A novel hexagonal AgBr/Zn-Al MMO S-scheme photocatalyst was prepared by adopting a simplified hydrothermal and co-precipitation method. The prepared photocatalytic system exhibited excellent photocatalytic performance in degradation of tetracycline hydrochloride (TC). In particular, the ABMO0.2/Vis system generated the best TC removal rate (95%) within 60 min of visible light irradiation. Moreover, no significant decrease of the photocatalytic performance had been observed after four cycles, while the leaching of silver ions was effectively controlled. The excellent photocatalytic performance can be attributed to the synergistic effect occurring between the unique morphological structure and the S-scheme heterojunction charge transfer mechanism, since that that synergistic effect enhanced light absorption capacity and separation efficiency of the photogenerated carriers and the redox ability. In addition, liquid chromatography-mass spectrometry (LC-MS) analysis clarified the mineralization behavior and detailed decomposition pathways of TC. This work opens a new pathway for the design of efficient S-scheme heterojunctions and provides new insights into the photocatalytic degradation mechanism of antibiotics.

采用简化的水热共沉淀法制备了一种新型六方AgBr/Zn-Al MMO S型光催化剂。所制备的光催化体系在降解盐酸四环素（TC）中表现出优异的光催化性能。特别是 ABMO0.2/Vis 系统在可见光照射 60 分钟内产生了最佳的 TC 去除率 (95%)。此外，四次循环后光催化性能没有明显下降，而银离子的浸出得到有效控制。优异的光催化性能可归因于独特的形态结构和S型异质结电荷转移机制之间的协同效应，因为这种协同效应增强了光生载流子的光吸收能力和分离效率以及氧化还原能力。此外，液相色谱-质谱（LC-MS）分析阐明了TC的矿化行为和详细的分解途径。这项工作为设计高效的S型异质结开辟了一条新途径，并为抗生素的光催化降解机制提供了新的见解。