We report a simple approach for the fabrication of cheap but effective surface-enhanced Raman scattering(SERS) active substrates consisting of natural egg shell membrane(ESM) grafted with Ag-nanoparticles(Ag-NPs) deco...We report a simple approach for the fabrication of cheap but effective surface-enhanced Raman scattering(SERS) active substrates consisting of natural egg shell membrane(ESM) grafted with Ag-nanoparticles(Ag-NPs) decorated carbon nanotubes(CNTs)(denoted as Ag-NPs@CNTs@ESM),via ultrasonic adsorption of CNTs on the ESM and the subsequent Ag-sputtering.As high density Ag-NPs were sputtered onto each CNT anchored on the ESM nanofiber,homogeneous nanoscaled gaps between the neighboring Ag-NPs were achieved,leading to high SERS activity with excellent SERS signal homogeneity over the whole membrane.Using the Ag-NPs@CNTs@ESM membranes as SERS-substrates,methyl parathion(one of the most hazardous insecticides),PCB-3(one congener of polychlorinated biphenyls belonging to persistent organic pollutants) and bovine serum albumin(BSA,biomolecules) with a concentration down to 10-11 M,10-6 M and 0.1 ppb were detected respectively,showing promising potentials in rapid trace detection of environmental pollutants and biochemicals.展开更多
基金supported by the National Key Basic Research Program of China(2013CB934304)the National Natural Science Foundation of China(21307138,11274312,11175204 and 51472245)+1 种基金the State Administration of Foreign Experts Affairs of Chinese Academy International Partnership Program for Creative Research Teamsthe President Foundation of Hefei Institutes of Physical Science,Chinese Academy of Sciences(YZJJ201312)
文摘We report a simple approach for the fabrication of cheap but effective surface-enhanced Raman scattering(SERS) active substrates consisting of natural egg shell membrane(ESM) grafted with Ag-nanoparticles(Ag-NPs) decorated carbon nanotubes(CNTs)(denoted as Ag-NPs@CNTs@ESM),via ultrasonic adsorption of CNTs on the ESM and the subsequent Ag-sputtering.As high density Ag-NPs were sputtered onto each CNT anchored on the ESM nanofiber,homogeneous nanoscaled gaps between the neighboring Ag-NPs were achieved,leading to high SERS activity with excellent SERS signal homogeneity over the whole membrane.Using the Ag-NPs@CNTs@ESM membranes as SERS-substrates,methyl parathion(one of the most hazardous insecticides),PCB-3(one congener of polychlorinated biphenyls belonging to persistent organic pollutants) and bovine serum albumin(BSA,biomolecules) with a concentration down to 10-11 M,10-6 M and 0.1 ppb were detected respectively,showing promising potentials in rapid trace detection of environmental pollutants and biochemicals.
