Multifunctional Chitosan–Polyoxometalate-Based Hydrogel Beads for UV Light Detection, Inkless Erasable Printing, Heterogenous Catalysis, and Antibacterial Applications
Arjumund Shaheen,
Pawandeep Kour,
Umar Nabi Tak
et al.
Abstract:In the present study, we report the synthesis of two different Kegging-type polyoxometalates (POMs), ammonium heptamolybdate (AHM) and phosphotungstic acid (PWA), loaded hydrogel beads formed from chitosan (Chi), chitosan/methylcellulose (Chi/MC) and chitosan/ gelatin (Chi/Gel). The addition of negatively charged POMs results in cross-linking between positively charged chitosan chains through electrostatic attraction. Fourier transform infrared spectroscopy, scanning electron microscopy, and thermal gravimetri… Show more
A series of chiral supramolecular hydrogels, constructed by the selective coordination of transition metal ions to an Anderson-polyoxometalate that has grafted mannose groups, are made up of helical nanofibers with a staggered stacking structure.
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