Thermal decomposition of Prussian blue under inert atmosphere

Polybenzoxazine‐Derived N‐doped Carbon as Matrix for Powder‐Based Electrocatalysts

“…A second weight loss of 35 %, after reaching 350 °C, was related to the release of cyanide groups of the PBA as cyanogen. The observed behavior conforms well to the pyrolysis of PBAs as previously reported . A weight increase of 5 % further indicates the formation of metal oxides as supported by the previously mentioned XPS results.…”

“…Additional STEM EELS maps also show a partial segregation of Mn and Co, Mn‐rich oxides and Co/MnCoO core–shell particles (Figures S5, S10, and S11). Furthermore, XRD and XPS revealed the existence of metal carbide phases (Figures and ), which are in good agreement with the literature about pyrolysis of PBA in inert atmosphere at 600 °C . The C 1s spectrum (Figure c) was deconvoluted into five peaks with binding energies at 283.52, 284.22, 285.36, 288, and 291.57 eV corresponding to metallic carbides, sp 2 C−C, C−O−C/C−N, O=C−O, and a shake‐up feature, respectively .…”

Using Prussian blue analogue nanoparticles confined into ordered mesoporous silica monoliths as precursors of oxides

“…However, in the case of mixed oxide, the classical synthetic methods bring together several precursors of the oxide in solution, making difficult the control of the stoichiometry of the final product. Whereas PBAs have most often been used as precursors of alloys [16][17][18][19], some examples concerning the thermal treatment of PBAs to obtain mixed oxides are reported in the literature: FeCo [20], ZnFe [21], ZnCu [22] or TiFe [23]. Indeed, Prussian blue analogues (PBA) are good candidates for the elaboration of mixed oxides with controlled stoichiometry by thermal decomposition in oxidative atmosphere [22,[24][25][26].…”

Effect of structural defects on activated carbon catalysts in catalytic wet peroxide oxidation of m-cresol

“…Besides, 69.8% Fe (II) and 21.0% Fe 3 O 4 were detected after 1500 h reaction, indicating a notable increase of Fe (II) content in PAC. The Fe (II) doublets in spectra could not be directly assigned to any phase, which might be a result of the formation of iron carbide [38]. In contrast, no significant difference in the Fe (II) concentration was observed for CAC before and after reaction, remaining at about 45% within the error limit.…”

“…The occurence of the Fe (III) doublet should be attributed to Fe 3 O 4 species in this sample because of the superparamagnetism effects, size distribution of the catalyst [37]. The two Fe (II) signals resulted from their different existence form and coordination environment [38]. On the other hand, there is 45% Fe (II) species in the fresh CAC.…”