作者: Huanhuan Xu , Lihe Yan , Yang Yu , Yanmin Xu
DOI: 10.1016/J.APSUSC.2018.07.006
关键词: Irradiation 、 Wavelength 、 Ultraviolet light 、 Silver nanoparticle 、 Electron 、 Carbon 、 Optical limiting 、 Photochemistry 、 Electron acceptor 、 Materials science
摘要: Abstract Photoexcited carbon nanodots (CDs) could be both excellent electron donors and acceptors, offering potential applications in photochemical reactions. Using the CDs as reductant, carbon-supported silver nanoparticles (Ag-CDs) are synthesized by ultraviolet light irradiation. The influence of surface chemical structure CDs, irradiation wavelength, reaction time, reactant concentration on products systematically studied. a nanosecond laser, we investigate nonlinear optical response as-prepared Ag-CDs, which show limiting (OL) behaviors. OL threshold Ag-CDs is estimated to 0.6 J/cm2, much lower than that with 2.2 J/cm2. mechanism material mainly attributed enhanced scattering effect induced synergistic (Ag NPs) supporting CDs.