Coordination polymer to atomically thin, holey, metal-oxide nanosheets for tuning band alignment

Sajjad S. Mofarah, Esmaeil Adabifiroozjaei, Raheleh Pardehkhorram, M. Hussein N. Assadi, Manuel Hinterstein, Yin Yao, Xinhong Liu, Mohammad B. Ghasemian, Kourosh Kalantar-Zadeh, Rashid Mehmood, Claudio Cazorla, Reza Shahmiri, Ghazaleh Bahmanrokh, Saroj Bhattacharyya, Maria Chiara Spadaro, Jordi Arbiol, Sean Lim, Yuwen Xu, Hamidreza Arandiyan, Jason ScottPramod Koshy*, Charles C. Sorrell

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)


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.

Original languageEnglish
Article number1905288
Number of pages9
JournalAdvanced Materials
Issue number52
Publication statusPublished - 27 Dec 2019


  • 2D materials
  • band alignment
  • heterostructures
  • holey nanosheets
  • metal-based coordination polymers


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