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MoS 2 Synthesis

MoS 2 Synthesis. Traditional Synthesis Mo + 2 S  MoS 2 Rapid Solid-State Synthesis MoCl 5 + 5/2 Na 2 S  MoS 2 + 5 NaCl +1/2 S. ≥ 1000°C days. Room temperature seconds. Nature , 349 , 510 (1991). start 0.00 s. 0.04 s. 0.08 s. 0.12 s. 0.33 s. 0.88 s. 1.50 s.

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MoS 2 Synthesis

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  1. MoS2 Synthesis Traditional Synthesis Mo + 2 S  MoS2 Rapid Solid-State Synthesis MoCl5 + 5/2 Na2S  MoS2 + 5 NaCl +1/2 S ≥ 1000°C days Room temperature seconds Nature, 349, 510 (1991).

  2. start 0.00 s

  3. 0.04 s

  4. 0.08 s

  5. 0.12 s

  6. 0.33 s

  7. 0.88 s

  8. 1.50 s

  9. 3.44 s

  10. And now, in real time…

  11. X-ray Diffraction Patterns of MoS2 MoS2 from precursors ∆Hrxn = – 213 kcal/mol Tmax = 1413 ºC MoS2 from elements

  12. Solid Solutions Mixed Anion: MoCl5 + Na2(S, Se)  Mo(S, Se)2 + NaCl Inorg. Chem., 31, 2127 (1992). Mixed Metal: MoCl5•WCl6 + Na2S  (Mo, W)S2 + NaCl Inorg. Chem., 32, 6084 (1993).

  13. Refractory Nitrides AlN*, BN, HfN, NbN, TaN, TiN, ZrN** ZrCl4 + 4/3 Li3N  ZrN + 4 LiCl + 1/6 N2 ∆Hrxn = –190.6 kcal/mol Tmax = 1382 ºC * Inorg. Chem., 42, 2719 (2003). ** Inorg. Chem., 33, 5693 (1994).

  14. ZrN in-situ Temperature Measurement  1370 °C, 0.65 sec Chem. Mater., 8, 333 (1996).

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