Publications by authors named "P Rupper"
A novel single-atom Ni(II) catalyst (Ni-OH) is covalently immobilized onto the nano-channels of mesoporous Santa Barbara Amorphous (SBA)-15 particles and isotropic Anodized Aluminum Oxide (AAO) membrane for confined-space ethylene extrusion polymerization. The presence of surface-tethered Ni complexes (Ni@SBA-15 and Ni@AAO) is confirmed by the inductively coupled plasma-optical emission spectrometry (ICP-OES) and X-ray photoelectron spectroscopy (XPS). In the catalytic spinning process, the produced PE materials exhibit very homogeneous fibrous morphology at nanoscale (diameter: ~50 nm).
View Article and Find Full Text PDFIn recent years, water pollution has developed into a severe environmental and public health problem due to rapid urbanization and industrialization, especially in some developing countries. Finding solutions to tackle water pollution is urgently required and is of global importance. Currently, a range of water treatment methods are available; however, a water remediation process that is simple, inexpensive, eco-friendly, and effective for the removal of pollutants down to ppm/ppb concentrations has long been sought after.
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- Montmorillonite (MMT) particles, due to their negative surface charge and ability to swell, are effective in creating hybrid materials for applications like metal ion adsorption, drug delivery, and antibacterial uses.
- The combination of MMT with other materials enhances the photophysical properties, making these hybrids promising for developing optical sensors that are sensitive and selective.
- The study demonstrated that using silver-modified MMT significantly boosts fluorescence detection, allowing for the detection of biomolecules like fluorescein isothiocyanate at highly sensitive levels, paving the way for efficient, low-cost detection methods.
Article Synopsis
- The text discusses a method for applying solid films on low-vapor pressure liquids to enhance surface functionality using liquid polyethylene glycol (PEG).
- It highlights the use of low-pressure plasma treatment to create solid-liquid gradients that facilitate the binding of plasma polymer films to polydimethylsiloxane (PDMS) backing.
- The study employs various analytical techniques to demonstrate how the thickness of the PEG substrate impacts film growth and the resulting surfaces exhibit strong hydrophilic properties suitable for applications like non-fouling or low-friction surfaces.
Due to their mechanical strength, thermal stability and electrical conductivity, graphene-related materials (GRMs) have been extensively explored for various applications. Moreover, GRMs have been studied and applied as fillers in polymer composite manufacturing to enhance the polymer performance. With the foreseen growth in GRM production, occupational and consumer exposure is inevitable, thus raising concerns for potential health risks.
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