The tubular architecture with multiple components can bring synergistic effects to improve the enzyme-like activity of molybdenum-based nanomaterials. Here, a facile polypyrrole (PPy)-protected hydrothermal sulfidation process was implemented to engineer MoS/AgS heterointerfaces encapsulated in one-dimensional (1D) PPy nanotubes with MoO@Ag nanorods as the self-sacrificing precursor. Notably, the sulfidation treatment led to the generation of MoS nanosheets (NSs) and AgS nanoparticles (NPs) and the creation of a tubular structure with a "kill three birds with one stone" role. The AgS/MoS@PPy nanotubes showed the synergistic combined effects of AgS NPs, MoS NSs, and the 1D tube-like nanostructure. Based on the synergistic effects from these multiple components and the tubular structure, AgS/MoS@PPy nanocomposites were used as a colorimetric sensing platform for detecting HO. Moreover, the reduction of 4-nitrophenol (4-NP) revealed excellent catalytic activity in the presence of NaBH and AgS/MoS@PPy nanocomposites. This work highlights the effects of MoS/AgS heterointerfaces and the hierarchical tubular structure in catalysis, thereby providing a new avenue for reducing 4-NP and the enzyme-like catalytic field.
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