Synthesis of 2D anatase TiO2 with highly reactive facets by fluorine-free topochemical conversion of 1T-TiS2 nanosheets

Autor:	Marco Zarattini, Chaochao Dun, Liam H. Isherwood, Alexandre Felten, Jonathan Filippi, Madeleine P. Gordon, Linfei Zhang, Omar Kassem, Xiuju Song, Wenjing Zhang, Robert Ionescu, Jarrid A. Wittkopf, Aliaksandr Baidak, Helen Holder, Carlo Santoro, Alessandro Lavacchi, Jeffrey J. Urban, Cinzia Casiraghi
Přispěvatelé:	Zarattini, M, Dun, C, Isherwood, L, Felten, A, Filippi, J, Gordon, M, Zhang, L, Kassem, O, Song, X, Zhang, W, Ionescu, R, Wittkopf, J, Baidak, A, Holder, H, Santoro, C, Lavacchi, A, Urban, J, Casiraghi, C
Jazyk:	angličtina
Rok vydání:	2022
Předmět:	nanosheets Anatase Renewable Energy Sustainability and the Environment titanium dioxide topochemical conversion 2D material General Materials Science Materials Engineering Interdisciplinary Engineering General Chemistry Hydrogen evolution reaction 2D Macromolecular and Materials Chemistry
Zdroj:	J. Mater. Chem. A 10 (2022): 13884–13894. doi:10.1039/d1ta06695a info:cnr-pdr/source/autori:Zarattini M.; Dun C.; Isherwood L.H.; Felten A.; Filippi J.; Gordon M.P.; Zhang L.; Kassem O.; Song X.; Zhang W.; Ionescu R.; Wittkopf J.A.; Baidak A.; Holder H.; Santoro C.; Lavacchi A.; Urban J.J.; Casiraghi C./titolo:Synthesis of 2D anatase TiO2 with highly reactive facets by fluorine-free topochemical conversion of 1T-TiS2 nanosheets/doi:10.1039%2Fd1ta06695a/rivista:J. Mater. Chem. A/anno:2022/pagina_da:13884/pagina_a:13894/intervallo_pagine:13884–13894/volume:10 Zarattini, M, Dun, C, Isherwood, L H, Felten, A, Filippi, J, Gordon, M P, Zhang, L, Kassem, O, Song, X, Zhang, W, Ionescu, R, Wittkopf, J A, Baidak, A, Holder, H, Santoro, C, Lavacchi, A, Urban, J J & Casiraghi, C 2022, ' Synthesis of 2D anatase TiO 2 with highly reactive facets by fluorine-free topochemical conversion of 1T-TiS 2 nanosheets ', Journal of Materials Chemistry A, vol. 10, no. 26, pp. 13884-13894 . https://doi.org/10.1039/d1ta06695a Journal of materials chemistry. A, vol 10, iss 26
DOI:	10.1039/d1ta06695a
Popis:	Two-dimensional (2D) anatase titanium dioxide (TiO2) is expected to exhibit different properties as compared to anatase nanocrystallites, due to its highly reactive exposed facets. However, access to 2D anatase TiO2 is limited by the non-layered nature of the bulk crystal, which does not allow use of top-down chemical exfoliation. Large efforts have been dedicated to the growth of 2D anatase TiO2 with high reactive facets by bottom-up approaches, which relies on the use of harmful chemical reagents. Here, we demonstrate a novel fluorine-free strategy based on topochemical conversion of 2D 1T-TiS2 for the production of single crystalline 2D anatase TiO2, exposing the {001} facet on the top and bottom and {100} at the sides of the nanosheet. The exposure of these faces, with no additional defects or doping, gives rise to a significant activity enhancement in the hydrogen evolution reaction, as compared to commercially available Degussa P25 TiO2 nanoparticles. Because of the strong potential of TiO2 in many energy-based applications, our topochemical approach offers a low cost, green and mass scalable route for production of highly crystalline anatase TiO2 with well controlled and highly reactive exposed facets.
Databáze:	OpenAIRE
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