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Related papers: Towards the surface hydroxyl species in CeO$_2$ na…

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Applications of nanoparticles in biology require that the nanoparticles remain stable in solutions containing high concentrations of proteins and salts, as well as in cell culture media. In this work, we developed simple protocols for the…

Soft Condensed Matter · Physics 2009-07-07 B. Chanteau , J. Fresnais , J. -F. Berret

Nanowires play a pivotal role across a spectrum of disciplines such as nanoelectromechanical systems, nanoelectronics, and energy applications. As nanowires continue to diminish in dimensions, their mechanical characteristics are…

Materials Science · Physics 2023-08-29 Sina Zare Pakzad , Mohammad Nasr Esfahani , B. Erdem Alaca

We have investigated the electronic structure of nano-sized iron oxide by scanning tunnelling microscopy (STM) and spectroscopy (STS) as well as by photoelectron spectroscopy. Nano particles were produced by thermal treatment of Ferritin…

Materials Science · Physics 2009-11-11 M. Preisinger , M. Krispin , T. Rudolf , S. Horn , D. R. Strongin

Water interactions with oxygen-deficient cerium dioxide (CeO$_2$) surfaces are central to hydrogen production and catalytic redox reactions, but the atomic-scale details of how defects influence adsorption and reactivity remain elusive.…

We report the co-assembly and adsorption properties of coacervate complexes made from polyelectrolyte-neutral block copolymers and oppositely charged nanocolloids. The nanocolloids put under scrutiny were ionic surfactant micelles and…

We present an ab initio investigation of the interaction between methane, its dehydrogenated forms and the cerium oxide surface. In particular, the stoichiometric CeO2(111) surface and the one with oxygen vacancies are considered. We study…

Materials Science · Physics 2019-11-21 Marco Fronzi , Simone Piccinin , Bernard Delley , Enrico Traversa , Catherine Stampfl

GaAs/Fe$_{3}$Si core/shell nanowire structures were fabricated by molecular-beam epitaxy on oxidized Si(111) substrates and investigated by synchrotron x-ray diffraction. The surfaces of the Fe$_3$Si shells exhibit nanofacets. These facets…

Materials Science · Physics 2016-05-19 Bernd Jenichen , Michael Hanke , Maria Hilse , Jens Herfort , Achim Trampert , Steven C. Erwin

Anionic surfactants based on fatty acids are usually used to modify the particle surface properties of CaCO$_3$ with the aim to enhance its dispersion and compatibility with polymer matrices. In this study sodium oleate was used for the…

Nanocrystalline materials exhibit properties that can differ substantially from those of their single crystal counterparts. As such, they provide ways to enhance and optimise their functionality for devices and applications. Here we report…

Understanding the oxidation and reduction mechanisms of catalytically active transition metal nanoparticles is important to improve their application in a variety of chemical processes. In nanocatalysis the nanoparticles can undergo…

Chemical Physics · Physics 2017-05-18 Alec Lagrow , Michael Ward , David Lloyd , Pratibha Gai , Edward Boyes

The silicon suboxide SiOx (x<2.0) offers promising industrial application possibilities ranging from electrodes in lithium-ion batteries, which are used widely in electrical vehicles and portable devices to sensing applications. Therefore,…

Materials Science · Physics 2025-03-18 Seref Kalem

Conical nanopores in amorphous SiO$_{2}$ thin films fabricated using the ion track etching technique show promising potential for filtration, sensing and nanofluidic applications. The characterization of the pore morphology and size…

The hydrothermal carbonation of calcium hydroxide (Ca(OH)2) at high pressure of CO2 (initial PCO2 1/4 55 bar) and moderate to high temperature (30 and 90 1C) was used to synthesize fine particles of calcite. This method allows a high…

Magnetic measurements up to 1000 K have been performed on hydrothermally synthesized $\alpha$-Fe$_{2}$O$_{3}$ nanoparticles (60 nm) using a Quantum Design vibrating sample magnetometer. A high vacuum environment (1$\times$10$^{-5}$ torr)…

Mesoscale and Nanoscale Physics · Physics 2015-05-20 Jun Wang , Wei Wu , Fan Zhao , Guo-meng Zhao

We have studied high temperature thermal behavior of 1H, 1H, 2H, 2H-Perfluorooctyl-trichlorosilane (FOTS) and Octyltrichlorosilane (OTS) molecules self assembled on titanium dioxide (TiO2) nanoparticles using advanced microscopy and…

Materials Science · Physics 2014-10-02 P. Prakash , U. Satheesh , D. Devaprakasam

The process of environmental oxidation is pivotal in determining the physical and chemical properties of two-dimensional (2D) materials. Its impact holds great significance for the practical application of these materials in nanoscale…

Materials Science · Physics 2024-03-20 Soumendra Kumar Das , Lokanath Patra , Prasanjit Samal , Pratap Kumar Sahoo

The X-ray diffraction, Raman and infrared spectroscopies and magnetic measurements were used to explore the correlated changes of the structure, lattice dynamics and magnetic properties of the LuFeO3 nanoparticles, which appear in…

There is considerable interest in the pH-dependent, switchable, biocatalytic properties of cerium oxide (CeO2) nanoparticles (CeNPs) in biomedicine, where these materials exhibit beneficial antioxidant activity against reactive oxygen…

Materials Science · Physics 2024-03-06 Hongyang Ma , Zhao Liu , Pramod Koshy , Charles C. Sorrell , Judy N. Hart

This study investigates the synthesis and luminescence behavior of $\mathrm{Ce_{x}La_{0.95-x}Tb_{0.05}F_{3}}$ nanoparticles with varying $\mathrm{Ce^{3+}}$ content. The materials were prepared via a wet chemical route and thermally annealed…

The adsorption properties of isolated H$_{2}$O molecule on stoichiometric and reduced (with on-surface oxygen vacancy) ceria(1111) surfaces at low coverage are theoretically investigated by using density-functional-theory+\emph{U}…

Materials Science · Physics 2012-02-10 Shuang-Xi Wang , Ping Zhang , Shu-Shen Li