Category

Phase analysis

ApplicationCharacterizationCustomer publicationsInorganic materialInorganic materialsMaterialOil & gasPhase analysisSAXSTechnique

Partial Transformation of Imogolite by Decylphosphonic Acid Yields an Interface Active Composite Material

Lange, Tobias; Charpentier, Thibault; Gobeaux, Frédéric; Charton, Sophie; Testard, Fabienne; Thill, Antoine

The phosphonic acid moiety is commonly used as an anchoring group for the surface modification of imogolite. However, the impact of the reaction on its structure has never been clearly analyzed before. We study the reaction of imogolite and decylphosphonic acid by combining infrared spectroscopy, X-ray scattering, scanning electron microscopy,…
sergio.rodrigues@xenocs.com
18 July 2019
(Natural) polymersApplicationCharacterizationCrystalline fractionCustomer publicationsMaterialPhase analysisPolymer researchSAXSTechniqueTemperatureWAXS

Simultaneous SAXS-WAXS Experiments on Semi-Crystalline Polymers: Example of PA11 and Its Brill Transition

Tencé-Girault, Sylvie; Lebreton, Sylvie; Bunau, Oana; Dang, Patrick; Bargain, François

This manuscript of the special issue “Microstructural Evolution and Mechanical Behavior of Semi-Crystalline Polymers” aims to show that Small Angle X-ray Scattering (SAXS) and Wide Angle X-ray Scattering (WAXS) experiments performed simultaneously constitute a unique tool to obtain valuable information on the hierarchical structure of semi-crystalline polymers. These structural quantitative…
sergio.rodrigues@xenocs.com
18 July 2019
ApplicationCharacterizationCustomer publicationsMaterialNanoparticles & colloidsParticle size and size distributionParticlesPhase analysisSAXSShapeSizeTechniqueWAXS

Combining Small-Angle X-ray Scattering and X-ray Powder Diffraction to Investigate Size, Shape and Crystallinity of Silver, Gold and Alloyed Silver-Gold Nanoparticles

Garcia, P. R. A. F.; Loza, K.; Daumann, S.; Grasmik, V.; Pappert, K.; Rostek, A.; Helmlinger, J.; Prymak, O.; Heggen, M.; Epple, M.; Oliveira, C. L. P.

The combination of simultaneous measurements of small and wide angle X-ray scattering (SAXS/WAXS–SWAXS) to investigate the overall size, shape, and crystallinity of silver nanoparticles and alloyed silver-gold nanoparticles in the size range of 8 to 80 nm is shown. The obtained results for overall size are in agreement with the…
sergio.rodrigues@xenocs.com
18 July 2019
ApplicationCharacterizationCustomer publicationsInorganic materialInorganic materialsMaterialParticlesPhase analysisTechniqueWAXS

Residual Silver Remarkably Enhances Electrocatalytic Activity and Durability of Dealloyed Gold Nanosponge Particles

Li, Guangfang Grace; Lin, Ye; Wang, Hui

Percolation dealloying of multimetallic alloys entangles the selective dissolution of the less-noble elements with nanoscale restructuring of the more-noble components, resulting in the formation of spongelike, nanoporous architectures with a unique set of structural characteristics highly desirable for heterogeneous catalysis. Although the dealloyed nanoporous materials are compositionally…
sergio.rodrigues@xenocs.com
18 July 2019
ApplicationCharacterizationCustomer publicationsInorganic materialInorganic materialsMaterialParticlesPhase analysisTechniqueWAXS

Multifaceted Gold–Palladium Bimetallic Nanorods and Their Geometric, Compositional, and Catalytic Tunabilities

Sun, Lichao; Zhang, Qingfeng; Li, Guangfang Grace; Villarreal, Esteban; Fu, Xiaoqi; Wang, Hui

Kinetically controlled, seed-mediated co-reduction provides a robust and versatile synthetic approach to multimetallic nanoparticles with precisely controlled geometries and compositions. Here, we demonstrate that single-crystalline cylindrical Au nanorods selectively transform into a series of structurally distinct Au@Au–Pd alloy core–shell bimetallic nanorods with exotic multifaceted geometries…
sergio.rodrigues@xenocs.com
18 July 2019
ApplicationCharacterizationCustomer publicationsInorganic materialInorganic materialsMaterialParticlesPhase analysisTechniqueWAXS

