In-situ synthesis of Z-scheme Ag2CO3/Ag/AgNCO heterojunction photocatalyst with enhanced stability and photocatalytic activity
In-situ synthesis of Z-scheme Ag2CO3/Ag/AgNCO heterojunction photocatalyst with enhanced stability and photocatalytic activity
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DOI：
10.1016/j.apsusc.2018.09.059
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发表时间：
2019-01-15
影响因子：
6.7
通讯作者：
Chen, Gang
中科院分区：
文献类型：
--
作者：
Wu, Xuesen;Hu, Yidong;Chen, Gang
制备了一种新型的Ag 2CO 3/Ag/AgNCO Z型三元异质结，该异质结具有优异的可见光催化性能。结果表明，在Ag 2CO 3/Ag/AgNCO体系中，O-2（-）和H（+）是光催化降解罗丹明B（RhB）的活性物质。与Ag 2CO 3和AgNCO相比，Ag 2CO 3/Ag/AgNCO的光催化活性提高的主要原因是其界面电荷转移阻力小和吸附能力强。此外，通过对能带结构的讨论，证实了Z-模式光催化机理。这项工作可以为设计和制造具有Z-方案结构的先进材料提供新的见解，以有效处理废水中的持久性污染物。
A novel ternary Ag2CO3/Ag/AgNCO Z-scheme heterojunction with excellent visible-light-driven photocatalytic performance was fabricated. The % O-2(-) and, h(+) were proved to be the photocatalytic active substances for the degradation of Rhodamine B (RhB) in Ag2CO3/Ag/AgNCO. Compared to pristine Ag2CO3 and AgNCO, the enhanced photocatalytic activities of Ag2CO3/Ag/AgNCO could be attributed to the low resistance for interfacial charge transfer and desirable absorption capability. In addition, the Z-scheme photocatalytic mechanism is proved by the discussion of the band structure. This work could offer a new insight into the design and fabrication of advanced materials with Z-scheme structures for the efficient treatment of persistent pollutants in wastewater.