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Silicon oxycarbide-antimony nanocomposites for high-performance Li-ion battery anodes
(2020)NanoscaleSilicon oxycarbide (SiOC) has recently regained attention in the field of Li-ion batteries, owing to its effectiveness as a host matrix for nanoscale anode materials alloying with Li. The SiOC matrix, itself providing a high Li-ion storage capacity of 600 mA h g−1, assists in buffering volumetric changes upon lithiation and largely suppresses the formation of an unstable solid-electrolyte interface. Herein, we present the synthesis of ...Journal Article -
Uptake, distribution and radio-enhancement effects of gold nanoparticles in tumor microtissues
(2020)Nanoscale AdvancesRadiotherapy is an integral and highly effective part of cancer therapy, applicable in over 50% of patients affected by cancer. Due to the low specificity of the X-ray irradiation, the maximal radiation dose is greatly limited in order to avoid damage to surrounding healthy tissue. The limitations in applicable dose oftentimes result in the survival of a subpopulation of radio-resistant cells that then cause cancer reoccurence. Approaches ...Journal Article -
In cell Gd3+-based site-directed spin labeling and EPR spectroscopy of eGFP
(2020)Physical Chemistry Chemical PhysicsLabel-based functional studies of biomolecules in their native environment require labeling reactions inside living cells. In cell spin labeling using alkyne–azide click chemistry with a Gd3+-DOTAM-azide complex is shown to provide high spin label stability and narrow EPR lines for EPR spectroscopic detection of a spin labeled protein in living cells at ambient temperatures.Journal Article -
Hydrogen production from natural gas and biomethane with carbon capture and storage – A techno-environmental analysis
(2020)Sustainable Energy & FuelsThis study presents an integrated techno-environmental assessment of hydrogen production from natural gas and biomethane, combined with CO2 capture and storage (CCS). We have included steam methane reforming (SMR) and autothermal reforming (ATR) for syngas production. CO2 is captured from the syngas with a novel vacuum pressure swing adsorption (VPSA) process, that combines hydrogen purification and CO2 separation in one cycle. As comparison, ...Journal Article -
CMM-based method for assessing the volume change of retrieved polyethylene cups in MoP total hip replacements
(2020)Biosurface and BiotribologyWear occurring at the bearing surface and the consequent generation of wear debris has been identified as the primary cause of aseptic loosening in metal-on-polyethylene (MoP) hip joint replacements. The accurate estimation of volume change in polyethylene cups due to creep and wear is, therefore, an important step for identifying the cause of failure and improving the longevity of MoP prosthesis. The purposes of this study were to present ...Journal Article -
Interactions of ferrous iron with clay mineral surfaces during sorption and subsequent oxidation
(2020)Environmental Science: Processes & ImpactsIn submerged soils and sediments, clay minerals are often exposed to anoxic waters containing ferrous iron (Fe2+). Here, we investigated the sorption of Fe2+ onto a synthetic montmorillonite (Syn-1) low in structural Fe (<0.05 mmol Fe per kg) under anoxic conditions and the effects of subsequent oxidation. Samples were prepared at two Fe-loadings (0.05 and 0.5 mol Fe added per kg clay) and equilibrated for 1 and 30 days under anoxic ...Journal Article -
Ring-fused cyclobutanes via cycloisomerization of alkylidenecyclopropane acylsilanes
(2020)Chemical ScienceA novel Lewis acid-catalyzed cycloisomerization of alkylidenecyclopropane acylsilanes is disclosed. The readily available starting materials participate in tandem Prins addition/ring expansion/1,2-silyl shift to grant access to bicyclo[4.2.0]octanes and bicyclo[3.2.0]heptanes, which are common motifs in terpenoid natural products. Notably, the transformation relies on the ability of acylsilanes to act sequentially as acceptors and donors ...Journal Article -
Structure of copper sites in zeolites examined by Fourier and wavelet transform analysis of EXAFS
(2020)Chemical ScienceCopper-exchanged zeolites are a class of redox-active materials that find application in the selective catalytic reduction of exhaust gases of diesel vehicles and, more recently, the selective oxidation of methane to methanol. However, the structure of the active copper-oxo species present in zeolites under oxidative environments is still a subject of debate. Herein, we make a comprehensive study of copper species in copper-exchanged ...Journal Article -
Role of life-cycle externalities in the valuation of protic ionic liquids-a case study in biomass pretreatment solvents
(2020)Green ChemistryIonic liquids have found their way into many applications where they show a high potential to replace traditional chemicals. But concerns over their ecological impacts (toxicity and biodegradability) and high cost have limited their use so far. The outcome of existing techno-economic and life-cycle assessments comparing ionic liquids with existing solvents has proven hard to interpret due to the many metrics used and trade-offs between ...Journal Article -
Diversity in Biology: definitions, quantification, and models
(2020)Physical BiologyDiversity indices are useful single-number metrics for characterizing a complex distribution of a set of attributes across a population of interest. The utility of these different metrics or sets of metrics depends on the context and application, and whether a predictive mechanistic model exists. In this topical review, we first summarize the relevant mathematical principles underlying heterogeneity in a large population, before outlining ...Journal Article