ABSTRACT
We demonstrate amyloid fibril (AF) decomposition induced by NIR-active upconversion nanoparticles complexed with photosensitisers. The process is triggered by upconversion, which initiates a photochemical reaction cascade that culminates in the generation of the highly reactive singlet-oxygen product 1O2 close to the amyloid superstructures, resulting in AF decomposition.
Subject(s)
Amyloid/antagonists & inhibitors , Nanoparticles/chemistry , Photosensitizing Agents/pharmacology , Amyloid/metabolism , Humans , Infrared RaysSubject(s)
Butanes/chemistry , Cerium/chemistry , Green Chemistry Technology/methods , Oxides/chemistry , Rhenium/chemistry , Zirconium/chemistry , Carbon Dioxide/chemistry , Catalysis , Conservation of Energy Resources/methods , Hydrogen/chemistry , Models, Chemical , Oxidation-Reduction , TemperatureABSTRACT
Hydrogen storage into multi-walled carbon nanotubes obtained by the decomposition of hydrocarbons using Ni-Li/SiO2 was investigated. The optimized reaction conditions for the synthesis of carbon nanotubes were 873K and W/F=40 g-cat.h/mol, and carbon nanotubes obtained by C2H6 decomposition were found to exhibit fairly large H2 storage capacity of 1 wt% at room temperature. The storage capacity increased with decreasing temperature and a capacity of 5 wt% was achieved at 77K, with 66% of adsorbed hydrogen being desorbable. Hydrogen adsorption by pi orbital in C-C bond coordination is proposed, observing both weakened Raman adsorption C-C peaks and the thermal release of CH4 after H2 storage.
Subject(s)
Energy-Generating Resources , Hydrogen/chemistry , Nanotechnology , Adsorption , Carbon , Hydrogen/analysis , Lithium/chemistry , Nickel/chemistry , Silicon Dioxide/chemistryABSTRACT
In our previous study, we found that Ti(OH)(4) exhibited fluoride ion exchange properties. In order to improve the ion exchange capacity, mesoporous Ti oxohydroxide (TiOx(OH)y) had been prepared by using dodecylamine as template. Zirconia and silica had been introduced into the mesoporous Ti oxohydroxide to enhance the ion exchange capacity. The mesoporous structure and the morphology of the mesoporous materials obtained were confirmed using XRD and SEM, respectively. A fluoride ion exchange study was done on each sample. Results showed that mesoporous Ti oxohydroxide containing zirconia exhibited the highest fluoride ion exchange capacity, as it has the smallest particle size, with high uniformity among the mesoporous materials prepared.
