Fabrication of Polypyrrole/Chitosan Nanocomposite Aerogel Monolith for Removal of Cr(VI)

Optimization of Tungsten Disulfide/Polypyrrole Composite as Photocatalyst in Sunlight-Asissted Photodegradation of Methylene Blue in Aqueous Solution

“…Generally, in the WS 2 /PPy composite spectrum, most of peaks that presents in PPy and WS 2 were observed with a slight shift in the wavenumber. The peaks or band that presents as C=C stretching of Py ring had been observed at 1528.95 cm -1 in PPy and at 1539.03 cm -1 in composite [22][23]. Besides, the C-N stretching was observed at 1468.72 cm -1 in PPy and at 1460.79 cm -1 in the composite which is slightly red-shifted from the original position.…”

Chemistry of Chitosan Aerogels: Three‐Dimensional Pore Control for Tailored Applications

“…[216] Ag nanoparticles also act as antibacterial additives. [217] Chitosan-biopolymer composites are proposed for biomedical scaffolds,e ither as wet cryogels or as freeze-dried gels: [218] Gelatin-agarose,a lginate,c ollagen, caprolactone, carrageenan, chondroitin sulfate,h yaluronic acid, cellulose, cyclodextrin, polylactide and poly(lactic-co-glycolic acid), polyglutamic acid, pectin, silk fibroin, starch, and chitin are typical biopolymers for this purpose,s ometimes combined with HAp and TCP to modify mechanical properties.Scaffold functionalization with polymers and macromolecules is also am ajor topic, for example,w ith DNA, [219] peptides, [220] nucleoside diphosphates, [221] and enzymes [222] for delivery and sensing applications,w ith polypyrrole [223] and polyaniline [224] for electrical conductivity,a nd with polyacrylamides, [225] polyethylene glycol, [226] polyvinyl alcohol, [227] polymethyl methacrylate, [228] and polyethylenimine [229] for improving mechanical properties and other functions.Carbon-based materials,s uch as graphene oxide, [230] carbon nanotubes, [231] and carbon black, [232] are also suitable components for electrical conduction and sensing applications.…”

Chemie der Chitosan‐Aerogele: Lenkung der dreidimensionalen Poren für maßgeschneiderte Anwendungen

“…[217] Chitosan-Biopolymerkomposite wurde als biomedizinische Gerüste vorgeschlagen, entweder als feuchte Kryogele oder als gefriergetrocknete Gele: [218] Gelatin-Agarose,A lginat, Collagen, Caprolacton, Carrageen, Chondroitinsulfat, Hyaluronsäure,C ellulose,C yclodextrin, Polylactid und Poly(milchsäure-co-glycolsäure), Polyglutaminsäure,P ektin, Seidenfibroin, Stärke und Chitin sind typische Biopolymere zu diesem Zweck, manchmal kombiniert mit HAp und TCP zur Veränderung der mechanischen Eigenschaften. Ein zentrales Thema ist ferner die Funktionalisierung mit Polymeren und Makromolekülen, beispielsweise DNA, [219] Peptide, [220] Nucleosiddiphosphate [221] und Enzyme [222] fürT ransport-und Sensorikanwendungen, Polypyrrole [223] und Polyaniline [224] zur elektrischen Leitfähigkeit sowie Polyacrylamide, [225] Polyethylenglycol, [226] Polyvinylalkohol, [227] Polymethylmethacrylat [228] und Polyethylenimin [229] zur Verbesserung der mechanischen Eigenschaften und weiterer unterschiedlicher Funktionen. Kohlenstoffbasierte Materialien wie Graphenoxid, [230] Kohlenstoffnanorçhren [231] und Carbon Black [232] sind ebenfalls geeignete Komponenten füre lektrische Leitfähigkeitsund Sensorikanwendungen.…”