Sized-Controlled ZIF-8 Nanoparticle Synthesis from Recycled Mother Liquors: Environmental Impact Assessment

García-Palacín, Marta; Martínez, José I.; Paseta, Lorena; Deacon, Adam; Johnson, Timothy J.; Malankowska, Magdalena; Téllez, Carlos; Coronas, Joaquı́n

doi:10.1021/acssuschemeng.9b07593

Cited by 75 publications

(42 citation statements)

References 27 publications

(55 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It was proven that the use of recycled mother liquors decreased the amount of solvent that was used for cleaning, thus leading to a more sustainable process. More specifically, when NH 4 OH was used, the environmental impacts were less, in comparison to the process when NaOH was used [39]. Luo et al assessed the environmental and economic performance of two different routes for UiO-66-NH 2 synthesis concluding that the water-based product has significant environmental benefits [40].…”

Section: Life Cycle Assessment Of Nanomaterialsmentioning

confidence: 99%

Life Cycle Assessment on Different Synthetic Routes of ZIF-8 Nanomaterials

et al. 2021

View full text Add to dashboard Cite

In the last twenty years, research activity around the environmental applications of metal–organic frameworks has bloomed due to their CO2 capture ability, tunable properties, porosity, and well-defined crystalline structure. Thus, hundreds of MOFs have been developed. However, the impact of their production on the environment has not been investigated as thoroughly as their potential applications. In this work, the environmental performance of various synthetic routes of MOF nanoparticles, in particular ZIF-8, is assessed through a life cycle assessment. For this purpose, five representative synthesis routes were considered, and synthesis data were obtained based on available literature. The synthesis included different solvents (de-ionized water, methanol, dimethylformamide) as well as different synthetic steps (i.e., hours of drying, stirring, precursor). The findings revealed that the main environmental weak points identified during production were: (a) the use of dimethylformamide (DMF) and methanol (MeOH) as substances impacting environmental sustainability, which accounted for more than 85% of the overall environmental impacts in those synthetic routes where they were utilized as solvents and as cleaning agents at the same time; (b) the electricity consumption, especially due to the Greek energy mix which is fossil-fuel dependent, and accounted for up to 13% of the overall environmental impacts in some synthetic routes. Nonetheless, for the optimization of the impacts provided by the energy use, suggestions are made based on the use of alternative, cleaner renewable energy sources, which (for the case of wind energy) will decrease the impacts by up to 2%.

show abstract

Section: Life Cycle Assessment Of Nanomaterialsmentioning

confidence: 99%

Life Cycle Assessment on Different Synthetic Routes of ZIF-8 Nanomaterials

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Their potential use in large-scale applications as functional materials also poses the question of atom economy in their synthesis, as well as its environmental impact. In an effort to alleviate the impact of the ZIF-8 synthesis, the use of recycled mother liquors has been recently reported [ 8 ]. However, implementation of greener solvents is also becoming an option in reducing the environmental impact of ZIF synthesis.…”

Section: Introductionmentioning

confidence: 99%

Green Solvents as an Alternative to DMF in ZIF-90 Synthesis

2021

View full text Add to dashboard Cite

The use of green solvents as an alternative to dimethylformamide (DMF) in the synthesis of zeolitic imidazolate framework-90 (ZIF-90) was investigated. Two biobased aprotic dipolar solvents CyreneTM and γ-valerolactone (GVL) proved to successfully replace DMF in the synthesis at room temperature with a high product yield. While the CyreneTM—based product shows reduced porosity after activation, the use of GVL resulted in materials with preserved crystallinity and porosity after activation, without prior solvent exchange and a short treatment at 200 °C. The primary particles of 30 nm to 60 nm in all products further form agglomerates of different size and interparticle mesoporosity, depending on the type and molar ratios of solvents used.

show abstract

“…[20,21] Few works have been developed dealing with this issue with the example of ZIF-8. [21][22][23][24] In these research articles, the attempts to synthesize ZIF-8 from recycled mother liquors are related to the use of sodium hydroxide and potassium hydroxide as well as ammonia as deprotonators to initiate the nucleation and to favor the crystal growth. [25,26] As has been commented, ZIFs have been widely used as additives in mixed matrix membranes to improve the separation properties of membranes, [27,28] examples include some cases, with ZIF-94 as filler.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of ZIF‐94 from Recycled Mother Liquors: Study of the Influence of Its Loading on Postcombustion CO₂ Capture with Pebax Based Mixed Matrix Membranes

