This study investigates the CO sensing properties of nanostructured TiO₂ thin film gas sensors fabricated with colloidal templates using different sizes of polymer spheres. Compared to plain films, the nanostructured films show enhanced gas sensing in the form of greater sensitivity and a faster response. More interestingly, the use of colloidal templates with smaller spheres (300 nm in diameter) leads to close-packed nanostructured TiO₂ thin films with very large-scale uniformity and a more pronounced improvement in CO sensing compared to the use of larger spheres (1 μm in diameter). This result suggests that an understanding of the sphere size effects on the gas sensing properties of nanostructured TiO₂ thin films created by colloidal templating is important in the development of these films for actual applications.

这项研究调查使用胶体模板使用不同尺寸的聚合物球体制造的纳米结构TiO ₂薄膜气体传感器的CO感测特性。与普通膜相比，纳米结构膜以更高的灵敏度和更快的响应形式显示出增强的气体感应。更有趣的是，与较小的球体（直径300 nm）一起使用胶体模板会导致密排的纳米结构TiO ₂薄膜具有非常大的规模均匀性，与使用较大的球体相比，CO感测有显着改善（1直径（μm）。该结果表明，对球形尺寸对纳米结构TiO ₂的气敏特性的影响的理解。 在实际应用中，通过胶体模板制作的薄膜对于这些薄膜的开发非常重要。