Palladium nanoparticles confined in uncoordinated amine groups of metal–organic frameworks as efficient hydrogen evolution electrocatalysts

Abstract

Hydrogen obtained through the electrolysis of water is a potential solution to the growing demand of human society for energy. In addition, water electrolys is generates less environmental pollution than...

Zirconium-based metal–organic frameworks and their roles in electrocatalysis

“…With Pt as the electrocatalyst, the Pt/C@PCN-222 and Pt/C@PCN-221 could achieve a current density of 10 mA cm −2 for the HER at overpotentials of 194 mV and 167 mV, respectively, with the use of 1 M PBS as the electrolyte. Other relevant examples published recently include the confinement of Pd NPs within UiO-66-NH 2 , achieving a current of 10 mA cm −2 for the HER at an overpotential of 34 mV, 82 and the confinement of Cu NPs within amine-functionalised NU-1000, which showed an overpotential of 158 mV to achieve 10 mA cm −2 for the HER; 83 aqueous electrolytes containing 0.5 M of H 2 SO 4 were used in both examples.…”

Unravelling co-catalyst integration methods in Ti-based metal–organic gels for photocatalytic H2 production

“…As previously reported, the metalation with platinum is commonly afforded through two strategies: (1) in situ metalation, where the Pt nanoparticle or an alternative source of photoreducible platinum compound is added into the HER media; and (2) ex situ metalation, where the catalyst is doped or modified during its preparation or through a post-synthetic reaction. 17,19,21,23,30 Despite the fact that many studies have employed either one strategy or another, there is a lack of comparative studies in the field. Therefore, this study evaluates the two approaches for incorporating the co-catalyst into the porous surface of the MOG in terms of material performance and characteristics.…”