Surface charge
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Self-assembled functional nanomaterials with electromagnetic (EM) hot spots and chemical (CM) enhancement have been recognized as a key in surface-enhanced Raman scattering (SERS) analysis. Herein, a dual-hybrid plasmonic coupling SERS sensor composed of rutile TiO2 nanorod arrays (r-TNRs), Au nanospheres (AuNSs), and Ag nanocubes (AgNCs) has been designed to achieve ultrasensitive detection and obtain unique molecular fingerprints.
13p visergeyne 18-06-2024 0 0 Download
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Our research unveils the synthesis of BiVO4-Bi2O3 triangular sheet composites, demonstrating their impact on charge separation ability under visible light irradiation. We found that composites with optimal BiVO4 content exhibit enhanced photocurrent density, reduced interfacial resistance, prolonged carrier life, increased surface active sites, improved charge transfer efficiency, and carrier concentration.
14p visergeyne 18-06-2024 1 0 Download
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Surface-enhanced Raman spectroscopy (SERS) is a powerful technique for identifying molecular species, but it has been primarily limited to noble metal supports. This study clarified the SERS mechanism based on semiconductor material - ZnO microtube in probing methylene blue (MB) as an equal contribution of charge transfer and SPR mechanisms.
10p viambani 18-06-2024 1 1 Download
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According to the batch experiments, the adsorption isotherms and the adsorption kinetics for these mesoporous materials are well fitted with the nonlinear Langmuir model and the nonlinear pseudo-second-order model, respectively. Among them, CuFe2O4 powder showed the best phosphate adsorption performance with the maximum P adsorption capacity of 27.49 mgP g-1 , which can be assigned to the highest surface area and the high pH value at its point of zero charge.
7p dianmotminh02 03-05-2024 6 1 Download
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In this study, we present the experimental evidence demonstrating the utility of electrical double layer (EDL)-induced ion accumulation, using sodium (Na+) ion in water as a model substance, on a negatively charged nanostructured surface, specifically thermally grown silicon dioxide (SiO2). This novel approach, termed Ion Surface Accumulation (ISA), aims to enhance the performance of nanostructured porous silicon (PSi) interferometers in optical refractometric applications.
11p dianmotminh02 03-05-2024 7 1 Download
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Three chalcones with a 2,3-dihydrobenzofuran linkage were analyzed by applying the density functional theory (DFT) and B3LYP approach with the 6-311G(d,p) basis set in this report. Spectroscopic and theoretical analyses were used to examine the structures of these three chalcones. The chalcone molecules' HOMO-LUMO energy was determined. Chemical reactivity parameters and molecular electrostatic surface potential (MESP) plots were obtained to gain useful insight into the distribution of charge density.
11p dianmotminh02 03-05-2024 3 2 Download
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Ebook "Surface chemistry of aqueous corrosion processes" starts with a timely and in-depth review of Acid-Base Properties of Surface Oxide Films. Acid-base properties are significant in various surface phenomena such as general and localized corrosion, corrosion inhibition by organic molecules, and the adhesion of organic polymers to oxide-covered metals. This review also discusses the relationship between the two measures of surface charge, the isoelectric point of the oxide film and the potential of zero charge of the oxide-covered metal.
96p tracanhphuonghoa1007 22-04-2024 4 2 Download
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Ebook "Practical aspects of computational chemistry IV" covers recent developments and current applications covering nanomaterials, hydrogen-bonded clusters, semiempirical local coupled-cluster theory, charge-transfer coupling, ro-vibrational energy levels, relativistic effects and quantum electrodynamics in chemistry, mechanochemistry, passivation on metal oxide surfaces, and nano-QSAR.
400p tracanhphuonghoa1007 22-04-2024 3 3 Download
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Ebook "Polyelectrolyte complexes in the dispersed and solid state I: Principles and theory" is intended to extend the content of this former chapter by bringing together selected state-of-the-art contributions on principles and theory. Progress and new knowledge on theoretical aspects of electrosorption phenomena between PEL and oppositely charged surfaces and of the practically always apparent aggregation and clustering tendency of PEC particles are reviewed.
