In situ self-assembly green synthesis of P-doped tubular carbon nitride for photocatalytic activation of PMS to rapidly degrade organic pollutants
简介：Peroxymonosulfate(PMS)-assisted visible-light photocatalytic degradation of organic pollutants using graphitic carbon nitride(g-C3N4)presents a promising and environmentally friendly approach.However,pristine g-C3N4 suffers from limited visible-light absorption and low charge-carrier mobility.In this study,a phosphorus-doped tubular carbon nitride(5P-TCN)was synthesized via a precursor self-assembly method using phosphoric acid and melamine as raw materials,eliminating the need for organic solvents or templates.The 5P-TCN catalyst demonstrated enhanced visible-light absorption,improved charge transfer capability,and a 5.25-fold increase in specific surface area(31.092 m2/g),which provided abundant active sites to efficiently drive the PMS-assisted photocatalytic reaction.The 5P-TCN/vis/PMS system exhibited exceptional degradation performance for organic pollutants across a broad pH range(3-9),achieving over 92％degradation of Rhodamine B(RhB)within 15 min.Notably,the system retained＞98％RhB degradation efficiency after three consecutive operational cycles,demonstrating robust operational stability and reusability.Moreover,key parameters influencing,active radi-cals,degradation pathways,and potential mechanisms for RhB degradation were systematically investigated.This work proposes a green and cost-effective strategy for developing high-efficiency photocatalysts,while demon-strating the exceptional capability of a PMS-assisted photocatalytic system for rapid degradation of RhB.展开
学者：XiaomeiChenDepingWangKejunTanLinDong
关键词：Self-assemblyP-doped tubular carbon nitridePhotocatalysisPMS activationsynergy effect
在线出版日期：2026-03-03 （网站首发日期）
