【摘要】 本文采用微纳加工方法制备了负载高密度Ag-Cu纳米颗粒的N掺杂TiO₂纳米棒阵列样品.通过TiO₂的N掺杂,可将其吸光范围调控至与Ag纳米颗粒的等离激元吸收频率相匹配的波段,从而实现复合材料中肖特基结与共振能量转移过程的协同作用.与此同时,Cu纳米颗粒可以为CO₂还原提供活性位点.在全谱光照射下,复合样品光催化CO₂还原的活性显著提高,CH₄生成速率可达720更多还原

【Abstract】 Photocatalytic reduction of CO₂ into various types of fuels has attracted great interest, and serves as a potential solution to addressing current global warming and energy challenges. In this work, Ag-Cu nanoparticles are densely supported on N-doped TiO₂ nanowire through a straightforward nanofabrication approach. The range of light absorption by N-doped TiO₂ can be tuned to match the plasmonic band of Ag nanoparticles, which allows synergizing a resonant energy transfer process with the Schottky junction. Meanwhile, Cu nanoparticles can provide active sites for the reduction of CO₂ molecules. Remarkably, the performance of photocatalytic CO₂ reduction is improved to produce CH₄ at a rate of 720 μmol·g^-1·h^-1under full-spectrum irradiation.更多还原