Oxygen vacancies and morphology engineered Co3O4 anchored Ru nanoparticles as efficient catalysts for ammonia borane hydrolysis

Exposed Facet Tailoring of Ni/Cu Catalysts for Boosting Dehydrogenation of Ammonia Borane

“…It is reasonable to assume that oxygen defect sites may occur due to surface reconstruction, where molecules including H 2 O and CO 2 can be readily absorbed to form metal hydroxide and metal carbon dioxide. In addition, more defective sites generated on the surface of the catalysts can potentially enhance the adsorption of AB and contribute to the improved catalytic activity. ,, Area calculation by integration shows that the ratios of metal–OH/metal–CO 3 /defective oxide for Ni/Cu-c, Ni/Cu-t, and Ni/Cu-o are 0.85, 0.82, and 0.76, respectively. That is to say, from precursor of Cu 2 O-c to Cu 2 O-o, as the ratio of Cu 2 O­(100) facet decreases, there appears to be a trend toward more defective sites on the generated Cu surface, which is inconsistent with the trend in the proportion of Metal–OH/Metal-CO 3 /defective oxide on the surface of original Cu 2 O-x and directly reduced Cu-x (x = c, t, o) using NaBH 4 as shown in Table S1.…”

Engineering a hollow bowl-like porous carbon-confined Ru–MgO hetero-structured nanopair as a high-performance catalyst for ammonia borane hydrolysis

“…Zhang et al have reported a defective structured and morphologically engineered Co 3 O 4 -supported Ru catalyst for high-performance AB hydrolysis. 23 Its enhanced activity can be attributed to the strengthened metal-support interaction. Shen et al have used TiO 2 with rich oxygen vacancies (O v ) as a support to fabricate small Ru nanoparticles, affording a high turnover frequency (TOF) value of 1350 min À1 under alkaline conditions.…”

Architecture engineering toward highly active Rh integrated porous carbon with diverse flexible channels for hydrogen evolution

“…As a typical chemical hydride, ammonia borane (AB) has gained popularity owing to its ultrahigh hydrogen content and high stability/solubility in aqueous solution. [5][6][7][8] Hydrolytic dehydrogenation is an appealing strategy to realize hydrogen production from AB under mild conditions. 9,10 The high purity hydrogen released by AB hydrolysis is directly used in highly efficient aviation and marine proton exchange membrane fuel cells.…”