Category

Particles

ApplicationCharacterizationCustomer publicationsInorganic materialsMaterialNanoparticles & colloidsParticlesPorous materialSAXSShapeTechnique

Monodisperse hollow silica spheres: An in-depth scattering analysis

Ruckdeschel, Pia; Dulle, Martin; Honold, Tobias; Förster, Stephan; Karg, Matthias; Retsch, Markus

Herein, we fabricate hollow silica nanoparticles with exceptionally narrow size distributions that inherently possess two distinct length scales—tens of nanometers with regards to the shell thickness, and hundreds of nanometers in regards to the total diameter. We characterize these structures using dynamic and static light scattering (DLS and SLS), small…
Xenocs
12 March 2019
(Natural) polymersApplicationCharacteristic dimensionCharacterizationCustomer publicationsMaterialNanoparticles & colloidsOil & gasParticlesPolymer researchPorous materialSAXSTechnique

Polymer-Grafted Nanoparticle Membranes with Controllable Free Volume

Bilchak, Connor R.; Buenning, Eileen; Asai, Makoto; Zhang, Kai; Durning, Christopher J.; Kumar, Sanat K.; Huang, Yucheng; Benicewicz, Brian C.; Gidley, David W.; Cheng, Shiwang; Sokolov, Alexei P.; Minelli, Matteo; Doghieri, Ferruccio

Polymer-based membranes play a key role in several industrially important gas separation technologies, e.g., removing CO2 from natural gas, with enormous economic and environmental impact. Here, we develop a novel hybrid membrane construct comprised entirely of nanoparticles grafted with polymers. These membranes are shown to have broadly tunable separation performance…
Xenocs
12 March 2019
ApplicationCharacterizationCustomer publicationsInorganic materialInorganic materialsMaterialNanoparticles & colloidsParticlesSAXSShapeTechnique

Conduction Band Fine Structure in Colloidal HgTe Quantum Dots

Hudson, Margaret H.; Chen, Menglu; Kamysbayev, Vladislav; Janke, Eric M.; Lan, Xinzheng; Allan, Guy; Delerue, Christophe; Lee, Byeongdu; Guyot-Sionnest, Philippe; Talapin, Dmitri V.

HgTe colloidal quantum dots (QDs) are of interest because quantum confinement of semimetallic bulk HgTe allows one to synthetically control the bandgap throughout the infrared. Here, we synthesize highly monodisperse HgTe QDs and tune their doping both chemically and electrochemically. The monodispersity of the QDs was evaluated using small-angle X-ray…
Xenocs
12 March 2019
ApplicationCharacterizationCustomer publicationsInorganic materialInorganic materialsMaterialMetalsNanoparticles & colloidsParticle size and size distributionParticlesSAXSShapeTechnique

Quantitative Analysis of Semiconductor Nanocrystal Ensemble Optical Extinction

Staller, Corey M.; Agrawal, Ankit; Gibbs, Stephen L.; Cabezas, Camila A. Saez; Johns, Robert W.; Milliron, Delia J.

The optical extinction coefficients of localized surface plasmon resonance (LSPR) in doped semiconductor nanocrystals (NCs) have intensities determined by the free charge carrier concentration and the mechanisms for damping the oscillation of those free carriers. We investigate the dependence of the extinction coefficient of tin-doped indium oxide (ITO) NCs on…
Xenocs
12 March 2019
ApplicationCatalystsCharacterizationCustomer publicationsInorganic materialsMaterialNanoparticles & colloidsParticle size and size distributionParticlesPhase analysisPorous materialSAXSTechnique

Highly Selective Continuous Flow Hydrogenation of Cinnamaldehyde to Cinnamyl Alcohol in a Pt/SiO2 Coated Tube Reactor

Bai, Yang; Cherkasov, Nikolay; Huband, Steven; Walker, David; Walton, Richard; Rebrov, Evgeny;

A novel continuous flow process for selective hydrogenation of α, β-unsaturated aldehyde (cinnamaldehyde, CAL) to the unsaturated alcohol (cinnamyl alcohol, COL) has been reported in a tube reactor coated with a Pt/SiO2 catalyst. A 90% selectivity towards the unsaturated alcohol was obtained at the aldehyde conversion of 98.8%. This is…
Xenocs
12 March 2019