华东理工大学学报（自然科学版）2026，Vol.52Issue(1)：16-25,10.DOI:10.14135/j.cnki.1006-3080.20250520001
金钯复合结构的制备及其在有机染料降解方面的应用
Preparation of Au-Pd Composite Structures and Their Applications in the Degradation of Organic Pollutants
摘要
Abstract
The supramolecular cage CC3,which contains imine bonds,is successfully synthesized via the Schiff base reaction between 1,3,5-triformylbenzene and(R,R)-1,2-cyclohexanediamine.Subsequently,the reduced molecular cage RCC3,featuring secondary amine bonds,is obtained by employing NaBH4 as a reducing agent.Utilizing RCC3 as a template,ultrasmall palladium nanoclusters(Pd@cage)are prepared through a reverse dual-solvent method.Leveraging the protonation and positive charge characteristics of Pd@cage,a bimetallic Au-Pd composite structure is fabricated via an assembly strategy,thereby forming an interfacial electric field.Upon visible light irradiation,gold nanoparticles(AuNPs)exhibit the localized surface plasmon resonance(LSPR)effect,which generates photogenerated electrons and holes.These photogenerated charge carriers are effectively separated in the interfacial electric field.Specifically,the photogenerated electrons(e-)are transferred to the surface of Pd@cage,where they reduce O2 to superoxide anion(O2•-),while the holes(h+)combine with water molecules to produce hydroxyl radicals(·OH).Experimental results demonstrate that the degradation efficiency of methylene blue by the Au-Pd composite structures is approximately 1.6 times that of AuNPs and 1.5 times that of Pd@cage.The primary reactive oxygen species responsible for the degradation process is the·OH.Furthermore,the Au-Pd composite structure demonstrates robust photocatalytic degradation activity in various aqueous solutions and holds significant potential for the degradation of organic pollutants in real wastewater.关键词
金钯团簇/组装策略/等离激元共振/光催化/降解/有机污染物Key words
gold-palladium composite/assembly strategy/plasmonic laser resonance/photocatalysis/degradation/organic pollutant分类
化学化工引用本文复制引用
李驰,汤佳栋,王辰..金钯复合结构的制备及其在有机染料降解方面的应用[J].华东理工大学学报（自然科学版）,2026,52(1):16-25,10.基金项目
重庆市自然科学基金面上项目(CSTB2023NSCQ-MSX0159) （CSTB2023NSCQ-MSX0159）
