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Title: Salt-Templated Synthesis of 2D Metallic MoN and Other Nitrides

Authors:
 [1]; ; ; ; ; ; ; ; ; ORCiD logo; ORCiD logo [1]; ORCiD logo
  1. Department of Materials Science and Engineering and A. J. Drexel Nanomaterials Institute, Drexel University, Philadelphia, Pennsylvania 19104, United States
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC) (United States). Fluid Interface Reactions, Structures and Transport Center (FIRST)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1388621
DOE Contract Number:
ERKCC61
Resource Type:
Journal Article
Resource Relation:
Journal Name: ACS Nano; Journal Volume: 11; Journal Issue: 2; Related Information: FIRST partners with Oak Ridge National Laboratory (lead); Argonne National Laboratory; Drexel University; Georgia State University; Northwestern University; Pennsylvania State University; Suffolk University; Vanderbilt University; University of Virginia
Country of Publication:
United States
Language:
English
Subject:
catalysis (heterogeneous), solar (fuels), energy storage (including batteries and capacitors), hydrogen and fuel cells, electrodes - solar, mechanical behavior, charge transport, materials and chemistry by design, synthesis (novel materials)

Citation Formats

Xiao, Xu, Yu, Huimin, Jin, Huanyu, Wu, Menghao, Fang, Yunsheng, Sun, Jiyu, Hu, Zhimi, Li, Tianqi, Wu, Jiabin, Huang, Liang, Gogotsi, Yury, and Zhou, Jun. Salt-Templated Synthesis of 2D Metallic MoN and Other Nitrides. United States: N. p., 2017. Web. doi:10.1021/acsnano.6b08534.
Xiao, Xu, Yu, Huimin, Jin, Huanyu, Wu, Menghao, Fang, Yunsheng, Sun, Jiyu, Hu, Zhimi, Li, Tianqi, Wu, Jiabin, Huang, Liang, Gogotsi, Yury, & Zhou, Jun. Salt-Templated Synthesis of 2D Metallic MoN and Other Nitrides. United States. doi:10.1021/acsnano.6b08534.
Xiao, Xu, Yu, Huimin, Jin, Huanyu, Wu, Menghao, Fang, Yunsheng, Sun, Jiyu, Hu, Zhimi, Li, Tianqi, Wu, Jiabin, Huang, Liang, Gogotsi, Yury, and Zhou, Jun. Mon . "Salt-Templated Synthesis of 2D Metallic MoN and Other Nitrides". United States. doi:10.1021/acsnano.6b08534.
@article{osti_1388621,
title = {Salt-Templated Synthesis of 2D Metallic MoN and Other Nitrides},
author = {Xiao, Xu and Yu, Huimin and Jin, Huanyu and Wu, Menghao and Fang, Yunsheng and Sun, Jiyu and Hu, Zhimi and Li, Tianqi and Wu, Jiabin and Huang, Liang and Gogotsi, Yury and Zhou, Jun},
abstractNote = {},
doi = {10.1021/acsnano.6b08534},
journal = {ACS Nano},
number = 2,
volume = 11,
place = {United States},
year = {Mon Feb 06 00:00:00 EST 2017},
month = {Mon Feb 06 00:00:00 EST 2017}
}
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  • We report compressibility measurements for three transition metal nitrides ({epsilon}-TaN, {delta}-MoN, Cr{sub 2}N) that have structures based on hexagonal arrangements of the metal atoms. The studies were performed using monochromatic synchrotron x-ray diffraction at high pressure in a diamond anvil cell. The three nitride compounds are well-known high hardness materials, and they are found to be highly incompressible. The bulk modulus values measured for {epsilon}-TaN, Cr{sub 2}N, and {delta}-MoN are K{sub 0}=288(6) GPa, 275(23) GPa, and 345(9) GPa, respectively. The data were analyzed using a linearized plot of reduced pressure (F) vs the Eulerian finite strain variable f within amore » third-order Birch-Murnaghan equation of state formulation. The K{sub 0}{sup '} values for {epsilon}-TaN and {delta}-MoN were 4.7(0.5) and 3.5(0.3), respectively, close to the value of K{sub 0}{sup '}=4 that is typically assumed in fitting compressibility data in equation of state studies using a Birch-Murnaghan equation. However, Cr{sub 2}N was determined to have a much smaller value, K{sub 0}{sup '}=2.0(2.0), indicating a significantly smaller degree of structural stiffening with increased pressure. We also present Raman data for {epsilon}-TaN and {delta}-MoN at high pressure in order to characterize the phonon behavior in these materials. All of the Raman active modes for {epsilon}-TaN were identified using polarized spectroscopy. Peaks at low frequency are due to Ta motions, whereas modes at higher wave number contain a large component of N motion. The high frequency modes associated with Ta-N stretching vibrations are more sensitive to compression than the metal displacements occurring at lower wave number. The mode assignments can be generally extended to {delta}-MoN, that has a much more complex Raman spectrum. The x-ray and Raman data for {epsilon}-TaN show evidence for structural disordering occurring above 20 GPa, whereas no such change is observed for {delta}-MoN.« less
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