Synthesis of hollow particles for photocatalytic water-splitting using bacterial templates

为了提高光催化活性，重要的是提高在光照射时产生的电子和空穴的分离效率。本研究以微生物细胞为模板，提出了一种制备空心光催化粒子的新方法，并对其光催化活性进行了研究。结果，使用酵母细胞负载铂纳米颗粒作为模板的中空二氧化钛颗粒的合成已经成功，并且发现光催化活性是在其表面上负载铂纳米颗粒的致密颗粒的光催化活性的约4倍。

To improve the photocatalytic activity it is important to improve the separation efficiency of the electron and the hole generated at the light irradiation. In this study, the new synthesis method for the hollow photocatalytic particles supported precious metal nanoparticles uniformly and densely onto their inner surface using the microbial cells as templates has been proposed, and the photocatalytic activity was investigated. As a result, the synthesis of hollow titania particles using yeast cells supported platinum nanoparticles as templates has been succeeded, and the photocatalytic activity was found to be about four times as high as that of dense particles supported platinum nanoparticles onto their surface.