摘要
研究了一种Au修饰WO_3纳米棒阵列作为高灵敏的表面拉曼增强基底。WO_3纳米棒阵列采用低温水热法生长在导电玻璃(FTO)上,然后通过离子溅射镀上Au颗粒赋予其表面拉曼增强活性。利用XRD、SEM、TEM对所制基底进行了表征,用罗丹明(R6G)作为探针分子检测了Au修饰WO_3纳米棒阵列基底的表面增强拉曼活性。研究结果表明,WO_3纳米棒截面为矩形,长宽为几十纳米,且表面均匀分布了直径为5 nm左右的Au颗粒。这种基底对R6G有很高灵敏度,检测限可达10^(-8 )mol/L,对于快速检测其他有机污染物具有很大的潜力。
Vertically aligned Au decorated WO_3 nanorods(Au-WO_3 NRs)were investigated as cheap and sensitive surface-enhanced Raman scattering(SERS)-active substrates.The WO_3 NRs were prepared through a simple,low-temperature hydrothermal route and made SERS-active through deposition of Au nanoparticles by ion sputtering.The structure and morphology of WO_3 were investigated through XRD,SEM and TEM.The probe molecule rhodamine 6G(R6G)has been detected by the substrate.It is found that the Au nanoparticles of about 5 nm in diameter are uniformly distributed on the WO_3 nanorod which has a rectangular cross-section.The Au-WO_3 NRs substrate shows high sensitivity for R6G,suggesting a promising potential for application in rapid detection of environmental pollutants.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2018年第S1期132-135,共4页
Rare Metal Materials and Engineering
基金
国家重点基础研究发展计划("973"项目)(2013CB934301)
