摘要
利用倾斜角沉积技术制备了银纳米阵列(Ag NR),通过在其表面修饰C3N4纳米片,构建一种新型表面增强拉曼散射(SERS)基底,实现了水体中有机污染物的高灵敏检测。由于银纳米阵列具有较高均匀性,并且C3N4纳米片被均匀地修饰在其表面,促使该基底具有较好的SERS信号重现性;由于基底表面的C3N4和有机物分子之间的π-π堆积作用,诱导了显著的拉曼增强效果,对污染物联苯胺的检测限为2×10-8 mol/L。结果表明,Ag NR/C3N4基底可以解决传统SERS基底灵敏度低、重现性差的问题,在水环境安全监测方面极具发展前景。
A novel surface enhanced Raman scattering(SERS)substrates was constructed for highly sensitive detection of organic pollutants in water by modifying Ag nanorod arrays(Ag NR)with C3N4.The substrate showed high reproducibility in SERS signals due to the good uniformity of Ag NRs and the even distribution of C3N4 on Ag NRs.In addition,the substrate produced significant Raman enhancement effect attributed toπ-πinteraction between analytes and C3N4.The detection limit was as low as 2×10-8 mol/L for benzidine.These results suggest that the Ag NR/C3N4 eliminates the issues of weak reproducibility and low sensitivity of traditional SERS substrates,holding a great promise for monitoring water pollution.
作者
沈可欣
耿志琴
郑佳佳
李春菊
渠陆陆
Shen Ke-xin;Geng Zhi-qin;Zheng Jia-jia;Li Chun-ju;Qu Lu-lu(School of Chemistry and Materials Science,Jiangsu Normal University,Jiangsu Xuzhou 221116)
出处
《生物化工》
2020年第2期28-31,共4页
Biological Chemical Engineering
基金
江苏省大学生实践创新训练计划(201810320073Z)。
关键词
高重复性
银纳米阵列
有机污染物
快速检测
High reproducibility
Ag nanorod arrays
Organic pollutants
Rapid detection
