A Facile One‐Pot Synthesis of a Two‐Dimensional MoS2/Bi2S3 Composite Theranostic Nanosystem for Multi‐Modality Tumor Imaging and Therapy

2D PEG-ylated MoS2/Bi2 S3 composite nanosheets are successfully constructed by introducing bismuth ions to react with the two extra S atoms in a (NH4)2 MoS4 molecule precursor for solvothermal synthesis of MoS2. The MBP nanosheets can serve as a promising platform for computed tomography and photoacoustic-imaging-guided tumor diagnosis, as well as combined tumor photothermal therapy and sensitized radiotherapy.