Sugar-based micro/mesoporous hypercross-linked polymers with in situ embedded silver nanoparticles for catalytic reduction

Abstract

Porous hypercross-linked polymers based on perbenzylated monosugars (SugPOP-1–3) have been synthesized by Friedel–Crafts reaction using formaldehyde dimethyl acetal as an external cross-linker. Three perbenzylated monosugars with similar chemical structure were used as monomers in order to tune the porosity. These obtained polymers exhibit microporous and mesoporous features. The highest Brunauer–Emmett–Teller specific surface area for the resulting polymers was found to be 1220 m2 g−1, and the related carbon dioxide storage capacity was found to be 14.4 wt % at 1.0 bar and 273 K. As the prepared porous polymer SugPOP-1 is based on hemiacetal glucose, Ag nanoparticles (AgNPs) can be successfully incorporated into the polymer by an in situ chemical reduction of freshly prepared Tollens’ reagent. The obtained AgNPs/SugPOP-1 composite demonstrates good catalytic activity in the reduction of 4-nitrophenol (4-NP) with an activity factor k a = 51.4 s−1 g−1, which is higher than some reported AgNP-containing composite materials.

Microporous Hyper-Crosslinked Polystyrenes and Nanocomposites with High Adsorption Properties: A Review

“…HCL microporous nanocomposites are nowadays a class of materials that are widely studied for applications in adsorption and catalysis [ 71 , 72 ].…”

Water Solubility and Surface Activity of Alkoxyethyl β-d-Maltosides

“…As a new type of nonionic surfactant, APGs are mainly produced by dehydration condensation of renewable raw starch or its hydrolyzed saccharide compound and natural fatty alcohol in an acidic environment. , AGs and APGs have many advantages over other surfactants, such as excellent surface activity, decontamination foam, low ecotoxicity, and good biodegradability . As a result of the above advantages, AGs and APGs are widely used in the fields of detergents, cosmetics, food industry, and other fields. , In addition to this, AGs are found to be applied in biomedicine and organic microporous materials, , and to modify protein molecules, and so on. , …”

Carbazole-functionalized hyper-cross-linked polymers for CO2 uptake based on Friedel–Crafts polymerization on 9-phenylcarbazole

“…Qiao synthesized five microporous materials using carbazole with different flexible chains, proving that the flexible chain length was an important factor for the porosity [26]. Different phenyl-based structures were also synthesized to explore the effect of the monomer structure on the porosity [27–32]. However, researchers seldom cared about the effect of reaction conditions on the porosity, which is of far-reaching significance in preparation of HCPs.…”