Overcoming the Interfacial Lattice Mismatch: Geometry Control of Gold–Nickel Bimetallic Heteronanostructures

Li, Guangfang Grace; Blom, Douglas A.; Pandey, Shubham; Koch, Robert J.; Misture, Scott T.; Phillpot, Simon R.; Wang, Hui

Seed-mediated heteroepitaxial growth provides a versatile synthetic approach to a diverse set of geometrically distinct bimetallic heteronanostructures. In bimetallic nanocrystal systems, interfacial heteroepitaxial growth typically occurs between structurally similar metals with lattice mismatch below 5%, whereas controlled epitaxial growth of bimetallic nanocrystals comprising metals with…
sergio.rodrigues@xenocs.com
18 July 2019
(Natural) polymersApplicationCharacterizationCustomer publicationsMaterialOrientation analysisPhase analysisPolymer researchSAXSTechnique

The role of fast and slow processes in the formation of structure and properties of thermoplastic polyurethanes

Anokhin, D. V.; Gorbunova, M. A.; Estrin, Ya I.; Komratova, V. V.; Badamshina, E. R.

New multi-blocked thermoplastic polymers containing rigid polyurethane-urea and soft polydiethylene glycol adipate blocks have been synthesized. Basic features of their structure formation have been revealed. Three types of supramolecular organization have been found, which define the behavior of samples under heating and deformation conditions. The shape memory effect has been…
sergio.rodrigues@xenocs.com
18 July 2019
ApplicationCharacterizationCustomer publicationsMaterialPhase analysisPorous materialRenewable energySAXSTechnique

Acid Induced Self-Assembly Strategy to Synthesize Ordered Mesoporous Carbons from Biomass

Xu, Fan; Chen, Yiqing; Tang, Minghui; Wang, Haiyan; Deng, Jiang; Wang, Yong

Hydrothermal carbonization of biomass is an economic and sustainable technique for the fabrication of functional carbonaceous materials. However, the introduction of biomass into synthesis of ordered mesoporous carbon materials achieves slow progress due to complicated requirements. It is still challenging to prepare biomass-derived ordered mesoporous carbon materials. Herein, we report…
sergio.rodrigues@xenocs.com
18 July 2019
ApplicationCharacterizationCustomer publicationsInorganic materialsMaterialPhase analysisPorous materialSAXSTechnique

A vesicle-aggregation-assembly approach to highly ordered mesoporous γ-alumina microspheres with shifted double-diamond networks

Liu, Yang; Teng, Wei; Chen, Gang; Zhao, Zaiwang; Zhang, Wei; Kong, Biao; N. Hozzein, Wael; Abdulkareem Al-Khalaf, Areej; Deng, Yonghui; Zhao, Dongyuan

Alumina materials have widely been used in industrial fields, such as catalysis and adsorption. However, due to the fast sol–gel process and complicated crystalline-phase transformation, the synthesis of alumina materials with both highly ordered mesostructures and crystallized frameworks remains a great challenge. Herein, we report a novel vesicle-aggregation-assembly strategy to…
sergio.rodrigues@xenocs.com
18 July 2019
(Natural) polymersApplicationCharacterizationCustomer publicationsMaterialPhase analysisPolymer researchSAXSTechnique

Sticky ends in a self-assembling ABA triblock copolymer: the role of ureas in stimuli-responsive hydrogels

T. Shafranek, Ryan; D. Leger, Joel; Zhang, Song; Khalil, Munira; Gu, Xiaodan; Nelson, Alshakim

Directing polymer self-assembly through noncovalent interactions is a powerful way to control the structure and function of nanoengineered materials. Dynamic hydrogen bonds are particularly useful for materials with structures that change over time or in response to specific stimuli. In the present work, we use the supramolecular association of urea…
sergio.rodrigues@xenocs.com
18 July 2019