fig5
Figure 5. XPS spectra of PBF@N@S: full survey (A), C 1s spectra (B), N 1s spectra (C), and S 2p spectra (D). PBF@N@S: N, S dual-doped porous biochar fibers; XPS: X-ray photoelectron spectroscopy.
Minerals and Mineral Materials
ISSN 2832-269X (Online)
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