摘要
本研究利用化学还原法制备了Cu_(2)O纳米球,以此作为模板通过液相硫化将其转变为空心的Cu_(7)S_(4)纳米球,并在Cu_(7)S_(4)纳米球溶液中加入适量的HAuCl_(4)·4H_(2)O,从而获得Cu_(7)S_(4)纳米球表面镶嵌金纳米粒子的Cu_(7)S_(4)@Au复合材料。以罗丹明B(RhB)作为拉曼探针分子,研究Cu_(7)S_(4)@Au复合材料的表面增强拉曼(SERS)特性。结果表明,Cu_(7)S_(4)@Au复合材料具有较高的灵敏度和良好的检测重现性。此外,Cu_(7)S_(4)@Au基底还可用于检测致癌物苏丹III和孔雀石绿(MG),其检测限(LOD)分别为3.71×10^(-6)和2.48×10^(-7)mol/L(M),该材料在食品安全监测方面具有应用潜力。
Cu_(2)O nanospheres(NSs)were prepared by chemical reduction.Based on it,hollow Cu_(7)S_(4)NSs were synthesized by the liquid sulfidation transformation of Cu_(2)O NSs,and followed by the addition of an appropriate amount of HAuCl_(4)·4H_(2)O solution.Thus,a Cu_(7)S_(4)@Au composite was obtained with gold nanoparticles attached to the surface of Cu_(7)S_(4)hollow NSs.Rhodamine B(Rh B)was used as Raman probe molecules to further explore the surface-enhanced Raman properties of the Cu_(7)S_(4)@Au composite.It is found that Cu_(7)S_(4)@Au composite has high sensitivity and good reproducibility.In addition,it was employed to detect carcinogens such as sudan III and malachite green(MG)with detection limits(LOD)of 3.71×10^(-6)M and 2.48×10^(-7)M,respectively.Therefore,the proposed material exhibits potential application prospects for food safety monitoring.
作者
盛双华
杨松
任银拴
刘应开
SHENG Shuanghua;YANG Song;REN Yinshuan;LIU Yingkai(Institute of Physics and Electronic Information,Yunnan Normal University,Kunming 650500,China;Yunnan Key Laboratory of Opto-electronic Information Technology,Kunming 650500,China;School of Physics and Electronic Science,Qiannan Minzu Normal University,Duyun 558000,China)
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
2021年第6期929-936,共8页
Journal of Materials Science and Engineering
基金
国家自然科学基金资助项目(11764046,11304275,11764047,61564010)。
