▎ 摘　　要

NOVELTY - A two-dimensional layered composite film comprises a base film and two-dimensional nanosheets set vertically on surface of the base film to form nanosheet layers, and nanospheres dispersed between nanosheet layers. USE - Two-dimensional layered composite film used in water treatment and in preparing drug-oriented drug delivery system (all claimed). ADVANTAGE - The two-dimensional layered composite film improves stability of layered channel of film by positive and negative electrostatic assembly, to ensure stable nanofiltration performance. The nanospheres with different size controls layered channel size, which makes film hole to intercept with ions and molecules, solves the problem of poor water flux molecular ion interception effect and reduces energy consumption in separation process. The hydrophilic nanospheres enhances anti- fouling and antibacterial properties, which reduces film pollution and degradation. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of two-dimensional layered composite film.