Membrane-based polybenzimidazole (mPBI) emerges as an exciting electrolyte membrane for alkaline fuel cells and water electrolyzers due to its useful ion conductivity range after being doped with aqueous KOH. However, the polymer degradation at highly concentrations limits practical use. Herein, density functional theory (DFT) calculations are used study mechanism of mPBI molecule in solution. ...

Cheap, efficient water electrolysis with non-platinum catalysts is the key to a fossil fuel-free future. Highly conductive, mechanically strong separators are essential components.

Aquivion membrane displays improved properties as compared to Nafion membrane, partly due shorter side chains. However, some improvements are still necessary for proton exchange fuel cell operate at low relative humidity. To overcome this drawback, the addition of clay nanoparticle into matrix can be considered. In study, different composite membranes have been prepared mixing short-side-chain ...

We herein describe a method of depositing hemoglobin (Hb) and sulfonated polyaniline (SPAN) on GC electrodes that facilitate interfacial protein electron transfer. Well-defined, reproducible, chemically reversible peaks of Hb and SPAN can be obtained in our experiments. We also observed enhanced peroxidase activity of Hb in SPAN films. These results clearly showed that SPAN worked as molecular ...

In this protocol, we describe an approach in which two-dimensional electrophoresis (2DE)-separated proteins are guanidinated in-gel prior to enzymatic cleavage. In contrast to previously described techniques, this procedure allows the extracted tryptic peptides to be N-terminally sulfonated without any further sample purification. The protocol was applied on a proteomic study of 2DE-separated p...

A highly sensitive and selective Hg probe 4 based on rhodamine-b was developed and characterized. In consideration of environmental and biological application, we connected a water soluble receptor group (sulfonated β-naphtol) and rhodamine-b together through hydrazine hydrate in high yield. The result turns out that this compound not only exhibits excellent sensitivity and selectivity toward H...

The formation of nonluminescent aggregates of aluminium sulfonated phthalocyanine in complexes with CdSe/ZnS quantum dots causes a decrease of the intracomplex energy transfer efficiency with increasing phthalocyanine concentration. This was confirmed by steady-state absorption and photoluminescent spectroscopy. A corresponding physical model was developed that describes well the experimental d...

Re-polymerization reactions are a commonly reported issue on the way to higher recovery of monomers from lignin. The reactivity obtained lignin depolymerization and their contribution re-polymerization in supercritical water (SCW) was investigated. Sulfonated Kraft (SKL) used along with four monomers: vanillin, vanillic acid, vanillyl alcohol acetovanillone. Indulin also employed as reference u...

In this study, ion exchange nanocomposite membranes was prepared by addition of Mg(OH)2 nanoparticles to a blend containing sulfonated polyphenylene oxide and sulfonated polyvinylchloride via a simple casting method. Magnesium hydroxide nanoparticles were synthesized via a facile sono-chemical reaction and were selected as filler additive in fabrication of ion exchange nanocomposite membranes. ...