Improving MOF stability: approaches and applications

Chemical Science, Год журнала: 2019, Номер 10(44), С. 10209 - 10230

Опубликована: Янв. 1, 2019

This review summarizes recent advances in the design and synthesis of stable MOFs highlights relationships between stability functional applications.

Язык: Английский

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Recent Advances in Carbon Dioxide Hydrogenation to Methanol via Heterogeneous Catalysis

Chemical Reviews, Год журнала: 2020, Номер 120(15), С. 7984 - 8034

Опубликована: Фев. 12, 2020

The utilization of fossil fuels has enabled an unprecedented era prosperity and advancement well-being for human society. However, the associated increase in anthropogenic carbon dioxide (CO2) emissions can negatively affect global temperatures ocean acidity. Moreover, are a limited resource their depletion will ultimately force one to seek alternative sources maintain sustainable economy. Converting CO2 into value-added chemicals fuels, using renewable energy, is promising approaches this regard. Major advances energy-efficient conversion potentially alleviate emissions, reduce dependence on nonrenewable resources, minimize environmental impacts from portions displaced. Methanol (CH3OH) important chemical feedstock be used as fuel internal combustion engines cells, well platform molecule production fuels. As approaches, thermocatalytic hydrogenation CH3OH via heterogeneous catalysis attracted great attention past decades. progress been made development various catalysts including metals, metal oxides, intermetallic compounds. In addition, efforts also put forth define catalyst structures nanoscale by taking advantage nanostructured materials, which enables tuning composition modulation surface endows more catalytic performance comparison bulk materials prepared traditional methods. Despite these achievements, significant challenges still exist developing robust with good long-term stability. review, we provide comprehensive overview recent area, especially focusing structure–activity relationship, importance combining measurements, situ characterization, theoretical studies understanding reaction mechanisms identifying key descriptors designing improved catalysts.

Язык: Английский

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Metal–Organic Framework-Based Hierarchically Porous Materials: Synthesis and Applications

Chemical Reviews, Год журнала: 2021, Номер 121(20), С. 12278 - 12326

Опубликована: Июль 19, 2021

Metal-organic frameworks (MOFs) have been widely recognized as one of the most fascinating classes materials from science and engineering perspectives, benefiting their high porosity well-defined tailored structures components at atomic level. Although intrinsic micropores endow size-selective capability surface area, etc., narrow pores limit applications toward diffusion-control large-size species involved processes. In recent years, construction hierarchically porous MOFs (HP-MOFs), MOF-based composites, derivatives has captured widespread interest to extend conventional materials. this Review, advances in design, synthesis, functional are summarized. Their structural characters various applications, including catalysis, gas storage separation, air filtration, sewage treatment, sensing energy storage, demonstrated with typical reports. The comparison HP-MOFs traditional (e.g., zeolite, silica, carbons, metal oxides, polymers), subsisting challenges, well future directions research field, also indicated.

Язык: Английский

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Functional metal–organic frameworks as effective sensors of gases and volatile compounds

Chemical Society Reviews, Год журнала: 2020, Номер 49(17), С. 6364 - 6401

Опубликована: Янв. 1, 2020

Developing efficient sensor materials with superior performance for selective, fast and sensitive detection of gases volatile organic compounds (VOCs) is essential human health environmental protection, through monitoring indoor outdoor air pollutions, managing industrial processes, controlling food quality assisting early diagnosis diseases. Metal-organic frameworks (MOFs) are a unique type crystalline porous solid material constructed from metal nodes (metal ions or clusters) functional ligands. They have been investigated extensively possible use as high sensors the many different VOCs in recent years, due to their large surface area, tunable pore size, functionalizable sites intriguing properties, such electrical conductivity, magnetism, ferroelectricity, luminescence chromism. The porosity MOFs allows them interact strongly various analytes, including VOCs, thus resulting easily measurable responses physicochemical parameters. Although much work on MOF-based luminescent summarized several excellent reviews (up 2018), comprehensive overview these sensing based chemiresistive, magnetic, ferroelectric, colorimertic mechanisms missing. In this review, we highlight most progress developing MOF switching an emphasis electricity, ferroelectricity We provide analysis MOF-analyte interactions which play key role switches. discuss detail applications detecting oxygen, water vapor, toxic (such hydrogen sulfide, ammonia, sulfur dioxide, nitrous oxide, carbon oxides disulfide) aromatic aliphatic hydrocarbons, ketones, alcohols, aldehydes, chlorinated hydrocarbons N,N'-dimethylformamide). Overall, review serves timely source information provides insight future development advanced next-generation gas VOC sensors.

