Non-Noble-Metal Nanoparticle Supported on Metal–Organic Framework as an Efficient and Durable Catalyst for Promoting H₂ Production from Ammonia Borane under Visible Light Irradiation

Abstract

In this work, we propose a straightforward method to enhance the catalytic activity of AB dehydrogenation by using non-noble-metal nanoparticle supported on chromium-based metal-organic framework (MIL-101). It was demonstrated to be effective for hydrogen generation from ammonia borane under assistance of visible light irradiation as a noble-metal-free catalyst. The catalytic activity of metal nanoparticles supported on MIL-101 under visible light irradiation is remarkably higher than that without light irradiation. The TOFs of Cu/MIL-101, Co/MIL-101, and Ni/MIL-101 are 1693, 1571, and 3238 h(-1), respectively. The enhanced activity of catalysts can be primarily attributed to the cooperative promoting effects from both non-noble-metal nanoparticles and photoactive metal-organic framework in activating the ammonia borane molecule and strong ability in the photocatalytic production of hydroxyl radicals, superoxide anions, and electron-rich non-noble-metal nanoparticle. This work sheds light on the exploration of active non-noble metals supported on photoactive porous materials for achieving high catalytic activity of various redox reactions under visible light irradiation.

Metal–Organic Framework Based Catalysts for Hydrogen Evolution

“…Besides other UiO-66/UiO-66-NH 2 [55,[145][146][147][148][149][150] and MIL-101/ MIL-101-NH 2 [151,152] associated work, the photocatalytic performances of MOF-supported catalysts, including UiO-type MOFs, [153][154][155] MOF-5, [56] MIL-125-NH 2 , [156,157] MIL-53-NH 2 , [158] Zr-porphyrin-based MOF (ZrPF), [159] and NU-1000 [160] are also summarized in Table 3. Besides other UiO-66/UiO-66-NH 2 [55,[145][146][147][148][149][150] and MIL-101/ MIL-101-NH 2 [151,152] associated work, the photocatalytic performances of MOF-supported catalysts, including UiO-type MOFs, [153][154][155] MOF-5, [56] MIL-125-NH 2 , [156,157] MIL-53-NH 2 , [158] Zr-porphyrin-based MOF (ZrPF), [159] and NU-1000 [160] are also summarized in Table 3.…”

Metal–organic framework-based nanomaterials for adsorption and photocatalytic degradation of gaseous pollutants: recent progress and challenges

“…Metal-organic frameworks (MOF) are an attractive class of organic-inorganic porous materials, constructed from inorganic secondary building units (metal oxide clusters or metal ions) coordinating to organic moieties. [31][32][33] Such coordination polymers offer significant chemical and structural diversity, and have outperformed the traditional porous materials in adsorption of harmful gas/vapor owing to the ability to elaborately tailor the pore size and chemical property of MOFs at the molecular level. 34,35 According to the size and chemical features of the adsorbate, MOF with well-defined adsorption sites anchored on ligands as well as certain pore sizes can be designed and fabricated by altering the identity of either the connecting center or organic linker, holding great potential in gas/vapor adsorption applications.…”

Influence of the Water/Titanium Alkoxide Ratio on the Morphology and Catalytic Activity of Titania–Nickel Composite Particles for the Hydrolysis of Ammonia Borane

“…Currently, considerable efforts are being devoted to the search for suitable hydrogen storage materials including metal hydrides, sorbent materials, and chemical hydrides . Among them, ammonia borane (NH 3 BH 3 ) has attracted much attention as a hydrogen carrier for portable hydrogen storage applications, owing to its high gravimetric hydrogen density (19.6 wt %), high stability and solubility under ambient conditions, environmentally friendliness, and favorable kinetics for hydrogen release . In the presence of suitable catalysts, ammonia borane releases hydrogen via hydrolysis under ambient conditions.…”

“…[3] Amongt hem, ammonia borane (NH 3 BH 3 )h as attracted much attentiona sahydrogenc arrier for portable hydrogen storage applications, owing to its high gravimetric hydrogen density (19.6 wt %), high stability and solubility under ambient conditions, environmentally friendliness, and favorable kinetics for hydrogen release. [4][5][6] In the presence of suitable catalysts, ammonia borane releases hydrogen via hydrolysis under ambient conditions. Therefore, the development of catalysts able to boost the kinetics of hydrogen generation through ammonia borane hydrolysisi sh ighly relevant for both academia and industry.…”