Light‐driven microswimmers have garnered attention for their potential use in various applications, such as environmental remediation, hydrogen evolution, and targeted drug delivery. Janus hollow mesoporous TiO₂/Au (JHP–TiO₂–Au) microswimmers with enhanced swimming speeds under low‐intensity ultraviolet (UV) light are presented. The swimmers show enhanced swimming speeds both in presence and absence of H₂O₂. The microswimmers move due to self‐electrophoresis when UV light is incident on them. There is a threefold increase in speed of JHP–TiO₂–Au microswimmers in comparison with Janus solid TiO₂/Au (JS–TiO₂–Au) microswimmers. This increase in their speed is due to the increase in surface area of the porous swimmers and their hollow structure. These microswimmers are also made steerable by using a thin Co magnetic layer. They can be used in potential environmental applications for active photocatalytic degradation of methylene blue and targeted active drug delivery of an anticancer drug (doxurobicin) in vitro in H₂O₂ solution. Their increased speed from the presence of a hollow mesoporous structure is beneficial for future potential applications, such as hydrogen evolution, selective heterogeneous photocatalysis, and targeted cargo delivery.

中文翻译：

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光驱动的Janus空心中孔TiO2–Au微型扫描仪

光驱动微游泳器因其在各种应用中的潜在用途而受到关注，例如环境修复，氢气释放和靶向药物输送。提出了在低强度紫外线（UV）下具有提高游泳速度的Janus空心介孔TiO ₂ / Au（JHP–TiO ₂ –Au）微泳衣。游泳者在存在和不存在H ₂ O _2的情况下均显示出提高的游泳速度。当紫外光入射时，微电泳器会由于自电泳而移动。有增加了三倍在JHP-TIO的速度₂ -Au microswimmers在比较詹纳斯固体的TiO ₂ /金（JS-的TiO ₂–Au）微型游泳者。其速度的增加归因于多孔游泳者的表面积及其中空结构的增加。还可以通过使用薄的Co磁层来使这些微泳器转向。它们可用于潜在的环境应用中，以在亚甲基蓝中进行活性光催化降解以及在H ₂ O ₂溶液中靶向抗癌药物（阿霉素）的活性药物靶向递送。由于存在中空介孔结构，它们的速度提高，有利于将来的潜在应用，例如放氢，选择性异质光催化和目标货物运输。