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. 2018 May 4;57(19):5444-5448.
doi: 10.1002/anie.201802232. Epub 2018 Mar 26.

Selective Etching of Silicon from Ti3 SiC2 (MAX) To Obtain 2D Titanium Carbide (MXene)

Mohamed Alhabeb  1 , Kathleen Maleski  1 , Tyler S Mathis  1 , Asia Sarycheva  1 , Christine B Hatter  1 , Simge Uzun  1 , Ariana Levitt  1 , Yury Gogotsi  1
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Selective Etching of Silicon from Ti3 SiC2 (MAX) To Obtain 2D Titanium Carbide (MXene)

Mohamed Alhabeb et al. Angew Chem Int Ed Engl. .

Abstract

Until now, MXenes could only be produced from MAX phases containing aluminum, such as Ti3 AlC2 . Here, we report on the synthesis of Ti3 C2 (MXene) through selective etching of silicon from titanium silicon carbide-the most common MAX phase. Liters of colloidal solutions of delaminated Ti3 SiC2 -derived MXene (0.5-1.3 mg mL-1 ) were produced and processed into flexible and electrically conductive films, which show higher oxidation resistance than MXene synthesized from Ti3 AlC2 . This new synthesis method greatly widens the range of precursors for MXene synthesis.

Keywords: MXenes; delamination; energy-storage materials; silicon; two-dimensional materials.

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