236p tudohanhtau1006 29-03-2024 6 1 Download
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Ebook "Investigation into high efficiency visible light photocatalysts for water reduction and oxidation" describes novel strategies for the rational design of several cutting-edge high-efficiency photocatalysts, for applications such as water photooxidation, reduction, and overall splitting using a Z-Scheme system.
170p tudohanhtau1006 29-03-2024 4 1 Download
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Ebook "Handbook of sample preparation for scanning electron microscopy and X-ray microanalysis" would not have been possible without the help of many people. I am privileged to have been working in this field for the past 45 years and am indebted to the many friends and colleagues from all over the world who have listened to my ideas, corrected my errors, and provided practical advice.
329p coduathanh1122 27-03-2024 3 1 Download
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Part 2 book "The feynman lectures on physics (Vol 2)" includes contents: AC circuits, cavity resonators, waveguides, electrodynamics in relativistic notation, lorentz transformations of the fields, field energy and field momentum, electromagnetic mass, the motion of charges in electric and magnetic fields, the internal geometry of crystals, tensors, refractive index of dense materials, reflection from surfaces, the magnetism of matter,... And other contents.
294p muasambanhan08 04-03-2024 4 1 Download
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This paper presents the design of a 300W charger for lead-acid battery charging applications. It focuses on achieving higher efficiency, increased power and component density, and cost-effectiveness.
8p vimichaelfaraday 28-12-2023 7 4 Download
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Ultrasmall superparamagnetic iron oxide (USPIO) nanoparticles are of potential magnetic resonance imaging (MRI) contrast agents for tumor diagnosis. However, ultrasmall particle size or negative surface charge lead to relative short half-life which limit the utilization of USPIO for in vivo MRI contrast agents.
10p vileonardodavinci 23-12-2023 4 2 Download
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Continued part 1, part 2 of ebook "Electric powertrain: Energy systems, power electronics and drives for hybrid, electric and fuel cell vehicles" provides readers with contents including: surface-permanent-magnet AC machines; interior-permanent-magnet AC machine; power electronics; electromagnetism; DC-DC converters; isolated DC-DC converters; traction drives and three-phase inverters; control of the electric drive;...
283p dangsovu 20-10-2023 14 7 Download
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In the present study, for the first time, photodegradation of lindane compared with adsorption technique in water environment using synthesized TiO2-NPs was investigated. Some effective parameters for lindane removal by photocatalyst were systematically optimized. The mechanism of lindane removal using TiO2-NPs is also suggested on the basis of degradation kinetic and the change in surface charge.
5p viengels 25-08-2023 5 3 Download
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The high capacity electrode material design with rapid charging/discharging and long life capability has become a critical issue and main concern in recent years. Nickel oxide (NiO) has received much attention in the field of energy storage as a cathode electrode material owing to its layered structure with large spacing, crystal structure, and high specific surface area.
10p viberbers 09-08-2023 4 3 Download
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While triboelectric nanogenerators (TENGs) made of biomaterials are becoming significant components of self-charged monitoring healthcare systems, most of them show low output performance and poor durability. Herein, a surfactant-free graphene oxide-polylactic acid (GO/PLA) nanocomposite with customizable honeycomb patterns was, for the first time, prepared via a scalable two-step solution method to achieve a power-boosted biocompatible TENG.
8p viberbers 09-08-2023 4 3 Download
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The surface modification of synthesized nano-BaTiO3 particles was carried out using g-aminopropyl trimethoxy silane (g-APS) in an ethanol/water solution. The modified particles were characterized by FTIR, TGA, surface charge analysis, and by dielectric constant measurement.
8p viberbers 09-08-2023 4 3 Download
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The properties of Rayleigh-type surface wave in a linear, homogeneous and transversely isotropic nonlocal micropolar piezoelectric solid half-space are explored. Dispersion relations for Rayleigh-type surface wave are derived for both charge free and electrically shorted cases.
13p viwolverine 11-07-2023 5 2 Download