球形银纳米粒子的制备及其表面增强拉曼活性研究
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摘要
提供了一种绿色的、具有高表面增强拉曼活性(SERS)的银纳米球的溶剂热制备方法。在制备体系中,聚乙烯吡咯烷酮为峰端剂,无水乙醇为溶剂和还原剂,所获得的银纳米球尺寸分布窄(20-40 nm),形貌均匀。作为SERS基底检测模型违禁药品(孔雀石绿)时表现出较高的活性,即使孔雀石绿的浓度低至10-12mol·L-1仍旧可以检出。
A method of solvent-thermal preparation for silver nanospheres with high Surface-enhanced Raman Scattering( SERS) is given,in which polyvinylpyrrolidone is taken as the capping reagent,and ethanol as both solvent and reducer. The obtained silver nanospheres have narrow size distribution and uniform shape. When they are used as SERS substrate to detect model illegal drugs( malachite green oxalate),the obtained silver nanospheres show higher activity,and even the concentration of malachite green oxalate is as low as 10~(-12) mol·L~(-1),it could still be detected.
A method of solvent-thermal preparation for silver nanospheres with high Surface-enhanced Raman Scattering( SERS) is given,in which polyvinylpyrrolidone is taken as the capping reagent,and ethanol as both solvent and reducer. The obtained silver nanospheres have narrow size distribution and uniform shape. When they are used as SERS substrate to detect model illegal drugs( malachite green oxalate),the obtained silver nanospheres show higher activity,and even the concentration of malachite green oxalate is as low as 10~(-12) mol·L~(-1),it could still be detected.
引文
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[13]张卫华,张春华.纳米Ni-Fe-B催化还原剂的制备及表征[J].内蒙古民族大学学报(自然科学版),2014(5):512.
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[15]张小军,王凤冉,吴康兵.纳米介孔氧化硅对雌二醇的氧化增敏效应及其电化学检测研究[J].湖北民族学院学报(自然科学版),2010,28(1):1-5.
[2]Jeanmaire D L,Duyne R P Van.Surface Raman spectroelectrochemistry.Part I.Heterocyclic,aromatic,and aliphatic amines adsorbed on the anodized silver electrode[J].J.Electroanal.Chem.,1977(84):1-20.
[3]Chen Y,Chen Z P,Long S Y,et al.Generalized ratiometric indicator based Surface-Enhanced Raman Spectroscopy for the detection of Cd2+in environmental water samples[J].Anal.Chem,2014(86):12236-12242.
[4]Nie,S M,Emory,S R.Probing single molecules and single nanoparticles by Surface-Enhanced Raman Scattering[J].Science,1997(275):1102-1106.
[5]Chen X C,Jiang C L,Yu S M.Nanostructured materials for applications in surface-enhanced Raman scattering[J].Cryst Eng Comm,2014(16):9959-9973.
[6]Wang L,Guo T,Lu Q,et al.Sea-urchin-like Au nanocluster with Surface-Enhanced Raman Scattering in detecting epidermal growth factor receptor(EGFR)mutation status of malignant pleural effusion[J].ACS Appl.Mater.Interfaces,2015(7):359-369.
[7]Leng W,Vikesland P J.Nanoclustered gold honeycombs for Surface-Enhanced Raman Scattering[J].Anal.Chem.,2013(85):1342-1349.
[8]Qiu J,Wu Y C,Wang Y C,et al.Surface plasmon mediated chemical solution deposition of gold nanoparticles on a nanostructured silver surface at room temperature[J].J.Am.Chem.Soc.,2013(135):38-41.
[9]Kumar J,Thomas K G.Surface-Enhanced Raman Spectroscopy:investigations at the nanorod edges and dimer junctions[J].J.Phys.Chem.Lett.,2011(2):610-615.
[10]Yin A X,Liu W C,Ke J,et al.Ru nanocrystals with shape-dependent Surface-Enhanced Raman Spectra and catalytic properties:controlled synthesis and DFT calculations[J].J.Am.Chem.Soc.,2012(134):20479-20489.
[11]Zhang J,Li X,Sun X,et al.Surface Enhanced Raman Scattering effects of silver colloids with different shapes[J].J.Phys.Chem.B,2005(109):12544-12548.
[12]段莉梅,崔海洋,赵伟强.硫化镉纳米材料对罗丹明B溶液的光催化降解性能[J].内蒙古民族大学学报(自然科学版),2013(2):259-261.
[13]张卫华,张春华.纳米Ni-Fe-B催化还原剂的制备及表征[J].内蒙古民族大学学报(自然科学版),2014(5):512.
[14]黄华国.探究分析纳米金属材料计算机模拟研究进展[J].内蒙古民族大学学报(自然科学版),2014(6):632-634.
[15]张小军,王凤冉,吴康兵.纳米介孔氧化硅对雌二醇的氧化增敏效应及其电化学检测研究[J].湖北民族学院学报(自然科学版),2010,28(1):1-5.