A novel porous flower-like HA/Ag nanocomposite: One pot preparation and excellent performances as both SERS nanosensor and catalyst

A multifunctional porous flower-like HA/Ag nanocomposite was prepared via one-pot sol-thermal method without any templates. Ag NPs relatively uniform particles are inlaid in or on slice of flower-like HA/Ag. The results show the larger surface area of porous HA is conducive to the collection of Ag NPs and absorption of Rh6G or 4-NP. The detection limits of Rh6G through SERS effect of HA/Ag nanocomposite could reach to 10−10 M, while the reduction reaction time of 4-NP to 4-AP could be shorten to 8 min. The multifunctional SERS substrate at pollutant detection and catalytic reaction may have potential applications in wide aspects.193