Lmst

#adsorption

SciTech Chronicles. . . . . . . . .Mar 15th, 2025

#graphene #nanotubes #chirality #adsorption #wetlands #sequestration #subsidence #erosion #perchlorates, #iron #silica #gypsum #information #context #hippocampus #abstract #micro-lightning #ionize #droplet #polymerization

SciTech Chronicles. . . . . . . . .Feb 26th, 2025

https://bit.ly/stc022625

#breastfeeding #complementary #genetic #environmental #Tea #metals #Adsorption #cellulose #water-rich #iron #ferrihydrite #spectra #fusion #Stellaris #QI-HTS #AI #quantum #vortex #unification #Ambient-pressure

` This unique many-body effect of interfacial water was consistently observed for various TiO2 particles with different crystalline structures, including brookite, anatase, and a mixture of anatase and rutile. Our results demonstrated that depositing several water layers in a water vapor environment with RH ∼ 70% is optimal for photocatalytic hydrogen evolution rather than liquid-phase reaction conditions in aqueous solutions.`

https://pubs.acs.org/doi/10.1021/jacs.4c04271

#hydrogen #photocatalysis #adsorption

Engines of Our Ingenuity 2991: Writing in Colors

Episode: 2991 Tswett and the Development of Chromatography. Today, we write in colors.

📣Andreas Seidel-Morgenstern wurde für seine Beiträge zu #Adsorption, #Chromatographie, #Kristallisationsprozess|en und zur Trennung von #Enantiomer|engemischen als Mitglied in die National Academy of Engineering der USA berufen - herzlichen Glückwünsch!

https://www.mpi-magdeburg.mpg.de/pm-2023-seidel-morgenstern-national-academy-engineering?c=4374594

Portrait von Andreas Seidel-Morgenstern. © Stefan Deutsch / Max-Planck-Institut Magdeburg

📣Andreas Seidel-Morgenstern has been elected as a member of the National Academy of Engineering of the USA for his contributions to #adsorption, #chromatography, #crystallization processes, and the separation of #enantiomer mixtures - congratulations!

https://www.mpi-magdeburg.mpg.de/4385805/2023-02-21-andreas-seidel-morgenstern-national-academy-engineering?c=3011

Portrait of Andreas Seidel-Morgenstern. © Stefan Deutsch / Max Planck Institute Magdeburg

Happy to share our new publication from the #ClayHOC project: #Adsorption of the #hydrophobic organic pollutant #hexachlorobenzene to phyllosilicate #minerals in ESPR

https://doi.org/10.1007/s11356-022-24818-4

Results show relevant #adsorption of #HCB to natural #ClayMinerals. Cation-modification revealed dependence on type, radius, #hydration enthalpy of exchangeable #cations

Results support relevance of minerals for #EnvironmentalFate of #PersistentOrganicPollutants #POP in #soils #sediments

#SPME #DFT #HOC

Photography of the twelve natural clays used in the publication. The clays are in powder form on a ceramic plate and show different colours (e.g. white, grey, brown, ...). Photo: Leonard Böhm

$Figure 1 from the publication. Adsorption isotherms for the interaction of HCB with the cation-modified clay mineral montmorillonite STx-1b. Homoionic cation exchange was performed with a alkali metal cations, and b alkaline earth metal cations (clay mineral concentration: 10 g L−1; particle size fraction: < 2 µm, HCB concentration: 1–5 µg L−1). Note different scales of y-axes. All isotherms in Fig. 1b are in the range of adsorption to Na+-modified montmorillonite in Fig. 1a Left panel (Figure 1a) shows increasing adsorption with increasing radius of alkali metal cations used for cation-exchange (except for Li that is comparable with K). Right panel (Figure 1b) shows equal adsorption independant of radius of alkaline earth metal cations used for cation-exchange.$

Figure 2 from the publication
Adsorption of HCB in the presence of cation-exchanged montmorillonite (CMS, STx-1b). Exchange was performed with alkali and alkaline earth metals.
Left panel shows relation between log Kd and the period of table of elements: log Kd is increasing depending on increasing atomic number after alkali cation modification of clay, but not after alkaline earth cation modification of clay.
Right panel shows relation between log Kd and hydrated radius: Higher hydrated radius of alkaline earth cations compared to hydrated radius of alkali cations shows grouping without overlapping.

Referenced link: https://phys.org/news/2022-12-visualizing-cooperative-adsorption-string-like-molecule.html
Discuss on https://discu.eu/q/https://phys.org/news/2022-12-visualizing-cooperative-adsorption-string-like-molecule.html

Originally posted by Phys.org / @physorg_com@twitter.com: https://twitter.com/physorg_com/status/1600140512534593536#m

Directly visualizing the cooperative #adsorption of a string-like molecule onto a solid with double-stranded #DNA @ScienceAdvances @sciencemagazine https://www.nature.com/articles/ncomms1259 https://phys.org/news/2022-12-visualizing-cooperative-adsorption-string-like-molecule.html

@SuzieReichman

Great idea. I add #contaminants #EnvironmentalAnalysis #SPME #HydrophobicOrganicChemicals #PlanetaryBoundaries #NovelEntities #pollutants #adsorption #bioavailability #bioaccumulation #ClayMinerals #nanoparticles

My current work is on "#ClayMinerals as sorbents for #HydrophobicOrganicChemicals - #ClayHOC" at #JLUgiessen together with my colleagues Martin Gerzabek, Daniel Tunega, and Peter Grancic from #BOKU Vienna.

Funding by #DFG and #FWF is highly acknowledged.

#adsorption #spme #pollutants #MolecularSimulations

https://gepris.dfg.de/gepris/projekt/443637168?language=en

#Introductions

I am a soil and environmental scientist with an interdisciplinary focus on environmental pollutant fate.

Research focus: #adsorption processes, #bioavailability #bioaccumulation, and catalytic elimination processes of anthropogenic #contaminants.

Special interest in miniaturization of experimental approaches and analytical methods, especially solid-phase microextraction #SPME

#SoilScience #EnvironmentalScience #ClayMinerals #pollutants #catalysis #EnvironmentalAnalysis

#FLouisGroup meeting this afternoon.
#combustion #atmoschem #compchem #pesticides #selenium #biochar

#chemiverse #academics #chemtoots

Nice talks from
1) Nesrine, PhD student on #combustion #PAHs
2) Zainab, PhD student on #atmoschem 0D modelling
3) Hisham, PhD student on #Fenpyrazamine
4) Nissrin, post-doc on #atmoschem #chlorpyrifos
5) Luna, master student on #selenium
6) Rémi and Guillaume, master students on #biochar #adsorption

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