Oxygen vacancy excites Co3O4 nanocrystals embedded into carbon nitride for accelerated hydrogen generation

Non‐Noble Metal‐Based Catalysts Applied to Hydrogen Evolution from Hydrolysis of Boron Hydrides

“…First, DFT calculations have to be especially prominent and utilized to thoroughly comprehend the reaction mechanism for the hydrolysis of boron hydrides catalyzed by the non-noble metal-based catalysts. It was reported recently by Hou and Guan et al [82,168] that DFT calculations could supply some more meaningful information, including how the electronic structures affect the hydroxyl activation of the NH 3 BH 3 bonds, why doping with metalloids can enhance the catalytic activity, why the introduction of V O s can promote the adsorption and dissociation of NH 3 BH 3 and H 2 O molecules on the catalyst surface, and how the interactions take place on the surface between the metalbased catalysts and the supports. These problems are rarely solved unless we take advantage of theoretical calculations.…”

“…Co-CN-O-100 [168] Deposition To explore the catalytic mechanism, isotopic mass spectrometry combined with D 2 O was first utilized to analyze the gaseous products from the hydrolysis of NH 3 BH 3 solution catalyzed by Cu 0.8 Ni 0.1 Co 0.1 @MIL-101, as shown in Figure 8j. Note that there was only HD released during the hydrolytic reaction between NH 3 BH 3 and D 2 O, whereas the H and D fragments originated from NH 3 BH 3 and D 2 O, respectively.…”

“…[167] Hence, V O chemistry has led to great contention in this energyrelated catalysis field. Guan et al [168] successfully synthesized Co 3 O 4 nanocrystals with abundant V O , which were uniformly distributed on graphitic carbon nitride (g-C 3 N 4 ) supports. The preparation procedure is shown in Figure 18a.…”

“…l) Simulated pathways for hydrolytic dehydrogenation of NH 3 BH 3 . Reproduced with permission [168]. Copyright 2020, Elsevier.…”

Defect‐Rich Co−CoOx‐Graphene Nanocatalysts for Efficient Hydrogen Production from Ammonia Borane

“…Observation shows that the diffraction peak can be seen within the diffraction angle of 10-40°and looks narrow and sharp. [21] It was confirmed that CoMOF crystals with high crystallinity were successfully prepared. As shown in Figure 4(c), it shows the catalyst after calcination under different Full Paper temperature conditions.…”