Plasmonic MoO_3−x nanosheets supported Ag nanocubes were designed as high-efficient Near-infrared (NIR) light driven antibacterial agent. The as-designed MoO_3−x-Ag not only significantly reduces the cost and toxicity of Ag, but also greatly enhances the antibacterial activity towards E. coli and S. aureus in comparison with bare MoO_3−x and Ag upon NIR laser irradiation. Three effects are believed to contribute to this enhancement: (1) the plasmonic MoO_3−x-Ag exhibits excellent NIR light absorption and photothermal conversion abilities, which help to kill bacteria; (2) NIR light induced heat in MoO_3−x also diffuses to Ag nanocubes and triggers the release of more Ag⁺, leading to bacterial cell death; (3) under NIR light irradiation, hot electrons and holes are generated and separated through MoO_3−x-Ag interface, which produces reactive species for the oxidation of out membrane of bacteria. The synergism of NIR light driven photothermal effect, silver release and photocatalytic reaction makes the designed plasmonic MoO_3−x-Ag a promising antibacterial agent for cleaning the microbial contaminated water environment.

载有Ag纳米立方体的等离子MoO _3-x纳米片被设计为高效的近红外（NIR）光驱动抗菌剂。与裸露的MoO _3-x和Ag相比，如此设计的MoO _3-x -Ag不仅显着降低了Ag的成本和毒性，而且还大大增强了其对大肠杆菌和金黄色葡萄球菌的抗菌活性。。相信有三种作用可促进这种增强：（1）等离子体MoO _3-x -Ag具有出色的近红外吸收和光热转换能力，有助于杀死细菌。（2）NIR光在MoO _3-x中感应出的热量还扩散到Ag纳米立方体并触发更多Ag ⁺的释放，导致细菌细胞死亡。（3）在近红外光照射下，通过MoO _3-x -Ag界面产生并分离出热电子和空穴，从而产生反应性种，以氧化细菌的外膜。近红外光驱动的光热效应，银的释放和光催化反应的协同作用使所设计的等离子体MoO _3-x -Ag成为有望用于清洁微生物污染水环境的抗菌剂。