高效近红外响应Phloxine B/g-C_(3)N_(4)的制备及在抗病毒中的应用

Preparation andAntivirialApplicationof Highly Efficient Near-infrared Responsive Phloxine B/g-C_(3)N_(4)

采用荧光桃红B(Phloxine B)与三聚氰胺一步煅烧得到具有优异光催化性能与光热性能的g-C_(3)N_(4)。通过扫描电镜、傅立叶变换红外光谱表征复合材料,通过EPR、光热性能测试、光催化灭病毒实验,对比了在引入Phloxine B前后,g-C_(3)N_(4)产生单线态氧的能力、光热性能和灭病毒性能。结果表明,在808 nm光照的条件下,引入了Phloxine B的g-C_(3)N_(4)可以产生高水平的单线态氧并能随着光照时间的延长而显著升温,光催化灭病毒实验表明其对MS2噬菌体具有出色的杀灭性能,仅光照5 min就可以实现对MS2噬菌体99.99%的灭活。

The synthesis of graphitic carbon nitride(g-C_(3)N_(4))with remarkable photocatalytic and photothermal characterisitics was achieved through one step calcination process involving the utilization of Phloxine B and melamine as precursors.The morphology of the composites were unveiled through scanning electron microscopy and characterized by Fourier transform infrared spectroscopy.Subsequently,the capability of g-C_(3)N_(4) for single oxygen generation,photothermal performance,and the inactivation of virus was conducted.This investigation involved comparative analyses before and after incorporation of Phloxine B,employing electron paramagnetic resonance(EPR)spectroscopy,assessments of photothermal performance,and photocatalytic antivirival experiments.The results indicate that the incorporation of Phloxine B into g-C_(3)N_(4) leads to a notable capability to generate elevated levels of single oxygen under 808 nm light irradiation.Moreover,there exists a discernible rise in temperature observed over prolonged exposure to 808 light.Photocatalytic experiments targeting viral eradication have showcased remarkable efficacy against MS2 bacteriophage.A mere 5-minute exposure to light accomplishes a 99.99% deactivation rate of the MS2 bacteriophage.