摘要
利用种子介导的软模板生长方法制备了金纳米线(Au NWs)阵列,通过调节生长温度控制Au NWs阵列的形貌,最后在经硼氢化钠(NaBH;)清洗过的Au NWs阵列上化学沉积银纳米颗粒(Ag NPs),制得银/金纳米线(Ag/Au NWs)阵列作为表面增强拉曼散射(SERS)基底.选用罗丹明6G(R6G)作为拉曼探针分子测定了Ag/Au NWs阵列的SERS性能.结果表明,Ag/Au NWs阵列作为SERS基底具有高灵敏度、优异的信号均匀性和良好的稳定性.使用Ag/Au NWs阵列对孔雀石绿(MG)检测的检出限可低至1×10;mol/L,线性范围为1×10;~1×10;mol/L.NaBH;可以在不影响SERS性能的情况下去除Ag/Au NWs阵列上吸附的分子,使得SERS基底可以重复使用.使用Ag/Au NWs阵列对湖水中的MG进行检测,得到了可靠的回收率,证明Ag/Au NWs阵列在检测环境水体中的孔雀石绿上具有应用潜力.
In this work,Au nanowires(Au NWs)array was prepared through a seed-mediated soft template growth method,in which the morphology and structure of the Au NWs array can be controlled by adjusting the growth temperature.Silver nanoparticles(Ag NPs)were modified on the Au NWs array cleaned with sodium borohydride(NaBH;)to prepare the silver/gold nanowires(Ag/Au NWs)array as the surface enhanced Raman scattering(SERS)substrate.The SERS performance of Ag/Au NWs array was investigated by testing rhodamine 6G(R6G),a Raman probe molecule.The results indicate that Ag/Au NWs array as SERS substrate showed high sensitivity,excellent signal homogeneity and good stability.In the detection of malachite green in water,Ag/Au NWs array exhibited low detection limit of 1×10;mol/L,and a wide linear range from 1×10;mol/L to 1×10;mol/L.In addition,NaBH;can remove adsorbed molecules on Ag/Au NWs array without affecting SERS performance,which allowing the SERS substrate to be recyclable.Reliable recovery rate obtained in real sample tests indicate that Ag/Au nanowires array has great potential in SERS detection of malachite green in environmental water.
作者
夏大成
周瑞
涂博
蔡志伟
高难
姬晓旭
常钢
任小明
何云斌
XIA Dacheng;ZHOU Rui;TU Bo;CAI Zhiwei;GAO Nan;JI Xiaoxu;CHANG Gang;REN Xiaoming;HE Yunbin(Key Laboratory for the Green Preparation and Application of Functional Materials,Ministry of Education,Hubei Key Laboratory of Polymer Materials,School of Materials Science and Engineering,Hubei University,Wuhan 430062,China;School of Physics and Electronic Engineering,Nanyang Normal University,Nanyang 473000,China)
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2022年第3期67-77,共11页
Chemical Journal of Chinese Universities
基金
国家自然科学基金(批准号:51672074,11774082,11975093,51802163)
湖北省自然科学基金(批准号:2019CFA006)
湖北省科技厅创新团队项目(批准号:T201901)资助。
关键词
阵列
金纳米线
孔雀石绿
表面增强拉曼散射
Array
Au nanowires
Malachite green
Surface enhanced Raman scattering(SERS)
