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Showing 1 to 9 of 9 for “"diffuse layer"”.
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Adsorption of sulfate and phosphate at the mineral-water interface: isotherm, stoichiometry, and models
… may not be adsorbed on the d-plane, i.e., in the diffuse layer, whereas both outer- and inner-sphere complexation mechanisms predicted S042- adsorption equally well.
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The Effect Of Colloidal Stability On The Heat Transfer Characteristics Of Nanosilica Dispersed Fluids
… fluids described above. The thickness of the diffuse layer on nano particles was computed and experimentally confirmed in selected conditions for which there was no agglomeration. As the thickness of the diffuse layer decreased due to the increase in salt content or the ionic content, the …
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The structural environments of cations adsorbed onto clays: A cesium-133 MAS NMR spectroscopic study
… if water is present in the interlayer. Above ${\sim}{-}10\sp\circ$C, spectra for slurries of hectorite in CsCl solutions yield two peaks, one due to Cs in solution, and the other due to Cs motionally-averaged on the clay. Below ${\sim}{-}60\sp\circ$C, motional averaging of the …
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Direct Force Measurements on the Colloidal Scale: From Modified Electrodes to Particle Manipulation
… of an electrode modified with an organic layer. In particular the adhesion and ion adsorption have been studied, which are ubiquitous phenomena in the colloid science, electrochemistry, and biology. Moreover, a novel technique has been developed to fabricate chemically and mechanically …
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Controlled Surface Layer Deposition for Steel Surface Hardening
… (1) surface saturation; (2) compression of the diffuse layer, growth of a polymer-rich layer, and/or competition between the mobility of Ti and PDADMAC; and (3) little or no decrease in electrophoretic mobility of Ti, establishment of a polymer-rich layer, and/or dominance of the mobility of the …
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Field methods for rapidly characterizing contaminant mobility in paint waste during bridge rehabilitation
… sorption process was further modeled using the diffuse layer model. Based on an understanding of mechanistic processes along with a demonstrated analysis of variables through principal component analysis (PCA), statistically-based models for leaching from paint waste were developed. Results of …
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High oxygen permeation rates through poly(dimethyl siloxane) for fuel cells and oxygen reduction reaction mechanistic studies
… thickness (and therefore the thickness of the diffuse layer), and control the thickness of the PDMS layer. This in turn allows large, highly controllable and stable ORR currents of a direct formic acid fuel cell (DFAFC) in a fully passive, planar form-factor. Lessons learnt from this DFAFC …
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Surface characterization of self-assembled monolayers for applications of selective ionic transport through nanoporous membranes
… membranes to water desalination. For thin double layers, the volumetric flow ratio (VFR) between electroosmosis and pressure driven flow is inversely proportional to 1⁄r^2 , indicating the advantages of utilizing electrokinetics for systems with small characteristics length scales. Bare solid …
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Understanding and Predicting Water Quality Impacts on Coagulation
… floc surface charge, and particle removal. A diffuse layer (DLM) surface complexation model was formulated to simultaneously predict sorption of NOM and other key species, including silica, calcium, and carbonate alkalinity. Predictions of surface potential were used to estimate zeta potential …