Construction of Porous Organic/Inorganic Hybrid Polymers Based on Polyhedral Oligomeric Silsesquioxane for Energy Storage and Hydrogen Production from Water

Abstract

In this study, we used effective and one-pot Heck coupling reactions under moderate reaction conditions to construct two new hybrid porous polymers (named OVS-P-TPA and OVS-P-F HPPs) with high yield, based on silsesquioxane cage nanoparticles through the reaction of octavinylsilsesquioxane (OVS) with different brominated pyrene (P-Br4), triphenylamine (TPA-Br3), and fluorene (F-Br2) as co-monomer units. The successful syntheses of both OVS-HPPs were tested using various instruments, such as X-ray photoelectron (XPS), solid-state 13C NMR, and Fourier transform infrared spectroscopy (FTIR) analyses. All spectroscopic data confirmed the successful incorporation and linkage of P, TPA, and F units into the POSS cage in order to form porous OVS-HPP materials. In addition, the thermogravimetric analysis (TGA) and N2 adsorption analyses revealed the thermal stabilities of OVS-P-F HPP (Td10 = 444 °C; char yield: 79 wt%), with a significant specific surface area of 375 m2 g–1 and a large pore volume of 0.69 cm3 g–1. According to electrochemical three-electrode performance, the OVS-P-F HPP precursor displayed superior capacitances of 292 F g−1 with a capacity retention of 99.8% compared to OVS-P-TPA HPP material. Interestingly, the OVS-P-TPA HPP showed a promising HER value of 701.9 µmol g−1 h−1, which is more than 12 times higher than that of OVS-P-F HPP (56.6 µmol g−1 h−1), based on photocatalytic experimental results.

Solid state chemical transformation provides a fully benzoxazine-linked porous organic polymer displaying enhanced CO2 capture and supercapacitor performance

“…with the electrolyte. [59][60][61][62][63] The current densities increased upon increasing the scan rate without altering the morphologies of the CV curves, validating the high-rate capabilities, stabilities, and kinetic properties of the TPA-DHTP-BZ POP before and after ROP. Furthermore, we examined the charge/discharge trends and capacitances of these compounds at various current densities [Fig.…”

Design and Synthesis of Bisulfone-Linked Two-Dimensional Conjugated Microporous Polymers for CO2 Adsorption and Energy Storage

“…This energy source and storage support the advent of electronic products, and the energy relies primarily on the supply of the natural environment [ 1 , 2 , 3 , 4 , 5 , 6 , 7 ]. Renewable energy sources include solar and wind power, ocean energy, hydropower, and biomass; limited energy sources come from industrial fossil fuels such as coal, natural gas, and oil [ 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 ]. The pursuit of green environmental protection without affecting the life experience of most consumers, or how to ensure the supply and demand of energy while improving economic effects, is a heavy part of technology today.…”

Effect of POSS Size on the Porosity and Adsorption Performance of Hybrid Porous Polymers

“…Polyhedral oligomeric silsesquioxanes (POSS, (R-SiO 1.5 ) n , n = 6, 8, 10, 12, etc. ), are one class of nanosized hybrid nanoblocks of interest in many research areas, including self-organized system-related materials, − polymer nanocomposites, − and inorganic–organic hybrid functional coatings. − With the rigid three-dimensional (3D) configuration, high reactivity, and hybrid nature, , in particular, an intriguing feature of similarity to the secondary building units of zeolites, POSS have also been considered as ideal nanoblocks to develop advanced HPPs. ,− To date, many studies on the geometry effect of aromatic linking units, such as linear-, planar-, tetrahedral-, propeller-, and ladder-like units, ,,− have revealed that the topological combination of POSS with these linking units can tune the porosity and yield various POSS-based porous materials (PPMs) with high performance. However, most studies on PPMs focused on T 8 POSS, and studies on the geometry effect of larger POSS such as T 10 , T 12 , and other compounds are limited (Figure a).…”