Cu_(2)O/Cu/Ag三元复合微/纳米立方:一锅法制备与表面增强拉曼和抗菌活性研究  

Cu_(2)O/Cu/Ag ternary composite microcubes:one-pot fabrication and their surface-enhanced Raman scattering and antibacterial activity

作　　者：任珊珊 REN Shanshan(Department of Chemistry,Tonghua Normal University,Tonghua 134002,China)

机构地区：[1]通化师范学院化学学院,吉林通化134002

出　　处：《辽宁师范大学学报(自然科学版)》2025年第1期121-127,共7页Journal of Liaoning Normal University:Natural Science Edition

摘　　要：设计了一种简单的一锅法路线,制备得到了Cu_(2)O微米立方与Cu、Ag纳米粒子复合的Cu_(2)O/Cu/Ag三元异质结微纳米结构.密度泛函理论(DFT)计算证实Cu_(2)O与Ag、Cu的界面以及Cu_(2)O晶体内部发生了电子转移和电荷聚集,形成了有利于电子传输的通道.在三组分的协同作用下,以此复合物为基底检测对巯基苯甲酸探针分子时检测限可达到10-10 mol/L.另外,抗菌活性研究表明,此三元复合材料具有出色的抗菌性能且效果优于任何一个单一组分.In this paper,a one-pot route was designed to synthesize ternary Cu_(2)O/Cu/Ag composite heterojunction structures,which consisted of Cu_(2)O microcubes,Cu nanoparticles and Ag nanoparticles.Density functional theory(DFT)calculations indicated that electron transform and charge accumulation occurred on the interface between Cu_(2)O and Ag or Cu,as well as in the internal crystal of Cu_(2)O,which led to the formation of passageway for electrons.The synergies of these three components brought about higher activity,and the detection limit could be up to 10-10 mol/L when the Cu_(2)O/Cu/Ag composite was used as surface-enhanced Raman scattering(SERS)substrate in the detection of para-mercaptobenzoic acid(p-MBA)probe molecule.Furthermore,the antibacterial ability of Cu_(2)O/Cu/Ag was also superior and better than any single components.

关 键 词：一锅法制备 复合异质结 表面增强拉曼 抗菌 密度泛函理论 

分 类 号：O657.37[理学—分析化学]