojunction, which facilitates the separation and transfer of photo generated electronhole pairs. Our work provides a rational design of allsolid-state Zscheme hetero-junction with CNT as the electron mediator for highly efficient photocatalysis. (C) 2017 Elsevier Inc. All rights reserved.