用于太阳能驱动废水处理的纳米薄膜光催化的结构与等离激元协同增强
Combined Structural and Plasmonic Enhancement of Nanometer-Thin Film Photocatalysis for Solar-Driven Wastewater Treatment
AI总结：
本研究通过结合纳米结构玻璃基底与金属等离激元纳米结构，将TiO₂薄膜表面积提高三倍并提升光学吸收率，显著增强了光催化活性，成功降解有机染料及药物污染物，为可扩展的太阳能驱动废水处理提供了新途径。
摘要：
二氧化钛（TiO$_2$）薄膜常用作光催化材料。在此，我们通过将纳米结构玻璃基底与金属等离激元纳米结构相结合，增强了基于TiO$_2$器件的光催化活性。通过周期性锥形网格的纳米级三维图案化，我们使催化剂表面积增加了三倍，从而形成宽带光学吸收体。铝和金的加入激活了结构的等离激元特性，并将TiO$_2$薄膜在可见光和近红外光谱范围内的光学吸收率提高至70%以上。我们通过不同光源下的有机染料降解测试，证明了光催化活性的增强。此外，药物卡马西平（一种常见水污染物）在水溶液中360分钟内减少了高达48%。该方法具有可扩展性，有望实现未来的太阳能驱动废水处理。
英文摘要：
Titanium dioxide (TiO$_2$) thin films are commonly used as photocatalytic materials. Here, we enhance the photocatalytic activity of devices based on TiO$_2$ by combining nanostructured glass substrates with metallic plasmonic nanostructures. We achieve a three-fold increase of the catalyst's surface area through nanoscale three-dimensional patterning of periodic conical grids, which creates a broadband optical absorber. The addition of aluminum and gold activates the structures plasmonically and improves the optical absorption in the TiO$_2$ films to above 70% in the visible and NIR spectral range. We demonstrate the resulting enhancement of the photocatalytic activity with organic dye degradation tests under different light sources. Furthermore, the pharmaceutical drug Carbamazepine, a common water pollutant, is reduced in aqueous solution by up to 48% in 360 minutes. Our approach is scalable and potentially enables future solar-driven wastewater treatment.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
