title: Tailoring Au-Ag-S composite microstructures in one-pot for both SERS detection and photocatalytic degradation of plasticizers DEHA and DEHP.
abstract: We report a facile single-step one-pot solvothermal process for tailoring the Au-Ag-S microstructures as bifunctional substrates for both surface-enhanced Raman scattering (SERS) detection and photocatalytic degradation of plasticizers diethylhexyl phthalate (DEHP) and diethylhexyl adipate (DEHA). Typically, two different microstructures, the Ag2S particles inlaid Au microflowers (Ag2S-Au MFs) and Au particles decorated AgAuS microsheets (Au-AgAuS MSs) were obtained. The Ag2S-Au MF substrates finally turned out to provide 0.9 × 10(-9) and 0.9 × 10(-7) M of the limits of detection (LODs) for DEHP and DEHA in orange juice. And on the other hand, the Au-AgAuS MSs achieved complete degradation of DEHP and DEHA (1 × 10(-5) M) after 20 and 25 min of UV light irradiation, respectively. It is believed that the facile preparation and appreciable SERS and catalytic activities of these Au-Ag-S microstructures would make much sense to develop novel multifunctional sensing and monitoring devices.
authors.affiliation: Laboratory of Advanced Materials, Fudan University , Shanghai 200438, People's Republic of China.
authors.forename: Qi
authors.initials: Q
authors.lastname: Cao
authors.forename: Renchao
authors.initials: R
authors.lastname: Che
mesh_terms: D000272:Adipates / Q000032:analysis; D001628:Beverages / Q000032:analysis; D004051:Diethylhexyl Phthalate / Q000032:analysis; D006046:Gold / Q000737:chemistry*; D008863:Microspheres; D010968:Plasticizers / Q000032:analysis*; D018030:Silver Compounds / Q000737:chemistry*; D013059:Spectrum Analysis, Raman; D014466:Ultraviolet Rays
chemical_list: D000272:Adipates; D010968:Plasticizers; D018030:Silver Compounds; C013966:dioctyl adipate; D006046:Gold; C013251:silver sulfide; D004051:Diethylhexyl Phthalate