Catalytic Oxidation-Based Nanoplasmonic Sensors Of Organics

The development of industrial and agricultural technology has brought serious pollution to the environment,thus affecting people's quality of life and the sustainable development of cities.In the numerous pollution treatment technology about water,as a novel purification technology,photocatalytic oxidation and Fenton catalytic reactivity has fast degradation,mild reaction conditions,no two pollution and wide application in organic matter degradation,are widely used as organics treatment.In this paper,two kinds of sensors are prepared based on the pHotocatalytic oxidation and Fenton catalytic oxidation,combine catalytic performance and sensing property and using nanoplasmonic sensor as detection tools for the purpose of detecting the oxidative degradation of organic matter in water in situ spectrum.In photocatalytic oxidation,a simple mixing of the 10 nm gold sol,the pretreated TiO₂ sol and C₆0,composited the Au/TiO₂/C₆0 film by the Dip-coater.Au plasmonic resonance absorption peak and the absorption peak of C₆0 were observed through UV-Vis spectra,the composition of nanocomposite materials was obtained by XRD,Au and TiO₂ nanoparticles were observed by SEM,the characteristic absorption peak at 1104cm^-1 and 1453cm^-1 of C₆0 can be obviously distinguished and the photocatalytic performance was observed.A nanoplasmonic sensing system for detection of organic matter was developed,the relation model between the swing frequency of plasmonic resonance absorption peak and different reaction conditions is established through the fluctuation of the nanoplasmonic maximum absorption wavelength.In Fenton catalysis,HAuCl₄·4H₂O was reduced through chemical reduction forming the gold gel,the complex-Au/Fe₃O₄ was prepared by co precipitation method when the precursor solution of iron was existed in the Au solution.The absorption peak of Au can be observed through the visible spectra.The diffraction peak of complex was obtained by XRD,the introduction of Au had not affected the crystal phase of complex and the photocatalytic performance was observed.A nanoplasmonic sensing system for detection of organic matter was developed,the relation model between the swing frequency of plasmonic resonance absorption peak and different reaction conditions is established through the fluctuation of the nanoplasmonic maximum absorption wavelength.