Preparation of Au@Ag nanopyramid and its application in fast detection of plasticizers
WANG Xin-ru1, ZHANG Le1, GE Zi-pan1, WANG Juan1, WANG Qian-qian1, XU Wei-ping2
1. College of Medicine, Anhui University of Chinese Medicine, Hefei 230038, China; 2. The First Affiliated Hospital, University of Science and Technology of China, Hefei 230001, China
Abstract: A fast and convenient approach is developed to achieve sensitive detection of plasticizers.Gold-silver core-shell structure is formed by coating silver shell layer on the surface of gold nanotriangle sheets that are previously synthesized,and used as the active substrate of surface-enhanced Raman scattering (SERS).It is demonstrated that the sensitivity and reproducibility of SERS active substrate is largely improved by using crystal violate as probe molecules.On the base of the SERS active substrate,the detection limits of butyl benzyl phthalate (BBP) and di(2-ethylhexyl) phthalate (DEHP) are improved,reaching 10-9 mol·L-1 and 10-7 mol·L-1,respectively.In addition,the detection limit of BBP spiked with wines achieves 1.3 mg·kg-1.As a result,Au@Ag nanopyramid as SERS-based substrate can provide a way to detect plasticizers existed in food and drinks.
王欣如, 张乐, 葛子盼, 王娟, 汪倩倩, 徐维平. Au@Ag纳米三棱锥的制备及对塑化剂的快速检测[J]. 现代化工, 2020, 40(2): 222-225.
WANG Xin-ru, ZHANG Le, GE Zi-pan, WANG Juan, WANG Qian-qian, XU Wei-ping. Preparation of Au@Ag nanopyramid and its application in fast detection of plasticizers. Modern Chemical Industry, 2020, 40(2): 222-225.
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