colloidal stability and zeta potential

Aug 13th, 2016
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Colloidal Stability ofNanosols & Zeta Potential---------------TTL 740Lecture 9 & 10Dr. Mangala Joshi``````Gold (+) has a distinct and characteristic plasmon peak foreasy detection.Gold (+) is ideal for applications that require ultra-small,water-dispersible gold particles. Gold (+) nanoparticlescan be conjugated to proteins and antibodies using EDC(carbodiimide) coupling chemistry.Use preferably under moderate pH conditions.Appearance: Deep red suspensionUV Absorption wavelength: 520 nmpH: 5 - 7Particle Size: TEM 1 - 10 nm (90%)Metal Content, by ICP: > 97% AuAmine-functionalized Au nanoparticlesuspension, stabilized by(metals, excluding Na)poly(quaternary ammonium).Structure, XRD: Fcc (Fm-3m)1-10 nm particle size, 1.5 mg/mL in water.CNTs are highly inert and stable innature, hence does not disperse inliquids.To disperse it in liquids, it is importantto functionalize the surface of CNTs bysome oxygen containing groups,which in turn makes these CNTshydrophilic.Carbon NanotubeSuspension ( CNT)CNT based nanofluidsIn this nanoparticle suspension,thermal properties are greatlydetermined by the size of thesuspended solid particles.These nanofluids have tremendousapplications in future industries ascoolant, refrigerating liquid and inbattery industry.```Stability of Nanosols is extremelyimportantConcepts of colloids and its stability areuseful in making stable nanoparticledispersions / nanosols / nanofluidsNan

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