Author, as appears in the article.: Zhang, Guanyun; Wang, Fei; Tubul, Tal; Baranov, Mark; Leffler, Nitai; Neyman, Alevtina; Poblet, Josep M; Weinstock, Ira A
Department: Química Física i Inorgànica
URV's Author/s: Poblet Rius, Josep Maria / Wang, Fei
Keywords: Photocatalysis Oxide nanoparticles Nickel oxide Molecular complex Hexaniobate anion Co2 reduction Co reduction 2 temperature rhodium photoreduction mechanism photocatalytic properties photocatalysis oxidation niobate nio nickel oxide molecular complex mno metal-oxide hexaniobate anion
Abstract: Although pure and functionalized solid-state polyniobates such as layered perovskites and niobate nanosheets are photocatalysts for renewable-energy processes, analogous reactions by molecular polyoxoniobate cluster-anions are nearly absent from the literature. We now report that under simulated solar light, hexaniobate cluster-anion encapsulated 30-NiII-ion "fragments" of surface-protonated cubic-phase-like NiO cores activate the hexaniobate ligands towards CO2 reduction by water. Photoexcitation of the NiO cores promotes charge-transfer reduction of NbV to NbIV, increasing electron density at bridging oxo atoms of Nb-m-O-Nb linkages that bind and convert CO2 to CO. Photogenerated NiO "holes" simultaneously oxidize water to dioxygen. The findings point to molecular complexation of suitable semiconductor "fragments" as a general method for utilizing electron-dense polyoxoniobate anions as nucleophilic photocatalysts for solar-light driven activation and reduction of small molecules.© 2022 Wiley-VCH GmbH.
Thematic Areas: Química Medicina ii Medicina i Materiais Interdisciplinar General medicine General chemistry Farmacia Engenharias ii Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Chemistry, multidisciplinary Chemistry (miscellaneous) Chemistry (all) Chemistry Catalysis Astronomia / física
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: fei.wang@urv.cat josepmaria.poblet@urv.cat
Author identifier: 0000-0001-5106-5793 0000-0002-4533-0623
Record's date: 2025-02-18
Paper version: info:eu-repo/semantics/publishedVersion
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Paper original source: Angewandte Chemie (International Ed. Print). 61 (49): e202213162-
APA: Zhang, Guanyun; Wang, Fei; Tubul, Tal; Baranov, Mark; Leffler, Nitai; Neyman, Alevtina; Poblet, Josep M; Weinstock, Ira A (2022). Complexed Semiconductor Cores Activate Hexaniobate Ligands as Nucleophilic Sites for Solar-Light Reduction of CO2 by Water. Angewandte Chemie (International Ed. Print), 61(49), e202213162-. DOI: 10.1002/anie.202213162
Entity: Universitat Rovira i Virgili
Journal publication year: 2022
Publication Type: Journal Publications
Repositori URV