Nanoarchitectonics of ultrafine molybdenum carbide nanocrystals into three-dimensional nitrogen-doped carbon framework for capacitive deionization.

Furthermore, the inductively coupled plasma optical emission spectrometry (ICP-OES) determinations clearly illustrate that the contents of the Mo element exhibits an increasing trend from 38.2 wt% of NC/MoC-0.25 to 67.1 wt% of NC/MoC/Mo 2 C-1, with the improvements of the MoO 4 2− units in ZIF-8 RDs (Fig.

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The I D / I G ratio achieves a decreasing trend along with the increase in Mo y C proportions in NC/Mo y C- x , suggesting a decrease in lattice defects with the improved graphitization degree from NC/MoC-0.25 to NC/MoC/Mo 2 C-1, which might be beneficial for accelerating charge transfer and stabilizing the carbide nanocrystals. 26 Nitrogen adsorption–desorption isotherms in Fig. 2f further reveal the coexistence of micropores and mesopores in the three NC/Mo y C- x , with the sharp nitrogen gas adsorption at low relative pressure ( P/P 0 < 0.1) and the hysteresis loops at higher relative pressures (∼0.4 to 1.0).

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