•PEG-DIL had been successfully prepared and applied in the hydrosilylation.•PEG-DIL-Rh catalytic system exhibit both excellent catalytic activity and selectivity.•PEG-DIL-Rh catalytic system is stably and could be recycled.A series of polyethylene glycol-functionalized imidazolium ionic liquids has been prepared and characterized. These ionic liquids have been successfully applied in the hydrosilylation of alkenes catalyzed by rhodium complexes. The effects of the length of the polyether chain, the amount of ionic liquid, and the reaction temperature on the catalytic performance of hydrosilylation have been investigated. Furthermore, the catalytic system has been tested for the hydrosilylation of different alkenes with triethoxysilane. The new catalytic system exhibits both excellent catalytic activity and selectivity under low-temperature conditions. The catalyst system could be recycled five times with slightly deactivation.A series of polyethylene glycol-functionalized imidazolium ionic liquids has been prepared and characterized. These ionic liquids have been successfully applied in the hydrosilylation of alkenes catalyzed by rhodium complexes. The catalytic system exhibits both excellent catalytic activity and selectivity. The catalytic system could be recycled.

A catalyst containing functionalized polyethylene glycol with 4-aminobenzoic acid (PEG-AMB) stabilized platinum nanoparticles has been synthesized and characterized, and its application in the hydrosilylation of alkenes investigated. It is shown that the functionalized PEG-stabilized Pt nanoparticles form a very efficient catalyst for the hydrosilylation of alkenes. The Pt nanoparticles can be fully immobilized in the PEG-AMB and recycled at least nine times without any obvious loss of catalytic activity.Graphical abstractHighlights► PEG-AMB-Pt nanoparticles catalyst had been synthesized and characterized. ► The PEG-AMB-Pt was very efficient catalyst for hydrosilylation of alkenes. ► The Pt nanoparticles could be immobilized in PEG-AMB stably and recycled.

SnO2 nanoparticles (NPs)@carbon nanofibers as anode materials for lithium-ion battery are synthesized by a novel facile route using the commercial filter paper and tin dichloride dehydrate (SnCl2·2H2O). The weight ratio between carbon nanofibers and SnO2 NPs, which seriously affects the battery performance, has been demonstrated to be easily tuned by adjusting the sintering temperature. The electrochemical investigations show that the SnO2 NPs@carbon nanofibers with 9 wt% carbon have the best performance with the highest capacity of 383 mAh g−1 after 30 cycles at a current density of 100 mA g−1. The method introduced in this study provides an easy strategy for the controlled introduction of carbon to optimize the performance of lithium-ion battery using SnO2 NPs@carbon nanofibers as anode materials.Highlights► A simple process to fabricate SnO2 NPs@carbon nanofibers as anode materials. ► Controlled introduction of carbon to optimize the lithium-ion battery performance. ► This method is easy preparation, low cost, and non-toxic source materials.

A novel polymer has been synthesized using 2-vinylpyridine as a functional monomer and allyl polyethylene glycol as a cross-linking agent, and platinum has been immobilized on this synthesized polymer. The resulting immobilized catalyst showed superior catalytic performance for the hydrosilylation of 3,3,3-trifluoropropene with triethoxysilane as compared to homogenous platinum catalyst, polystyrene-immobilized platinum or other hydrosilylation catalysts. The conversion of silane is about 100% and the maximum yield of β-adduct is 92.3% with slightly α-adduct. Furthermore, the catalyst showed sufficient stability that it could be reused three times without noticeable inactivation.Graphical abstractThe novel polymer synthesized immobilized platinum and applied in the catalytic hydrosilylation of 3,3,3-trifluoropropene with triethoxysilane. The catalysts show the excellent activity and the high selectivity of β-adduct.Research highlights▶ Using allyl polyethylene glycol as a cross-linking agent for preparing polymer. ▶ Using 2-vinylpyridine as a functional monomer for preparing polymer. ▶ The catalysts have high catalytic activity and selectivity. ▶ The catalysts could be reused three times without noticeable inactivation.

The hydrosilylation of alkenes in a supercritical CO2 (scCO2)/ionic liquid (IL) system was investigated. Rh(PPh3)3Cl exhibited excellent catalytic activity and selectivity. KOtBu was used as an additive, and no hydrogenation by-product (alkane) was detected in the scCO2/IL system. During hydrosilylation in the scCO2/IL system, the reactants were possibly transferred into the IL phase by scCO2, in which the catalyst was dissolved. The products can be flushed with scCO2 after the reaction and the catalyst/IL system reused.