Colloid size distribution

Rees, T.F. (1990) Comparison of photon correlation spectroscopy with photosedimentation analysis for the determination of aqueous colloid size distributions. Water Resour. Res., 26, 2777-2781. 

The shape of the colloid size distribution during the fragmentation process thus determines the nature and rate of fragmentation. The mass frequency... 

Rowell and co-workers [62-64] have developed an electrophoretic fingerprint to uniquely characterize the properties of charged colloidal particles. They present contour diagrams of the electrophoretic mobility as a function of the suspension pH and specific conductance, pX. These fingerprints illustrate anomalies and specific characteristics of the charged colloidal surface. A more sophisticated electroacoustic measurement provides the particle size distribution and potential in a polydisperse suspension. Not limited to dilute suspensions, in this experiment, one characterizes the sonic waves generated by the motion of particles in an alternating electric field. O Brien and co-workers have an excellent review of this technique [65]. 

Even when carefully prepared, model colloids are almost never perfectly monodisperse. The spread in particle sizes, or polydispersity, is usually expressed as the relative widtli of tire size distribution,... 

Peng Z G, Wickham J and Alivisatos A P 1998 Kinetics of ll-VI and lll-V colloidal semiconductor nanocrystal growth focusing of size distributions J. Am. Chem. Soc. 120 5343... 

The vibratoiy-tube mill is also suited to wet milhng. In fine wet milling this narrow residence time distribution lends itself to a simple open circuit with a small throughput. But for tasks of grinding to colloid-size range, the stirred media mill has the advantage. 

Kaye, An Electron Microscope Method for the Determination of the Particle Size Distribution and Particle Shape of Colloidal and Ball-Milled Lead Azide , PATR 2133 (1955) 25a) A.T. 

Hines, M. A. and Scholes, G. D. (2003). Colloidal PbS Nanocrystals with Size-Timable Near-Infrared Emission Observation of Post-Synthesis Self-Narrowing of the Particle Size Distribution. Adv. Mater. 15 1844-1849... 

Fulda and Tieke [77] studied the effect of a bidisperse-size distribution of latex particles on the structure of the resulting LB monolayer. For this purpose, a mixed colloidal solution of particles la and lb was spread at the air-water interface. Particles la had a diameter of 434 nm, particles lb of 214 nm. The monolayer was compressed, transferred onto a solid substrate, and viewed in a scanning electron microscope (SEM). In Figure 10, SEM pictures of LB layers obtained from various bidisperse mixtures are shown. 

Peng X, Wickham J, Ahvisatos AP (1998) Kinetics of 11-VI and III-V colloidal semiconductor nanocrystal growth Focusing of size distributions. J Am Chem Soc 120 5343-5344... 

The alkaline EG synthesis method has been successfully applied to the preparation of unprotected bimetallic nanocluster colloids with controllable composition. Figure 3 shows the TEM image of bimetallic Pt/Ru nanoclusters (Pt/Ru molar ratio = 1 1.9, total metal concentration 1.85 g/1) with an average particle size of 1.9 nm and a size distribution from 1.4 to 2.4 nm. XRD pattern of the bimetallic nanoclusters is shown in Figure... 

Xin and co-workers modified the alkaline EG synthesis method by heating the metal hydroxides or oxides colloidal particles in EG or EG/water mixture in the presence of carbon supports, for preparing various metal and alloy nanoclusters supported on carbon [20-24]. It was found that the ratio of water to EG in the reaction media was a key factor influencing the average size and size distribution of metal nanoparticles supported on the carbon supports. As shown in Table 2, in the preparation of multiwalled carbon nanotube-supported Pt catalysts... 

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