▎ 摘　　要

NOVELTY - Preparing bismuth phosphate/3D nitrogen doped graphene hydrogel photoelectric functional nanomaterials comprises (i) preparing bismuth phosphate/3D nitrogen doped graphene hydrogel (3DNGH) three-dimensional nanocomposite, and (ii) constructing photoelectrochemical aptamer sensor for tetracycline detection. USE - The method is useful for preparing bismuth phosphate/3D nitrogen doped graphene hydrogel photoelectric functional nanomaterials. ADVANTAGE - The method has high sensitivity and is economical. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for research and detection method for aptamer sensing and detection of tetracycline, comprising using BiPO4/3DNGH three-dimensional photoelectric functional nanomaterials as photoelectric active materials to construct photoelectrochemical sensors and the establishment of an aptamer sensing platform for detection.