Au修饰WO_3纳米棒阵列的制备及其表面拉曼增强效应
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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.
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.
引文
[1]Tang Haibin,Meng Guowen,Huang Qing et al.Advanced Functional Materials[J],2012,22:218
[2]Chen Bin,Meng Guowen,Huang Qing et al.ACS Applied Materials&Interfaces[J],2014,6:15 667
[3]Hou Chao,Meng Guowen,Huang Qing et al.Chemical Communication[J],2014,50:569
[4]Shan Yufeng,Yang Yong,Cao Yanqin et al.Nanotechnology[J],2016,27:14 550 214
[5]Huang Chenyue,Xu Chunxiang,Lu Junfeng et al.Applied Surface Science[J],2016,365:291
[6]Zhou Qitao,Meng Guowen,Huang Qing et al.Physical Chemistry Chemical Physics[J],2014,16(8):3686
[7]Wang Wei,Feng Zhenyu,Jiang Wei et al.Cryst Eng Comm[J],2013,15(7):1339
[8]Xu Xiaoye,Meng Guowen,Huang Qing et al.Nanotechnology[J],2012,23:38 570 538
[2]Chen Bin,Meng Guowen,Huang Qing et al.ACS Applied Materials&Interfaces[J],2014,6:15 667
[3]Hou Chao,Meng Guowen,Huang Qing et al.Chemical Communication[J],2014,50:569
[4]Shan Yufeng,Yang Yong,Cao Yanqin et al.Nanotechnology[J],2016,27:14 550 214
[5]Huang Chenyue,Xu Chunxiang,Lu Junfeng et al.Applied Surface Science[J],2016,365:291
[6]Zhou Qitao,Meng Guowen,Huang Qing et al.Physical Chemistry Chemical Physics[J],2014,16(8):3686
[7]Wang Wei,Feng Zhenyu,Jiang Wei et al.Cryst Eng Comm[J],2013,15(7):1339
[8]Xu Xiaoye,Meng Guowen,Huang Qing et al.Nanotechnology[J],2012,23:38 570 538