Household Aluminum Products as Insoluble Precursors for Directed Growth of Metal–Organic Frameworks

Abstract

Converting unconventional precursors into advanced separation materials can reduce manufacturing complexity while affording economic and environmental benefits. Here we report the conversion of various aluminum-containing commercial products, such as recycled beverage cans and aluminum foil, to both supported and nonsupported metal−organic frameworks (MOFs). Supported MOF/aluminum composites grow from and on aluminum via hydrothermal treatment to create multiple supported MOF topologies. The same precursor is also employed to generate nonsupported MOFs using HCl (aq) as an etching agent. High yields (∼83%) of MIL-53(Al) are achieved using aluminum foil, with products possessing textural properties that are consistent with conventionally synthesized materials. This study provides a synthesis methodology for enhancing the economic viability of next-generation separation materials.

Hierarchical N-Doped CuO/Cu Composites Derived from Dual-Ligand Metal–Organic Frameworks as Cost-Effective Catalysts for Low-Temperature CO Oxidation

“…N-CuO/Cu composites possessed a competitively high TOF value of 1.17 × 10 −3 s −1 at 393 K, which was 1−2 orders of magnitude higher than CuO (6.99 × 10 −5 s −1 ) and superior to most reported MOF-based catalysts (Table S2). In sharp contrast, the lowest apparent activation energy (36 toward CO oxidation was observed for N-CuO/Cu (Figure 7e). A catalyst derived from CuBTC-MeIM(rt) was also fabricated for CO oxidation, and N-CuO T /Cu also exhibited high performance.…”

“…Moreover, the introduction of a second ligand into the original MOFs may cause severe collapse of the intrinsic morphology. Comparatively, the heterogeneous nucleation strategy with insoluble metal precursors such as metal oxides and metal hydroxides would provide a more flexible and cost-effective route for MOF production and offer an efficient route for direction- and shape-controlled synthesis. − Superior to traditional methods, development of a heterogeneous assembly strategy exhibits greater potential to fabricate multi-ligand MOFs for rapid transformation of derivatives with complex compositions and unique structures.…”

Upcycling hazardous metals and PET waste-derived metal–organic frameworks: a review on recent progresses and prospects

“…Aluminium-based MOF (MIL-53(Al)) produces high yields (83%) and is synthesized from Coca-Cola cans with a surface area of 800 m 2 g À1 , which is 30% less than the traditionally synthesized Al-based MOFs MIL-53(Al) (1140 m 2 g À1 ) because of impurities such as epoxy resin and plastic labeling. 50 The use of batteries has increased in the past few decades. Ultimately, their wastage has also increased globally.…”

“…The price difference is too high between commercial and waste obtained MOF, thus showing the cost-effectiveness of this method. 50 MOF-5 prepared from batteries for Zn source is priced at 42.1 $ per kg. Similarly the cost of Cu-BDC, both metal and organic linkers obtained from recycling from waste, is about 30 000 RMB per kg for conventional synthesis method, but that of the commercial one is too high.…”

Metal-organic frameworks and plastic: an emerging synergic partnership

“…Indeed, the use of recyclable waste as a supply for both organic and inorganic constituents offer a promising practice for the sustainable and low-cost production of high-value materials, including MOFs and MOF-composites [ 65 ], meeting at once the concepts of circular economy [ 66 , 67 ]. Recently, various significant studies of waste-derived MOFs and MOFs composites have been reported and reviewed [ 68–71 ]. This review mainly focuses on the use of PET wastes as a valuable source of ligands for MOFs production, highlighting that the PET-derived MOFs feature similar properties and adsorption performances when compared to MOFs produced with commercial organic ligands.…”