Photocatalysis Coupled with Thermal Effect Induced by SPR on Ag-Loaded Bi2WO6 with Enhanced Photocatalytic Activity
Photocatalysis Coupled with Thermal Effect Induced by SPR on Ag-Loaded Bi2WO6 with Enhanced Photocatalytic Activity
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DOI：
10.1021/jp309719q
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发表时间：
2012-11
影响因子：
3.7
通讯作者：
Zhijie Zhang;Wenzhong Wang;Erping Gao;Songmei Sun;Ling Zhang
中科院分区：
文献类型：
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作者：
Zhijie Zhang;Wenzhong Wang;Erping Gao;Songmei Sun;Ling Zhang
研究了Bi_2WO_6光催化活性的温度依赖性，结果表明，较高的反应温度有利于光催化过程的进行。另一方面，众所周知，在银（Ag）纳米颗粒表面上以明确定义的波长激发局域等离子体激元会引起巨大的热效应。因此，预计Bi2WO6的光催化活性将得到提高，如果它与银的表面等离子体共振（SPR）诱导的热效应耦合。在这里，这个想法得以实现。模拟太阳光下的光催化活性，苯酚的分解监测，表明Ag负载可以显着提高Bi2WO6的光催化活性。银纳米粒子的电子效应和表面等离子体共振诱导的热效应产生协同效应，从而提高了银纳米粒子的光活性。这项工作提供了一些见解的合理设计和发展的高…
The temperature dependence of the photocatalytic activity of Bi2WO6 was studied and the results showed that a higher reaction temperature can facilitate the photocatalytic process. On the other hand, it is well-known that the excitation of localized plasmon polaritons at well-defined wavelengths on the surface of silver (Ag) nanoparticles causes a tremendous thermal effect. Thus, it is expected that the photocatalytic activity of Bi2WO6 would be enhanced if it was coupled with the thermal effect induced by surface plasmon resonance (SPR) of Ag. Herein, this idea is realized. The measured photocatalytic activity under simulated solar light, monitored by the decomposition of phenol, demonstrated that Ag loading could significantly enhance the photocatalytic activity of Bi2WO6. The enhanced photoactivity can be ascribed to the synergistic effect brought by electronic effect of Ag nanoparticles and thermal effect induced by SPR. This work provides some insights into the rational design and development of high...