纳米银自催化氧化测定过氧苯甲酰的光谱研究 - nature

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1、AnewsilvernanorodSPRprobefordetectionoftracebenzoylperoxideZhiliangJiang*,GuiqingWen,YangheLuo,XinghuiZhang,QingyeLiu,AihuiLiang*(KeyLaboratoryofEcologyofRareandEndangeredSpeciesandEnvironmentalProtectionofMinistryEducation,GuangxiNormalUniversity,Guilin541004,China)Keywords:silvernanorod;stablen

2、anosol;SPR;Rayleighscattering;SERS;BPO;detection.AfgabcdeWavelength/nmFigure1SAbsorptionspectraoftheAgNPB-NaCl-BPOsystema:5.0×10-5mol/LAgNPB-6.25×10-4mol/LNaCl-pH6.2;b:a-0.4µg/mLBPO;c:a-1.6µg/mLBPO;d:a-3.2µg/mLBPO;e:a-4.0µg/mLBPO;f:a-6.4µg/mLBPO;g:a-7.2µg/mLBPO.AabcdefghabcdefghWavelength/nmFigur

3、e2SAbsorptionspectraoftheAgNR-NaCl-BPOsystema:5.0×10-5mol/LAgNR-5.0×10-4mol/LNaCl-pH6.2;b:a-0.5µg/mLBPO;c:a-1.5µg/mLBPO;d:a-2.0µg/mLBPO;e:a-2.5µg/mLBPO;f:a-3.0µg/mLBPO;g:a-3.5µg/mLBPO;h:a-4.0µg/mLBPO.abcdefFigure3SRRSspectraoftheAgNR-BPOsystema:50μmol/LAgNR;b:a+0.4mg/LBPO-pH6.2;c:a+2mg/LBPO;d:a+4

4、mg/LBPO;e:a+8mg/LBPO;f:a+10mg/LBPO.IfedcbaWavelength/nmFigure4SRRSspectraoftheAgNPB-NaCl-BPOsystema:5.0×10-5mol/LAgNPB-6.25×10-4mol/LNaCl-pH6.2;b:a-0.8mg/LBPO;c:a-1.6mg/LBPO;d:a-2.4mg/LBPO;e:a-3.2mg/LBPO;f:a-4.0mg/LBPO.hgfedcbaIWavelength/nmFigure5SRRSspectraoftheAgNR-NaCl-BPOsystema:5.0×10-5mol/

5、LAgNR-5.0×10-4mol/LNaCl-pH6.2;b:a-0.5µg/mLBPO;c:a-1.0µg/mLBPO;d:a-1.5µg/mLBPO;e:a-2.0µg/mLBPO;f:a-2.5µg/mLBPO;g:a-3.0µg/mLBPO;h:a-3.5µg/mLBPO.IabcdeRamanshift/cm-1Figure6SSERSspectraoftheAgNR-NaCl–BPO-VBBsystema:5.0×10-5mol/LAgNR-5.0×10-4mol/LNaCl-4.0×10-7mol/LVBB-pH6.2;b:a-0.4µg/mLBPO;c:a-0.8µg/

6、mLBPO;d:a-1.5µg/mLBPO;e:a-2.0µg/mLBPO.abcdIRamanshift/cm-1Figure7SSERSspectraoftheAgNR-BPO-VBBsystema:5.0×10-5mol/LAgNR-4.0×10-7mol/LVBB-pH6.2;b:a-1.0µg/mLBPO;c:a-2.0µg/mLBPO;d:a-3.0µg/mLBPO.abΔIµMVBBFigure8SEffectofVBBconcentrationonΔI5.0×10-5mol/LAgNR-5.0×10-4mol/LNaCl-4.0×10-7mol/LVBB-0.4µg/mL

7、BPO-pH6.2a:VBBwasaddedbeforereaction;b:VBBwasaddedafterreaction.abcdFigure9SColorsofthefourAgNPsolsa:0.1mmol/LAgNO3-3.6mMsodiumcitrate-0.072%H2O2-0.4mMNaBH4;b:aafterheatingat100℃waterbathfor10min；c:0.1mmol/LAgNO3-0.6mM