Язык: Английский

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Metal–Organic Framework-Based Catalysts with Single Metal Sites

Chemical Reviews, Год журнала: 2020, Номер 120(21), С. 12089 - 12174

Опубликована: Май 1, 2020

Metal-organic frameworks (MOFs) are a class of distinctive porous crystalline materials constructed by metal ions/clusters and organic linkers. Owing to their structural diversity, functional adjustability, high surface area, different types MOF-based single sites well exploited, including coordinately unsaturated from nodes metallolinkers, as active species immobilized MOFs. Furthermore, controllable thermal transformation MOFs can upgrade them nanomaterials functionalized with single-atom catalysts (SACs). These unique features derivatives enable serve highly versatile platform for catalysis, which has actually been becoming rapidly developing interdisciplinary research area. In this review, we overview the recent developments catalysis at in emphasis on structures applications thermocatalysis, electrocatalysis, photocatalysis. We also compare results summarize major insights gained works providing challenges prospects emerging field.

Язык: Английский

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Emerging trends in porous materials for CO₂capture and conversion

Chemical Society Reviews, Год журнала: 2020, Номер 49(13), С. 4360 - 4404

Опубликована: Янв. 1, 2020

The presence of an excessive concentration CO2 in the atmosphere needs to be curbed with suitable measures including reduction emissions at stationary point sources such as power plants through carbon capture technologies and subsequent conversion captured into non-polluting clean fuels/chemicals using photo and/or electrocatalytic pathways. Porous materials have attracted much attention for recent past; they witnessed significant advancements their design implementation conversion. In this context, emerging trends major porous adsorbents MOFs, zeolites, POPs, carbons, mesoporous are discussed. Their surface texture chemistry, influence various other features on efficiency, selectivity, recyclability explained compared thoroughly. scientific technical advances material structure versus provide deep insights designing effective materials. review concludes a summary, which compiles key challenges field, current critical development materials, future research directions combined possible solutions realising deployment

Язык: Английский

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Self-adaptive dual-metal-site pairs in metal-organic frameworks for selective CO2 photoreduction to CH4

Nature Catalysis, Год журнала: 2021, Номер 4(8), С. 719 - 729

Опубликована: Авг. 19, 2021

Язык: Английский

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Recent advances in carbon capture storage and utilisation technologies: a review

Environmental Chemistry Letters, Год журнала: 2020, Номер 19(2), С. 797 - 849

Опубликована: Ноя. 22, 2020

Abstract Human activities have led to a massive increase in $$\hbox {CO}_{2}$$ CO 2 emissions as primary greenhouse gas that is contributing climate change with higher than $$1\,^{\circ }\hbox {C}$$ 1 ∘ C global warming of the pre-industrial level. We evaluate three major technologies are utilised for carbon capture: pre-combustion, post-combustion and oxyfuel combustion. review advances capture, storage utilisation. compare uptake techniques dioxide separation. Monoethanolamine most common sorbent; yet it requires high regeneration energy 3.5 GJ per tonne . Alternatively, recent sorbent technology reveal novel solvents such modulated amine blend lower 2.17 Graphene-type materials show adsorption capacity 0.07 mol/g, which 10 times specific types activated carbon, zeolites metal–organic frameworks. geosequestration provides an efficient long-term strategy storing captured geological formations factor at Gt-scale within operational timescales. Regarding utilisation route, currently, gross 200 million tonnes year, roughly negligible compared extent anthropogenic emissions, 32,000 year. Herein, we different methods direct routes, i.e. beverage carbonation, food packaging oil recovery, chemical industries fuels. Moreover, investigated additional base-load power generation, seasonal storage, district cooling cryogenic air capture using geothermal energy. Through bibliometric mapping, identified research gap literature this field future investigations, instance, designing new stable ionic liquids, pore size selectivity frameworks enhancing solvents. areas techno-economic evaluation solvents, process design dynamic simulation require further effort well development before pilot- commercial-scale trials.

Язык: Английский

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Photocatalytic CO2 reduction over metal-organic framework-based materials

Coordination Chemistry Reviews, Год журнала: 2020, Номер 412, С. 213262 - 213262

Опубликована: Март 10, 2020

Язык: Английский

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Photoinduction of Cu Single Atoms Decorated on UiO-66-NH₂ for Enhanced Photocatalytic Reduction of CO₂ to Liquid Fuels

Journal of the American Chemical Society, Год журнала: 2020, Номер 142(45), С. 19339 - 19345

Опубликована: Окт. 29, 2020

Photocatalytic reduction of CO2 to value-added fuels is a promising route reduce global warming and enhance energy supply. However, poor selectivity low efficiency catalysts are usually the limiting factor their applicability. Herein, photoinduction method was developed achieve formation Cu single atoms on UiO-66-NH2 support (Cu SAs/UiO-66-NH2) that could significantly boost photoreduction liquid fuels. Notably, SAs/UiO-66-NH2 achieved solar-driven conversion methanol ethanol with an evolution rate 5.33 4.22 μmol h-1 g-1, respectively. These yields were much higher than those pristine nanoparticles/UiO-66-NH2 composites. Theoretical calculations revealed introduction SAs greatly facilitates CHO* CO* intermediates, leading excellent toward ethanol. This study provides new insights for designing high-performance catalyst photocatalytic at atomic scale.

Язык: Английский

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