Construction of Ag-AgInS₂/In₂S₃/TNR Nanoarray High-Performance Photocatalyst and its Degradation Performance of Tetracycline Hydrochloride

In this work, Ag quantum dot-modified AgInS 2 /In 2 S 3 /TNR nanoarray photocatalysts were prepared by a secondary hydrothermal and wet chemical method. Compared with the unmodified TNR arrays, the modified Ag-AgInS 2 /In 2 S 3 /TNR samples showed a significant increase in light absorption and could utilize more solar energy. In addition, the Ag-AgInS 2 /In 2 S 3 /TNR samples can effectively promote the separation and transfer of electron-hole pairs to enhance the photoelectrochemical and photocatalytic performance of the composites, and the degradation rate of the optimal Ag-AgInS 2 /In 2 S 3 /TNR samples can reach 95.73% for TC-HCl, which is of great importance for environmental protection. The main reasons for the enhanced catalytic performance are: the presence of surface Ag quantum dots and AgInS 2 sensitizers greatly increases the absorption of sunlight, allowing more energy to enter the catalytic system; the stepped energy level arrangement of AgInS 2 /In 2 S 3 /TNR nanoarrays can spatially separate electrons and holes, improving the separation efficiency and enhancing the overall performance of the material.