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- W4322494906 abstract "In the present work, vanadium carbide (V2CTx) MXene was synthesized successfully and then treated with an ammonia solution (NH4OH) under different pressures using a hydrothermal process. The sample morphology reveals that the V2CTx MXene gradually changed from uneven multilayered micrometre-size sheets to uniform few-layered nanometer-size sheets as the pressure increased. The optical emission spectra show broad emission and a blue shift due to nitrogen-related defects and quantum confinement. X-ray photoelectron spectroscopy shows the presence of nitrogen in all of the samples. The ultraviolet photoelectron spectroscopy study shows a modified density of states near the Fermi level and a maximum of ∼0.6 eV valence band edge shift towards a higher binding energy side after post-treatment with ammonia. More interestingly, the E1g Raman band becomes degenerate and the E1g band upshifts (∼15 cm–1) with increasing pressure treatment. The Raman results suggest that the induced lattice strain due to post-ammonia treatment plays a crucial role in deciding the optical and electronic properties." @default.
- W4322494906 created "2023-02-28" @default.
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- W4322494906 date "2023-02-27" @default.
- W4322494906 modified "2023-10-18" @default.
- W4322494906 title "Post-Ammonia-Treated V<sub>2</sub>CT<i><sub>x</sub></i> MXene at Different Pressures: Effects on Morphology, Electronic, and Optical Properties" @default.
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- W4322494906 doi "https://doi.org/10.1021/acs.jpcc.2c08083" @default.
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