Polyethyleneimine-Based Cryogels Enabling the Selective and Reversible Adsorption of Chlorine.

Herein hyperbranched polyethyleneimine (hPEI) cryogels are reported for the selective and reversible adsorption of elemental chlorine. The cryogels are prepared in an aqueous solution by crosslinking with glutaraldehyde at subzero temperatures. The final macroporous composites bearing ammonium chloride groups are obtained after freeze-drying.

Polyhydroxykanoate-Assisted Photocatalytic TiO Films for Hydrogen Production.

The photocatalytic production of hydrogen using biopolymer-immobilized titanium dioxide (TiO) is an innovative and sustainable approach to renewable energy generation. TiO, a well-known photocatalyst, benefits from immobilization on biopolymers due to its environmental friendliness, abundance, and biodegradability. In another way, to boost the efficiency of TiO, its surface properties can be modified by incorporating co-catalysts like platinum (Pt) to improve charge separation.

Influence of Chloride and Electrolyte Stability on Passivation Layer Evolution at the Negative Electrode of Mg Batteries Revealed by operando EQCM-D.

Rechargeable magnesium batteries are promising for future energy storage. However, among other challenges, their practical application is hindered by low coulombic efficiencies of magnesium plating and stripping. Fundamental processes such as the formation, structure, and stability of passivation layers and the influence of different electrolyte components on them are still not fully understood.

Dichlorine-pyridine -oxide halogen-bonded complexes.

A new Cl-Cl···O-N halogen-bonded paradigm has been demonstrated, using dichlorine as a halogen bond (XB) donor and -oxide as an XB acceptor. Their crystalline complexes were formed during the warm-up process from -196 °C to -80 °C for X-ray diffraction analysis. They exhibit high instability in the crystalline state, even at these low temperatures, leading to rapid decomposition and the formation of Cl⋯H-O-N hydrogen-bonded complexes.