Coordination polymer to atomically thin, holey, metal-oxide nanosheets for tuning band alignment
Mofarah, Sajjad S. (University of New South Wales. School of Materials Science & Engineering)
Adabifiroozjaei, Esmaeil (National Institute for Materials Science (Tsukuba, Japó). Research Center for Functional Materials)
Pardehkhorram, Raheleh (University of New South Wales. School of Chemistry)
Assadi, Hussein (University of New South Wales. School of Materials Science & Engineering)
Hinterstein, Manuel (Karlsruhe Institute of Technology)
Yao, Yin (University of New South Wales. Mark Wainwright Analytical Centre)
Liu, Xinhong (University of New South Wales. School of Materials Science & Engineering)
Ghasemian, Mohammad B. (University of New South Wales. School of Chemical Engineering)
Kalantar-Zadeh, Kourosh (University of New South Wales. School of Chemical Engineering)
Mehmood, Rashid (Macquarie University. Department of Physics and Astronomy)
Cazorla, Claudio (University of New South Wales. School of Materials Science & Engineering)
Shahmiri, Reza (University of New South Wales. School of Materials Science & Engineering)
Bahmanrokh, Ghazaleh (University of New South Wales. School of Materials Science & Engineering)
Bhattacharyya, Saroj (University of New South Wales. Mark Wainwright Analytical Centre)
Spadaro, Maria Chiara (Institut Català de Nanociència i Nanotecnologia)
Arbiol i Cobos, Jordi (Institut Català de Nanociència i Nanotecnologia)
Lim, Sean (University of New South Wales. Mark Wainwright Analytical Centre)
Xu, Yuwen (University of New South Wales. School of Materials Science & Engineering)
Arandiyan, Hamidreza (University of Sydney. Laboratory of Advanced Catalysis for Sustainability)
Scott, Jason (University of New South Wales. Particles and Catalysis Research Group)
Koshy, Pramod (University of New South Wales. School of Materials Science & Engineering)
Sorrell, Charles C. (University of New South Wales. School of Materials Science & Engineering)

Data:	2019
Resum:	Holey 2D metal oxides have shown great promise as functional materials for energy storage and catalysts. Despite impressive performance, their processing is challenged by the requirement of templates plus capping agents or high temperatures; these materials also exhibit excessive thicknesses and low yields. The present work reports a metal-based coordination polymer (MCP) strategy to synthesize polycrystalline, holey, metal oxide (MO) nanosheets with thicknesses as low as two-unit cells. The process involves rapid exfoliation of bulk-layered, MCPs (Ce-, Ti-, Zr-based) into atomically thin MCPs at room temperature, followed by transformation into holey 2D MOs upon the removal of organic linkers in aqueous solution. Further, this work represents an extra step for decorating the holey nanosheets using precursors of transition metals to engineer their band alignments, establishing a route to optimize their photocatalysis. The work introduces a simple, high-yield, room-temperature, and template-free approach to synthesize ultrathin holey nanosheets with high-level functionalities.
Ajuts:	European Commission 754510 Ministerio de Economía y Competitividad ENE2017-85087-C3 Ministerio de Economía y Competitividad SEV-2017-0706 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-327
Nota:	Altres ajuts: ICN2 is supported by the CERCA Programme/Generalitat de Catalunya.
Drets:	Tots els drets reservats.
Llengua:	Anglès
Document:	Article ; recerca ; Versió sotmesa a revisió
Matèria:	2D materials ; Band alignment ; Heterostructures ; Holey nanosheets ; Metal-based coordination polymers
Publicat a:	Advanced materials, Vol. 31, issue 52 (Dec. 2019) , art. 1905288, ISSN 1521-4095

DOI: 10.1002/adma.201905288

Preprint 16 p, 2.0 MB

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