Preparation Of Plant Photothermal Conversion Materials And Study On Water Treatment Performance

Photothermal conversion materials with high light absorption properties are the key and basis for realizing efficient solar energy photothermal conversion.Among many materials that have been explored and prepared,carbon-based materials with wide sources,low prices and simple preparation methods have attracted extensive attention from researchers.This study is based on natural plants as the main material,through the surface carbonization or full carbonization treatment,and further load MOS2,etc.,to prepare materials with excellent photothermal conversion performance.The properties of the material,such as water evaporation,photocatalytic degradation of organic pollutants and removal of heavy metal ions,were systematically characterized.The results show that the material will have potential application prospects in seawater desalination,sewage treatment and other fields.The research of this paper includes the following three aspects:1.Take natural wood as the base material,cut it into thin slices of a certain thickness along the radial direction,carbonize its surface,prepare six kinds of photothermal conversion materials,test the materials by XRD,contact Angle,infrared,ultraviolet and so on,and further apply the material to water evaporation test.The results show that the photothermal conversion material based on pine wood has the highest photothermal conversion efficiency,and the water purification performance of carbonized pine wood is studied.2.Photothermal conversion materials were prepared by compounding molybdenum disulfide with fully carbonized ganoderma lucidum.Scanning electron microscope(SEM)test shows that the composite has rich pore structure,and uv absorption spectrum test shows that the absorbance of the composite is much higher than that of the uncarbonized material.Furthermore,rhodamine B and methyl orange were used as model dyes to test the photocatalytic degradation of organic pollutants,and the test showed that the material had excellent removal performance.Meanwhile,the removal performance of Cu²⁺,Ni²⁺,Co²⁺,Zn²⁺,Mn²⁺,Cd²⁺and other heavy metal ions in the process of photothermal conversion was also tested.3.With cheap and easy to obtain corn cob as raw material,cut the required size along the radial direction,complete carbonization treatment,carbonized corn cob photothermal conversion material.The properties of the materials were tested by SEM,IR and UV.The removal performance of dyes and heavy metal ions was further tested.