A Non-van der Waals Two-Dimensional Material from Natural Titanium Mineral Ore Ilmenite

Aravind Puthirath Balan, Sruthi Radhakrishnan, Ritesh Kumar, Ram Neupane, Shyam Kanta Sinha, Liangzi Deng, Carlos A. De Los Reyes, Amey Apte, B. Manmadha Rao, Maggie Paulose, Robert Vajtai, Ching Wu Chu, Gelu Costin, Angel A. Martí, Oomman K. Varghese, Abhishek K. Singh, Chandra Sekhar Tiwary, Maliemadom R. Anantharaman, Pulickel M. Ajayan

研究成果: Article同行評審

27 引文 斯高帕斯(Scopus)

摘要

Two-dimensional (2D) materials from naturally occurring minerals are promising and possess interesting physical properties. A new 2D material "Ilmenene" has been exfoliated from the naturally occurring titanate ore ilmenite (FeTiO3) by employing liquid phase exfoliation in a dimethylformamide solvent by ultrasonic bath sonication. Ilmenene displays a [001] orientation that is confirmed by transmission electron microscopy. Probable charge transfer excitation from Fe2+Ti4+ to Fe3+Ti3+ results in ferromagnetic ordering along with the antiferromagnetic phase accompanied by enhanced anisotropy due to surface spins. The 2D nature and band gap states help ilmenene form a heterojunction photocatalyst with titania nanotube arrays, capable of broad spectrum light harvesting and separating/transferring the photogenerated charges effectively for solar photoelectrochemical water splitting.

原文English
頁(從 - 到)5923-5931
頁數9
期刊Chemistry of Materials
30
發行號17
DOIs
出版狀態Published - 2018 九月 11

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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