It is valuable to design a photocatalyst semiconductor architecture that enables the effective contact with bacteria, since only random and momentary contact exists in most of the present photocatalytic antibacterial systems. Herein, nanomesh‐structured graphitic carbon nitride (g‐C₃N₄) a visible‐light photocatalyst was successfully prepared using SiO₂ microspheres as template. The optimal pore size in the g‐C₃N₄ nanomesh was determined at the average diameter of about 500 nm of SiO₂ microspheres, which matches the size of E.coli K‐12. Excluding the effect of electrostatic contact, the efficient contact between catalyst and bacteria was achieved, leading to increased capture and reaction time for killing bacteria. The porous structure promoted the light absorption and realized more active edge. As a result, the photocatalytic antibacterial activity and the leakage of K⁺ ions was greatly enhanced via ^.OH radical as the main active species. This work provided a new approach to photocatalytic sterilization for practical applications.

中文翻译：

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纳米网状石墨碳氮化物聚合物可有效捕获和光催化去除细菌。

设计能够与细菌有效接触的光催化剂半导体结构是有价值的，因为在当前的大多数光催化抗菌系统中仅存在随机和瞬时接触。在此，以SiO ₂微球为模板成功制备了纳米网状石墨碳氮化物（g-C ₃ N ₄）可见光光催化剂。最佳孔径在G-C ₃ Ñ ₄纳米网以约500纳米的SiO的平均直径确定的₂的微球，其中的尺寸相匹配的大肠杆菌K-12。排除静电接触的影响，可以实现催化剂与细菌之间的有效接触，从而增加了杀死细菌的捕获和反应时间。多孔结构促进了光吸收并实现了更活跃的边缘。结果，通过大大增强了光催化抗菌活性和K ⁺离子的泄漏^。OH自由基为主要活性物质。这项工作为实际应用提供了一种新的光催化灭菌方法。