ZnO@ZnS Study On Multiphonon Resonance Raman Scattering And Photoluminescence Properties Of Composite Materials

In recent years,sudden public health and safety issues have had a significant impact on human health and socio-economic development.Biomarker detection is an important means and measure to effectively address this issue.Resonant Raman scattering spectroscopy has good prospects in biomedical development due to its advantages of multi phonon resonance Raman spectral lines,fingerprint recognition of materials,and strong anti-interference ability.However,existing reports have documented a single probe material,which hinders its development in the biomedical field and limits its accuracy and sensitivity.Therefore,this paper selects ZnO as the substrate for composite ZnS,regulates the construction of semiconductor composite materials with dual resonance Raman scattering,expands its detection range,enhances its functionality,optimizes its optical performance,and improves its detection sensitivity.The main research content of this paper is as follows:1.Preparation using two-step hydrothermal method ZnO@ZnS composite materials,first prepare the substrate ZnO nanorods,and then prepare them on this basis ZnO@ZnS compound material.By adjusting the hydrothermal reaction time,the resonance Raman scattering properties of ZnO@ZnS composite were controlled,which made them possess the resonance Raman scattering peaks of both ZnO and ZnS at 325 nm.After a series of characterization analysis,it was successfully prepared ZnO@ZnS.And when the hydrothermal reaction time is 12 h.The composite material exhibits resonance Raman scattering peaks of both substances under excitation at 325 nm.2.Preparation using two-step hydrothermal method ZnO@ZnS composite materials,first prepare the substrate ZnO nanorods,and then prepare them on this basis ZnO@ZnS compound material.By adjusting the hydrothermal reaction temperature for ZnO@ZnS.Make the composite material exhibits resonance Raman scattering peaks of both ZnO and ZnS under excitation at a wavelength of 325 nm.After a series of characterization analysis,it was successfully prepared ZnO@ZnS.And when the hydrothermal reaction reaction temperature of 180 ℃.The composite material exhibits resonance Raman scattering peaks of both substances under excitation at 325 nm.3.Preparation using two-step hydrothermal method ZnO@ZnS compound material.Firstly,prepare the substrate ZnO nanorods and prepare them on the ZnO substrate ZnO@ZnS compound material.By adjusting the concentration of the precursor thioacetamide and zinc acetate,to make the composite material has resonance Raman scattering peaks of two substances at the same time,and outputs two resonance Raman scattering signals.After characterization and analysis,it was successfully prepared ZnO@ZnS compound material.When the concentrations of thioacetamide and zinc acetate are both 85 mmol,ZnO@ZnS composite material exhibits resonance Raman scattering peaks of both substances under excitation at 325 nm,at which time the 1LO and 2LO phonon peaks of the composite material ZnO are evident.