Designing Visible‐Light‐Driven Z‐scheme Catalyst 2D g‐C3N4/Bi2MoO6: Enhanced Photodegradation Activity of Organic Pollutants
Designing Visible‐Light‐Driven Z‐scheme Catalyst 2D g‐C3N4/Bi2MoO6: Enhanced Photodegradation Activity of Organic Pollutants
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DOI：
10.1002/pssa.201800520
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发表时间：
2018-08
期刊：
影响因子：
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通讯作者：
Kaixiang Xia;Hanxiang Chen;Mao Mao-Mao;Zhigang Chen;Fan Xu;Jianjian Yi;Yahui Yu;X. She;Hui Xu-Hui-X
中科院分区：
文献类型：
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作者：
Kaixiang Xia;Hanxiang Chen;Mao Mao-Mao;Zhigang Chen;Fan Xu;Jianjian Yi;Yahui Yu;X. She;Hui Xu-Hui-X
光催化技术是解决环境问题的一项很有前途的技术。电荷分离效率和氧化能力是决定光催化剂性能的重要因素。本论文采用2D g-C3 N4对Bi 2 MoO 6进行原位水热改性，设计了可见光驱动的Z-型催化剂。这种结构的原理是利用各组分表面相反的电荷，保持光生电子和空穴的强氧化还原能力，有效防止光生载流子的复合。与纯Bi 2 MoO 6相比，复合材料的光降解性能显著提高。对反应动力学和可能的反应机理进行了研究和分析。证明了紧密全固态Z型结可以快速分离光生载流子。该工作为寻找可控合成路线获得新型高效可见光驱动Z-型光催化剂提供了思路。
Photocatalysis is a promising technology to solve the environment problems. Charge separation efficiency and oxidation capability are both vital factor determining the performance of photocatalysts. In this work, 2D g‐C3N4 is applied to modify Bi2MoO6 via an in situ hydrothermal method to design visible‐light‐driven Z‐scheme catalyst. The principle of this structure is to use the opposite surface charge of each component, maintaining the strong redox ability of photogenerated electrons and holes, preventing the recombination of photogenerated carrier effectively. As expected, the photodegradation performance of as‐prepared composites enhances dramatically compared with the pure Bi2MoO6. Afterward, kinetics and probable reaction mechanism are investigated and analyzed. It is proved that photogenerated carrier can be separated rapidly by tightly all‐solid‐state Z‐scheme junction. This work can provide a sight for finding controllable synthesis route of obtaining newly efficient visible‐light‐driven Z‐scheme photocatalysts.