Study On The Preperation、Morphology Control And Applycation Of Metal Nanopaticles Based On Ferrocene And Its Derivative

In recent years,Metal nanoparticles with special optical, catalysis, electrical andmagnetic properties have been the subject of widespread research. The chemical synthesismethods of preparation of metal nanomaterials method is simple, morphology is easy tocontrol. There are certain methodologies such as the preformed-seed-mediated growthapproach, high-temperature polyol synthesis, template-based electrochemical synthesis,photochemical techniques, etc., which are emerging as popular ways of developinganisometric nanoparticles. Based on the preparation and application of nano material it isvery significant to develop the new nano-material preparation methods, realize the metalnanomaterials controlled preparation, explore the electrochemical catalysis, biologicalsensors in the fields.In this thesis, three metal nanopaticles of different morphologies have beensynthesized by ferrocene and its derivative. The influence of the reaction parameter onmorphology have been discussed and study the application of metal nanopaticles inelectro-catalysis,DNA biosense and photocatalysis. The main contents are listed below:The first part is to synthesize gold nanopaticles of electroactive through reducingHAuCl4by sodium borohydride under the protection of（Ferrocenylmethyl）trimethylammonium Bromide. The size and morphology of thesynthesized gold nanopaticles is characterized by scanning electron microscope（SEM）.Thegold nanopaticles was modified on the electrode via self-assembly,and character it byelectrochemical method.Study the property of electro-catalytic towards ascorbic acid.Wefound that the multipod-like gold nanopaticles is uniform,no aggregation and have goodperformance of electro-catalytic ascorbic acid.Also the nano-modified electrode candetect ascorbic acid with high sensitivity.The second part is to synthesize gold nanopaticles with the reduce agent-ferrocene in the soft template of Hexadecyl trimethyl ammonium Bromide.It is found that thesynthesized gold nanopaticles is flower-like,rough surface,which the size is about500nm.The concentrtion ang spcies of the surfactant both have an certain influence on themorphology of the gold nanopaticles. The gold nanoflowers was modified on the electrodevia self-assembly, by using methylene blue（MB） as an electrochemical hybridyzationindicator,the DNA sensing properties is discussed.The third part is to synthesize the precursor of α-Fe₂O₃with anion surfactant-sodium dodecyl benzene sulfonate（SDBS） as the soft template,then the precursor washeated to getα-Fe₂O₃with good crystallinity and study the influence of the reactionparameter on morphology, the photocatalytic property of α-Fe₂O₃was alsoinvestigated.The result shows that with the characterization of X-ray diffraction （XRD）and scanning electron microscopy （SEM）,the crystallinity of α-Fe₂O₃is better than theprecursor.The precursor is hollow nanosperes and the α-Fe₂O₃also keep the morphologyof hollow nanosperes,which have the photocatalytic activity, that can degrade the methylorange solution.