Hasan

Paseta

Malankowska

et al. 2021

Advanced Sustainable Systems

Self Cite

View full text Add to dashboard Cite

and unpredictable climatic changes such as rising sea levels, melting of glaciers throughout the entire planet [2] and affecting agriculture, [3] to name a few.A release of greenhouse gases will continue if no action is taken either for searching of green energy sources or filtering postcombustion gases to limit the global temperature rise below 2 °C (which was established during Paris conference in 2015). [4] Carbon capture and storage (CCS) is one of the methods of purification of flue gas after capturing CO 2 being a straightforward solution to avoid concerned challenges. There are several possible technologies for CCS either based on solvents (absorption), solid adsorbents (adsorption), cryogenic process or membrane-based approach. Even though chemical solvent treatment (especially by amines), physical absorption, and cryogenic separation are very effective methods, they are characterized by high vapor pressure and emission of toxic compounds. Moreover, it is very difficult to recycle them mainly due to the high reaction heat. [2,5] Membrane-based technology, a fast growing and environmental-friendly separation process, has the potential to replace conventional energy-intensive technologies and provides reliable solutions for CCS. This is mainly due to the low energy consumption linked to membranes, operation flexibility and simplicity, good stability, easy control and scale-up. Typically, polymeric membranes are used for the gas separation thanks to a solution-diffusion mechanism that benefits from the intrinsic property of the material for the gas transport. However, such membranes are bounded by their performance, known as the Robeson upper bound, [6] where gas permeability is sacrificed for gas mixture selectivity and vice versa. Moreover, higher membrane surface area is required for the expected separation to be industrially attractive.A class of polymeric composite membranes named mixed matrix membranes (MMMs) with specific fillers coupled with other existing processes (cryogenic/absorption) could be the best technology for CO 2 capture. MMMs are made of a base polymeric matrix and a compatible inorganic micro/nanosized filler that is integrated inside the micropores of polymeric materials to improve their properties. [7] In fact, the filler contributes to favor the permeability of the desired component in the mixture through the modification of the diffusivity and solubility Global energy demand is met in large part, by burning of fossil fuels, which is causing global warming. Mixed matrix membranes (MMMs) with metal organic frameworks (MOFs) as fillers are an interesting alternative for capturing post combustion CO 2 which would make the energy sector sustainable. This research is focused on the synthesis of MOF ZIF-94 from the recycling of its mother liquors and the incorporation of synthesized MOF into a Pebax MH 1657 for MMM fabrication. The pH and the temperature of ZIF-94 synthesis are modified and monitored and this results in various nanoparticle diameters (average particle size in the range of...

show abstract

Sized-Controlled ZIF-8 Nanoparticle Synthesis from Recycled Mother Liquors: Environmental Impact Assessment

Cited by 75 publications

References 27 publications

Life Cycle Assessment on Different Synthetic Routes of ZIF-8 Nanomaterials

Life Cycle Assessment on Different Synthetic Routes of ZIF-8 Nanomaterials

Green Solvents as an Alternative to DMF in ZIF-90 Synthesis

Synthesis of ZIF‐94 from Recycled Mother Liquors: Study of the Influence of Its Loading on Postcombustion CO₂ Capture with Pebax Based Mixed Matrix Membranes

Contact Info

Product

Resources

About

Sized-Controlled ZIF-8 Nanoparticle Synthesis from Recycled Mother Liquors: Environmental Impact Assessment

Cited by 75 publications

References 27 publications

Life Cycle Assessment on Different Synthetic Routes of ZIF-8 Nanomaterials

Life Cycle Assessment on Different Synthetic Routes of ZIF-8 Nanomaterials

Green Solvents as an Alternative to DMF in ZIF-90 Synthesis

Synthesis of ZIF‐94 from Recycled Mother Liquors: Study of the Influence of Its Loading on Postcombustion CO2 Capture with Pebax Based Mixed Matrix Membranes

Contact Info

Product

Resources

About

Synthesis of ZIF‐94 from Recycled Mother Liquors: Study of the Influence of Its Loading on Postcombustion CO₂ Capture with Pebax Based Mixed Matrix Membranes