The Synthesis And Characterization Of Carbon-based Photocatalytic Materials

Carbon-based photocatalytic material’s structure and performance isvaried. The study of it has a certain theoretical value. As the carbon-based material,grapheme owing grapheme’s specifial electron transport characteristics, and thenimproving the conductivity of graphene compound photocatalyst. Graphene has a largespecific surface area, make photocatalyst of loading more advantages. Graphenecomposites take chemical modification make the band more energy gap by doping, thusenhancing its physical and chemical properties. Meanwhile,it has a certain practicalapplication value that to explore a more simple method of the preparation of copperoxide/activated carbon photocatalyst.This paper aims to study the synthesis and characterization of carbon-basedphotocatalytic materials， search for new synthetic methods， and study its internalstructure.The preparation method of the operation is simple in this paper. It can providereference for preparing the similar graphene composite materials and copperoxide/activated carbon photocatalyst, it has the value of practical application.The green preparation of graphene and its composites as well as copperoxide/activated carbon catalytic agent is the important exploring frontiers. According to thepassage, we consider a method of preparation and characterization. Adopting threedifferent method preparating graphite oxide and graphene, and synthesize gold-titaniumdioxide/graphene composites by six different methods. And researching a new solid-statemethod at room temperature syntheze the copper oxide/activated carbon,its preparation issimple and environment friendly. And adopting XRD、FT-IR and SEM characterizationmethod. Analytic composites and morphology of the graphene and its composites,so that tocopper oxide/activated carbon. Using the improved Hummers method, preparate graphiteoxide, reduce the reaction time and temperature, it reflects the simple green chemicalmethod. Also this paper studied the improved hydrothermal synthesis method to synthesizegold-titanium dioxide/graphene composites, reduce the reaction time and temperature,this method owe the advantages of high loading, strong stability, uniform particledispersion. Meanwhile, we adopt a new solid phase mehod at room temperature to synthesize copper oxide/activated carbon supported photocatalyst, get rid of the reactiontemperature and time, make it fast, simply, safely, low consumption, inexpensive,environmental, reflect the characteristics of the green synthesis, provide a new method forindustrial production.The work and conclusion of this paper:1. The preparation and characterization of graphite oxide and grapheneWe Adopte the Hummers oxidation-reduction method, it via intercalation in the layerat Low temperature, oxidation at medium temperature, and hydrolysis reaction at hightemperature, finally we successfully prepared the graphene oxide, then obtain the graphenenanoparticles in the reduction process. The experiment result is that: The preparationmethod of advance oxidation stage is better than preparating grapheme and graphite oxide.2. The preparation and characterization of gold-titanium dioxide/graphene compositematerialTetrabutyl titanate as titanium source, via improved hydrothermal synthesis methodsynthesize a series of titanium dioxide/graphene composite, then take single-step reductionmethod synthesize gold-titanium dioxide/graphene composite photocatalyst. And by virtueof XRD, SEM and FT-IR et al characterization methods analysis and research itscompound ingredients, structure and morphology. Study the influence of factors as theloading of the catalyst, power of hydrogen, reaction time and reaction temperature.3. The preparation and characterization of copper oxide/activated carbon supportedphotocatalyst via solid-state reaction at room temperatureAdopting new type of solid-state reaction at room temperature synthesize the differentloading of copper oxide/activated carbon supported photocatalyst.It is more energyconservation, green and enviroment protected, and characterizing.