Journal
APPLIED SURFACE SCIENCE
Volume 440, Issue -, Pages 448-457Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2017.12.210
Keywords
Porous carbon nitride; Annealing; Dealloying; Cathodic arc; Nickel
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Funding
- National Natural Science Foundation of China [51171028]
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The preparation of mesoporous carbon nitride (p-CN) structure by the selective dealloying process of Ni/a-CN nanocomposite films is investigated. The composition and structure of the Ni/a-CN nanocomposite films and porous carbon nitride (p-CN) films are determined by scan electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy. Phase separated structure including nickel carbide phase and the surrounding amorphous carbon nitride (a-CN) matrix are detected for the as-deposited films. Though the bulk diffusion is introduced in the film during the annealing process, the grain sizes for the post-annealed films are around 10 nm and change little comparing with the ones of the as-deposited films, which is associated with the thermostability of the CN surrounding in the film. The p-CN skeleton with its pore size around 12.5 nm is formed by etching the post-annealed films, indicative of the stability of the phase separated structure during the annealing process. (C) 2018 Elsevier B.V. All rights reserved.
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