Taufik Ardiansyah, Yoko Akira, Han Chunli, Ohara Satoshi, Adschiri Tadafumi
WPI - Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi, 980-8577, Japan.
International Center for Synchrotron Radiation Innovation Smart (SRIS), Tohoku University, Aramaki Aza-Aoba, Aoba-ku, Sendai, 980-8572, Japan.
Small. 2025 Apr;21(15):e2412727. doi: 10.1002/smll.202412727. Epub 2025 Mar 6.
Removing volatile organic compounds (VOCs) from the environment via photocatalytic reactions is highly effective for achieving clean air. While Pt deposition on TiO₂ surfaces is recognized as a viable catalytic method, understanding Pt interaction, dispersion, and facet optimization remain incomplete, leading to suboptimal performance and cost inefficiencies. This study investigates Pt adsorption on rutile TiO surfaces, focusing on the (101) and (110) facets. It reveals that Pt attachment is strongly influenced by surface facet and Pt ion species. The (101) facet exhibits superior adsorption for Pt ions, such as Pt(OH) and PtCl , due to its higher surface energy that leads to higher reactivity for adsorption of Pt species. The photocatalytic result reveals that the higher Pt(OH) adsorption on (101) surface facet exhibits higher photocatalytic reaction for toluene degradation. Moreover, the strong Pt(OH) adsorption on (101) facet increases Pt dispersibility that leads to increased photocatalytic performance. These findings suggest the control of facet orientation of TiO and adsorb Pt ion are important for optimizing Pt deposition, which will benefit future photocatalytic research and development.
通过光催化反应从环境中去除挥发性有机化合物（VOCs）对于实现清洁空气非常有效。虽然在TiO₂表面沉积Pt被认为是一种可行的催化方法，但对Pt的相互作用、分散和晶面优化的理解仍不完整，导致性能欠佳和成本效率低下。本研究调查了Pt在金红石TiO表面的吸附情况，重点关注（101）和（110）晶面。研究表明，Pt的附着受到表面晶面和Pt离子种类的强烈影响。（101）晶面对Pt离子（如Pt(OH)和PtCl）表现出优异的吸附性能，这是由于其较高的表面能导致对Pt物种的吸附具有更高的反应活性。光催化结果表明，（101）表面晶面对Pt(OH)的较高吸附表现出对甲苯降解更高的光催化反应。此外，（101）晶面对Pt(OH)的强烈吸附增加了Pt的分散性，从而提高了光催化性能。这些发现表明，控制TiO的晶面取向和吸附Pt离子对于优化Pt沉积很重要，这将有利于未来的光催化研究与开发。
