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• W4306319386 endingPage "118910" @default.
• W4306319386 startingPage "118910" @default.
• W4306319386 abstract "Visible light-driven reduction of CO 2 to methanol is an important issue. Previously, semiconductor based photocatalysts have been widely researched. In recent years, metal-organic frameworks (MOFs) also attracted much attention of researchers on photocatalysis . However, charge mobility on the MOFs is inefficient, which results in easy recombination of the excited electrons. Therefore, the turnover frequency (TOF) over the MOFs is extremely low in the photoreduction of CO 2 . Enhancing adsorption of visible light and the carrier separation would be effective ways to promote the catalytic performance. Herein, we report a glass immobilized amorphous organotitanium polymer. The band gap for ligand-to-metal charge transfer was 2.21 eV. Moreover, the polymer may contain a continuous Ti-O-Ti-O chain, which facilitates charge migration and prolongs the lifetime of the excited electrons. Photoreduction of CO 2 was carried out in 0.2 M ethylenediamine (EDA) aqueous solution. The TOF was enhanced by over 500 times as compared to that over the NH 2 -MIL-125(Ti) powder. In addition, the immobilized polymer exhibited better solvent stability and thermal stability than the NH 2 -MIL-125(Ti). Annealing at 300 ℃ for 15 min under N 2 atmosphere, the band gap of the immobilized polymer basically remained changed, but the MOF powder failed. An amorphous organotitanium polymer was enbeded in the chemically etched glass as a recovable photocatalyst, enhancing turnover frequency and stabilities in photocatalytic reduction of CO 2 . • Amorphous organotitanium polymer was immobilized in chemically etched glass. • A continuous metal oxygen chain facilitates charge migration and prolongs the lifetime of the excited electrons. • The immobilized organotitanium polymer exhibited a significantly enhanced TOF as compared to the NH 2 -MIL-125(Ti) powder. • The immobilized organotitanium polymer has an increased solvent stability and thermal stability." @default.
• W4306319386 created "2022-10-16" @default.
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• W4306319386 date "2022-10-01" @default.
• W4306319386 modified "2023-09-27" @default.
• W4306319386 title "Fabrication of glass immobilized amorphous organotitanium polymer for enhancing catalytic turnover frequency and stabilities in photocatalytic reduction of CO2" @default.
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• W4306319386 doi "https://doi.org/10.1016/j.apcata.2022.118910" @default.
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