Cryogels with Noble Metal Nanoparticles as Catalyst for “Green” Decomposition of Chlorophenols

Pollution of the aquatic environment by halogen derivatives widely used as antiseptic compounds, well chemicals for various industrial purposes, is significant. Existing systems bioremediation poorly solve problem eliminating pollution. This paper discusses preparation novel macroporous chitosan-based cryogels with in situ-immobilized Pd or Pt nanoparticles a catalyst dichlorination reactions. The formation mechanism metal coordinated chitosan gels using Medusa software modelling and rheology (G’ G’’) discussed. Metal were subsequently converted into covalently cross-linked redox potentials difference reaction mixture. Noble average size, 2.4 nm, evenly distributed cryogel structure. effectiveness these decomposition chloro-compounds o-chlorophenol, p-chlorophenol 2,4-dichlorophenol was tested. catalytic hydrogenation carried out “green reducing agent” formic acid. Increasing excess acid heating increases degree conversion up to 80–90%. CHI-GA-PdNPs at pH 6 showed better efficiency process compared CHI-GA-PtNPs cryogel; however, no significant 3 observed. termination batch mode have been studied. Several control tests elucidate poisoning. presented system may be interest studying reactions flow through mode, including obtaining valuable chemicals.