logging in or signing up nanomaterials marolipooja Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINT lite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: Embed: Flash iPad Dynamic Copy Does not support media & animations Automatically changes to Flash or non-Flash embed WordPress Embed Customize Embed URL: Copy Thumbnail: Copy The presentation is successfully added In Your Favorites. Views: 1318 Category: Science & Tech.. License: All Rights Reserved Like it (0) Dislike it (0) Added: March 13, 2013 This Presentation is Public Favorites: 0 Presentation Description brief discription through pictures Comments Posting comment... Premium member Presentation Transcript Chemistry of Nanomaterials : Chemistry of Nanomaterials Pooja .Preparation of Nano particles : Preparation of Nano particles WET CHEMICAL METHODSOL GEL METHOD : SOL GEL METHOD Involves the evolution of inorganic networks through the formation of a colloidal suspension (sol) and Gelation of the sol to form a network in a continuous liquid phase (Gel).PowerPoint Presentation: MOR + H 2 O → MOH + ROH (hydrolysis) MOH + ROM → M-O-M + ROH (condensation)STEPS INVOLVED : STEPS INVOLVED Formation of different stable solutions. Gelation Aging of the gel ( Syneresis ) Drying of the gel Dehydration 800°C Densification and decomposition (T>800°C)PowerPoint Presentation: Fig.1. Schematic representation of sol-gel process of synthesis of nanomaterials .Characterization of Nanomaterials : Characterization of NanomaterialsOptical Microscopes are not for Nanoscale analysis?: Optical Microscopes are not for Nanoscale analysis?PowerPoint Presentation: Typical SEM images of (a) the loosely packed Co 3 O 4 /Co(OH) 2 nanostructures (b) the mesoporous Co 3 O 4 materials SCANNING ELECTRON MICROSCOPYPowerPoint Presentation: Characterization of carbon nanomaterials with transmission electron microscopy (TEM) showing sizes and morphologies TRANSMISSION ELECTRON MICROSCOPYAdvantages : Advantages Improved mechanical strength , physical properties & chemical properties . Decrease in porosities Enhanced thermal stability . Exhibits unusual optical ,magnetic & electrical properties. Exceptional strength , hardness etc .Application : Application Nanocrystalline silicon carbide. Fullerenes Carbon nanotube - Microbial fuel cell Phosphors for HD TV Elimination of Pollutants In therapeutics , gene transformationPowerPoint Presentation: SEM images of surfaces covered with ZnO nanostructures. a ) Core spike particles. b) hollow ZnO spheres. c) Sponge like ZnO structure. d) A higher magnification from a) reveals the long thin spikes with diameters on the nanoscale . e) The higher magnification from b) shows the coverage of the outside of the shells by small nanoscale spikes. f) This higher magnification from c) shows crystalline facets on the surface of the sponge like structure.PowerPoint Presentation: Titanium nanoflower Silver nanocubes SnO2 nanoflower Au nanoparticle Graphene FePt nanosphereREFERENCE : REFERENCE Introduction to Nanomaterials , A.Alagarasi . Nanomaterials , Boxuan Gu and David McQuilling http://www.en.wikipedia.org/wiki/sol-gel http://www.sciencedirect.com/science /article/THANK : THANK YOU You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.