| 초록 |
Bio-hazardous organic molecules such as bezene, toluene, ethylbezene, toluene (BTEX) induce toxic effects on skin, respiratory and central nervous systems. Therefore, it is important to develop an on-site bio-hazardous molecule separation and detection system for environmental and healthcare reasons. In this work, a hydrophobic hexagonal boron nitride (hBN) coated silver nanowire (AgNWs) sponge sensor was developed for simultaneous molecular separation and label-free detection from the water. The AgNWs formed on the porous sponge created a high density of hotspots for Raman signal enhancement, and the hBN adhered on AgNW surface absorbed BTEX via hydrophobic interactions. After absorption, each component was individually identified by the analysis of Raman spectrum. Then, principal component analysis (PCA) clearly discriminated the single, binary and ternary mixtures of BTEX enabling label-free multiplex detection. Finally, absorption capacity, reusability, and applicability of the SERS sponge for real environmental water, such as river and sea water, was demonstrated. The developed hydrophobic SERS sponge showed the excellent bio-hazardous molecule separation and identification properties with a cost effective utilization. The developed SERS sponge sensor is expected to be applied for various environmental and healthcare monitoring system. |
