In situ construction of Co@nitrogen-doped carbon/Ni nanocomposite for broadband electromagnetic wave absorption

FeNiCrCoMn High-Entropy Alloy Nanoparticles Loaded on Carbon Nanotubes as Bifunctional Oxygen Catalysts for Rechargeable Zinc-Air Batteries

“…In addition, there is no significant variation between the XRD results of each catalyst Fe 59 The Co 2p peak spectrum (Figure 3e) indicates that Co exhibits two forms in Fe 12 Ni 23 Cr 10 Co 30 Mn 25 /CNT, the 0-valent (778.9 and 793.9 eV) metallic state and the +2 valent (781.9 and 797.6 eV) oxidation state. 57,58 The results of Mn 2p resolution indicate that Mn exhibits two morphologies in Fe 12 Ni 23 Cr 10 Co 30 Mn 25 / CNT, the 0-valent (636.5 and 647.7 eV) metallic state and the +2 valent (641.5 and 652.7 eV) oxidation state. 60 The XPS result of the catalyst Fe 12 Ni 23 Cr 10 Co 30 Mn 25 /CNT shows the presence of multiple oxidation states for each element.…”

“…Figure S11 indicates that all five metal elements added were detected on the surface of the catalyst Fe 12 Ni 23 Cr 10 Co 30 Mn 25 /CNT, which is consistent with the mapping results, while three non-metallic elements (C, N, and O) were also detected, which were derived from the acid-treated CNT. The Fe 2p peak diagram (Figure b) indicates that the Fe in Fe 12 Ni 23 Cr 10 Co 30 Mn 25 /CNT exhibits three states, the metal state at 0 valency (707.4 and 720.5 eV) and the oxidation states at +2 (710.4 and 723.5 eV) and +3 (712.1 and 725.2 eV) valencies, respectively. ,− The Ni 2p peak diagram (Figure c) indicates that the Ni in Fe 12 Ni 23 Cr 10 Co 30 Mn 25 /CNT exhibits two states, the 0-valent metallic state (852.9 and 870.2 eV) and the +2 valent oxidation state (855.7 and 873.0 eV), respectively. , Fitting of the Cr 2p profile (Figure d) revealed the presence of both the 0-valent (573.9 and 586.2 eV) metallic state and the +3 valent (578.8 and 588.1 eV) oxidation state of Cr in Fe 12 Ni 23 Cr 10 Co 30 Mn 25 /CNT . The Co 2p peak spectrum (Figure e) indicates that Co exhibits two forms in Fe 12 Ni 23 Cr 10 Co 30 Mn 25 /CNT, the 0-valent (778.9 and 793.9 eV) metallic state and the +2 valent (781.9 and 797.6 eV) oxidation state. , The results of Mn 2p resolution indicate that Mn exhibits two morphologies in Fe 12 Ni 23 Cr 10 Co 30 Mn 25 /CNT, the 0-valent (636.5 and 647.7 eV) metallic state and the +2 valent (641.5 and 652.7 eV) oxidation state .…”

4D printing MOF-derived/multi-fluorination nanocomposites for ultra-efficient electromagnetic wave absorption and robust environment adaptivity

“…Moreover, the attenuation constant ( α ) and impedance matching ( Z ) were introduced to further analyze the attenuation mechanisms, and the formula given below was followed. 43 …”

Prepatterned Cyanuric Acid Template for Reaching the Theoretical Upper Limit of Nitrogen-Doped Graphene for Nonradical Oxidation

“…The obtained TUNPG was confirmed to be a carbonaceous material, as its diffraction peaks located at 26.22°matched well with the graphite (Figure 3a). 33 Moreover, as a powerful method to characterize carbonaceous materials, TUNPG exhibited two characteristic peaks at 1342 and 1561 cm −1 in the Raman spectrum (Figure 3b). 34 Additionally, in the Raman spectra of TUNPG, a broad peak at 2782 cm −1 attributed to the 2D structure was observed, indicating that TUNPG might be composed of single or few-layered graphene.…”