塑料科技2026，Vol.54Issue(3)：143-147,5.DOI:10.15925/j.cnki.issn1005-3360.2026.03.026
N-TiO2@PVC自降解塑料薄膜的制备及其光催化性能表征
Preparation and Photocatalytic Performance Characterization of N-TiO2@PVC Self-degradable Plastic Film
张玲秀 1张琼1
作者信息
- 1. 晋中职业技术学院,山西 晋中 030600
- 折叠
摘要
Abstract
The study successfully prepared a self-degradable composite film(N-TiO2@PVC)of nitrogen-doped titanium dioxide(N-TiO2)loaded on a polyvinyl chloride(PVC)matrix,and explored the mechanism of PVC molecular chain scission driven by visible light.The results showed that the doping of N-TiO2 significantly enhanced the photocatalytic degradation performance of PVC films,with N-TiO2 forming uniformly dispersed nanostructures within the PVC matrix.The optical band gap of the 4%N-TiO2@PVC composite film decreased to 3.29 eV,significantly lower than that of pure PVC at 5.63 eV,and exhibited the lowest rate of photogenerated carrier recombination,thereby improving photocatalytic activity.After 400 h of ultraviolet light irradiation,the mass loss rate of the 4%N-TiO2@PVC composite film reached 22.90%,indicating its excellent photocatalytic degradation performance.SEM and FTIR analyses confirmed the crucial role of N-TiO2 in promoting PVC chain scission,revealing its mechanism of inducing C—Cl bond cleavage and the formation of unsaturated/oxidized structures under light irradiation.关键词
N-TiO2@PVC/自降解薄膜/可见光驱动/分子链断裂/光催化Key words
N-TiO2@PVC/Self-degradable film/Visible light driven/Molecular chain fracture/Photocatalysis分类
化学化工引用本文复制引用
张玲秀,张琼..N-TiO2@PVC自降解塑料薄膜的制备及其光催化性能表征[J].塑料科技,2026,54(3):143-147,5.
