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Emergence of lead halide perovskite colloidal dispersions through aggregation and fragmentation: insights from the nanoscale to the mesoscale

Pratap, Shambhavi; Keller, Elisabeth; Müller-Buschbaum, Peter

ApplicationCharacterizationCustomer publicationsGIWAXSInorganic materialInorganic materialsMaterialOtherOtherTechnique

Emergence of lead halide perovskite colloidal dispersions through aggregation and fragmentation: insights from the nanoscale to the mesoscale

Pratap, Shambhavi; Keller, Elisabeth; Müller-Buschbaum, Peter

The structural and optoelectronic properties of mixed halide perovskite colloidal precursor dispersions are investigated. With increasing concentration, we observe four stages of growing structures, which affect the thin film morphology: (I) nanoparticles, (II) increasing size of nanoparticles, (III) formation of large aggregates/complex clusters and (IV) fragmentation of large…
Revisiting the Dissolution of Cellulose in NaOH as “Seen” by X-rays

Martin-Bertelsen, Birte; Andersson, Erika; Köhnke, Tobias; Hedlund, Artur; Stigsson, Lars; Olsson, Ulf

(Natural) polymersApplicationCharacterizationCustomer publicationsMaterialParticle interactionsPolymer researchSAXSShapeSizeTechnique

Revisiting the Dissolution of Cellulose in NaOH as “Seen” by X-rays

Martin-Bertelsen, Birte; Andersson, Erika; Köhnke, Tobias; Hedlund, Artur; Stigsson, Lars; Olsson, Ulf

Cotton production is reaching a global limit, leading to a growing demand for bio-based textile fibers produced by other means. Textile fibers based on regenerated cellulose from wood holds great potential, but in order to produce fibers, the components need to be dissolved in suitable solvents. Furthermore, the dissolution process…
Novel S-doped ordered mesoporous carbon nanospheres toward advanced lithium metal anodes

Zhang, Fei; Liu, Xiaoyan; Yang, Menghua; Cao, Xiaoqing; Huang, Xingyu; Tian, Yue; Zhang, Fang; Li, Hexing

ApplicationCharacterizationCustomer publicationsMaterialPhase analysisPorous materialRenewable energySAXSTechnique

Novel S-doped ordered mesoporous carbon nanospheres toward advanced lithium metal anodes

Zhang, Fei; Liu, Xiaoyan; Yang, Menghua; Cao, Xiaoqing; Huang, Xingyu; Tian, Yue; Zhang, Fang; Li, Hexing

Lithium metal anode has been considered as an ideal anode for the next generation lithium batteries owing to its high energy density. However, its practical application is still limited by the low Coulombic efficiency and poor safety performance due to the lithium dendrites caused by uncontrollable lithium deposition and unstable…
Identifying the Superstability Landscapes of Clay–Carbon Nanosheet Suspensions

Kumar, Sanjay; Harikrishnan, G.

ApplicationCharacterizationCompositesCustomer publicationsFractal dimensionMaterialOtherSAXSTechnique

Identifying the Superstability Landscapes of Clay–Carbon Nanosheet Suspensions

Kumar, Sanjay; Harikrishnan, G.

Using a combination of several experiments, we identify the landscapes of the widely reported superstability of suspensions formed by codispersion of nanosheets of clay and carbon. Primarily, two distinct, abrupt transitions within this superstability are observed. This observation made on a series of model laponite–graphene oxide superstable two-dimensional sheet suspensions…
Facile treatment to fine-tune cellulose crystals in cellulose-silk biocomposites through hydrogen peroxide

Love, Stacy A.; Popov, Elizabeth; Rybacki, Karleena; Hu, Xiao; Salas-de la Cruz, David

(Natural) polymersApplicationCharacterizationCustomer publicationsMaterialOtherPhase analysisPolymer researchTechniqueWAXS

Facile treatment to fine-tune cellulose crystals in cellulose-silk biocomposites through hydrogen peroxide

Love, Stacy A.; Popov, Elizabeth; Rybacki, Karleena; Hu, Xiao; Salas-de la Cruz, David

The modulation of structural fibrous protein and polysaccharide biopolymers for the design of biomaterials is still relatively challenging due to the non-trivial nature of the transformation from a biopolymer's native state to a more usable form. To gain insight into the nature of the molecular interaction between silk and cellulose…
Synthesis and characterization of thermoresponsive ZIF-8@PNIPAm-co-MAA microgel composites with enhanced performance as an adsorption/release platform

Allegretto, Juan A.; Giussi, Juan M.; Moya, Sergio E.; Azzaroni, Omar; Rafti, Matias

ApplicationCharacterizationCustomer publicationsInorganic materialInorganic materialsMaterialPhase analysisPorous materialTechniqueWAXS

Synthesis and characterization of thermoresponsive ZIF-8@PNIPAm-co-MAA microgel composites with enhanced performance as an adsorption/release platform

Allegretto, Juan A.; Giussi, Juan M.; Moya, Sergio E.; Azzaroni, Omar; Rafti, Matias

Composite materials featuring a synergic combination of interesting properties such as stimuli responsiveness and tailored porosity are highly appealing due to their multiple possible applications. We hereby present an example which brings together such features by using poly(N-isopropyl-acrylamide)-derived thermo-responsive microgels and Zn-based Metal Organic Framework (MOF) ZIF-8, capable of