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Showing 1 to 12 of 12 for “"PZC"”.
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Interrogating the Electrochemical Interface Using Sum Frequency Generation Spectroscopy
… way positive of the potential of zero charge (pzc) and oppositely negative of the pzc. At positive potentials a phase change is observed associated with the formation of a condensed layer. These results show that the orientation of small molecule zwitterions can be controlled by applied …
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The Structure of Solvents Confined to Metal Surfaces
… positive of the potential of zero charge (PZC), STM reveals the DMSO solvent structure together with the perchlorate anion. The tetrabutylammoniurn cation can not be seen due to the presence of water in the DMSO solution. With appropriate choice of electrolyte, it may now be possible, by …
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Hydro/Solvothermal Synthesis, Structures and Properties of Metal-Organic Frameworks Based on S-Block Metals
… frameworks, [Ca3(btc)2(H2O)12] (1) and [Ca2(btc)(pzc)(H2O)3] (2) (btc=benzene-1,3,5-tricarboxylate, pzc = pyrazine-2- carboxylate), [Ca(Hbtc)(H2O)]•H2O (6), and [Rb(Hbdc)] (7) have been synthesized using the hydro/solvothermal method and have been characterized using X-ray diffraction, IR, UV-vis, …
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A Comparative Study on the Efficacy of Modified Clay Soil for the Decolouration of Acidic and Basic Textile Dyes: A Case Study
… Infrared (FTIR), and Point of Zero Charge (PZC) revealed that Modified-SMT contained 18.42% Al₂O₃ and 61.08% SiO₂, had a surface area of 35.30 m²/g, and featured functional groups such as C–O, C–O–C, and O–H, with a PZC at pH 4.30. Maximum dye removal efficiencies were recorded at 91.95% for …
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Dispersion of graphene nanoplatelets in water with surfactant and reinforcement of mortar with graphene nanoplatelets
… the surface forces with point of zero charge (PZC) experiments. This research has the potential to improve the future application of GNPs to composite materials. The author also carried out mechanical testing. Notched beams were prepared and tested in three-point bending. The data were then …
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Heterogenous catalysis of inorganic reactions
… A and intact montmorillonite clays, has low pzc but high cation ion exchange capacity and so raises the pH to a relatively high degree by proton/metal cation exchange. The second group consists of oxides with high pzc such as y-alumina, which raise the pH of their surrounding solutions by …
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Direct Force Measurements on the Colloidal Scale: From Modified Electrodes to Particle Manipulation
… the shift of the potential of zero charge (pzc) indicates on the specific ion adsorption in the Stern layer as it alters the charging behaviour of the electrode’s interface. It has been demonstrated that hydronium and hydroxide ions adsorb on both the hydrophobic and hydrophilic interfaces. …
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Iron-Doped Titanium Dioxide Nanomaterials: Synthesis, Characterization and Photodegradation Catalytic Behavior
… in the materials potential of zero charge (PZC) and how surface charge affects the dye adsorption. Using the Langmuir-Hinshelwood model, rate constants (kobs) decreasing with an increase in the molar percentage of iron in TiO2 as well as a decrease in the materials band gap. This trend is …
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Nanoscale Carbon Architectures for Electrode Applications
… analyzed using BET, and point-of-zero-charge (PZC) analysis respectively. The materials produced were formed into thin-film electrodes and their capacitances and resistances were evaluated. The electrical data recorded for each material as well as the characterization of their structure was …
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Examining the Effects of Applied Potential on the Surface Charge of Functionalized Monolayers for Site-Directed Ionic Self Assembly
… and potential stepped more positive than the PZC, ionization was confined ionization to one spot encouraging localized ionic self assembly.
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Preparation, Characterization and Evaluation of Bimetallic Catalysts Prepared by Electroless Deposition Methods
… was maintained above the point of zero charge (PZC) for silica such that electrostatic adsorption or spontaneous deposition of metal on to the support is avoided in the absence of catalytic substrate. </p> <p>These electroless baths were optimized to synthesize a series of each group …
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Advanced Chemical-Mechanical Dewatering of Fine Particles
In the present work, novel dewatering aids and a novel centrifuge configuration were developed and applied for the purpose of dewatering fine particles. Three different types dewatering reagents were tested in different filtration and centrifugation units. These chemicals included low-HLB …