A bimetallic-MOF catalyst for efficient CO<sub>2</sub> photoreduction from simulated flue gas to value-added formate

Guo, Shaohong; Qi, Xiang-Juan; Zhou, Huimin; Zhou, Jie; Wang, Xiaohui; Dong, Man; Zhao, Xue; Sun, C. P.; Wang, Xin-Long; Su, Zhong‐Min

doi:10.1039/d0ta00205d

Cited by 80 publications

(45 citation statements)

References 51 publications

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“…On the other hand, the CO 2 adsorption capacity for Fe 2 Mn-MOF was 42.0 cm 3 ·g –1 , which was substantially larger than those for Fe 3 -MOF (20.4 cm 3 ·g –1 ) and Fe 2 Ni-MOF (9.1 cm 3 ·g –1 ) (Figure B). These adsorption properties were lower than those previously reported NH 2 -UiO-66(Zr) (68 cm 3 ·g –1 ) and Mg-MOF-74 (127 cm 3 ·g –1 ) . However, we also found a correlation between the CO 2 adsorption properties (25 °C, 1 atm) for Fe 2 M-MOFs and the photocatalytic activity (Figure C), suggesting that the enhancement of CO 2 adsorption capacity by Mn 2+ substitution in metal clusters contributed to the high activity of Fe 2 Mn-MOF.…”

Section: Resultscontrasting

confidence: 76%

Photoreduction of Carbon Dioxide to Formic Acid with Fe-Based MOFs: The Promotional Effects of Heteroatom Doping and Alloy Nanoparticle Confinement

Mori

Matsuo

Kondo

et al. 2021

ACS Appl. Energy Mater.

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The development of photocatalytic systems with high activity to trigger CO2 reduction into formic acid (FA, HCOOH), which is regarded as a promising hydrogen storage compound, is an attractive option for simultaneously solving energy and environmental problems. The effects of heteroatom doping as well as the confinement of Pd alloy nanoparticles (NPs) on an amine-functionalized Fe-based metal organic framework (Fe3-MOF) were investigated. The substitution of different metals in the metal cluster nodes significantly changed the CO2 adsorption capacity as well as the CO2 activation properties under visible light irradiation, with Mn2+ doping particularly improving the performance of both. The confinement of PdAu NPs inhibited electron–hole recombination by efficiently trapping excited electrons and then promoting photocatalytic FA production. By optimizing the parameters, a high FA production of 725 μmol·g–1 can be achieved after 24 h, which is 3.6 times greater than that obtained with unmodified Fe3-MOF. The results of the present study have the potential to greatly enrich the applications of MOF-based photocatalysts with the aim of developing economical CO2-mediated hydrogen storage energy cycling.

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Section: Resultscontrasting

confidence: 76%

Photoreduction of Carbon Dioxide to Formic Acid with Fe-Based MOFs: The Promotional Effects of Heteroatom Doping and Alloy Nanoparticle Confinement

Mori

Matsuo

Kondo

et al. 2021

ACS Appl. Energy Mater.

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“…Because of the synergistic effect between Cu and Mg, the photostability of Mg x Cu 1– x -MOF-74 was enhanced considerably. 32 Furthermore, the stability of Mg-MOF-74 was highly affected by the M–O bond on the top of the metal–organic frame (M represents the metal species) and the metal center atoms (Mg). 31 The distortion and deformation of the coordination environment of Cu 2+ (i.e., Jahn–Teller effect) lead to the contraction of M–O bonds and improved photostability of Mg x Cu 1– x -MOF-74.…”

Section: Resultsmentioning

confidence: 99%

“… 25 − 27 Although bimetallic Mg-MOF-74 is widely used in thermocatalysis 28 , 29 and adsorption, 30 , 31 its use in CO 2 photocatalytic reduction is limited. 32 Guo et al prepared bimetallic NiMg-MOF-74 catalysts by using a solvothermal method and revealed that CO 2 can be photocatalytically reduced into formate over NiMg-MOF-74 under extremely harsh flue gas conditions. Furthermore, the excellent stability of NiMg-MOF-74 in the photocatalytic reaction was demonstrated through five cyclic photocatalytic experiments and X-ray diffraction (XRD) patterns after the photocatalytic reaction.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, the excellent stability of NiMg-MOF-74 in the photocatalytic reaction was demonstrated through five cyclic photocatalytic experiments and X-ray diffraction (XRD) patterns after the photocatalytic reaction. 32 Consequently, based on the good CO 2 uptake of Mg-MOF-74 and the photostability of the Cu-based MOF, a bimetallic strategy was proposed to strengthen Mg-MOF-74 photostability for CO 2 adsorption.…”

Section: Introductionmentioning

confidence: 99%

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One-Pot Method Synthesis of Bimetallic MgCu-MOF-74 and Its CO₂ Adsorption under Visible Light

et al. 2022

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A magnesium-based metal–organic framework (Mg-MOF-74) exhibits excellent CO 2 adsorption under ambient conditions. However, the photostability of Mg-MOF-74 for CO 2 adsorption is poor. In this study, Mg x Cu 1– x -MOF-74 was synthesized by using a facile “one-pot” method. Furthermore, the effects of synthesis conditions on the CO 2 adsorption capacity were investigated comprehensively. X-ray diffraction, Fourier transform infrared, scanning electron microscopy, thermo gravimetric analysis, inductively coupled plasma atomic emission spectroscopy, ultraviolet–visible spectroscopy and photoluminescence spectroscopy, and CO 2 static adsorption–desorption techniques were used to characterize the structures, morphology, and physicochemical properties of Mg x Cu 1– x -MOF-74. CO 2 uptake of Mg x Cu 1– x -MOF-74 under visible light illumination was measured by the CO 2 static adsorption test combined with the Xe lamp. The results revealed that Mg x Cu 1– x -MOF-74 exhibited excellent photocatalytic activity. Furthermore, the CO 2 adsorption capacity of Mg x Cu 1– x -MOF-74 was excellent at a synthesis temperature and time of 398 K and 24 h in dimethylformamide (DMF)-EtOH-MeOH mixing solvents, respectively. Mg x Cu 1– x -MOF-74 retained a crystal structure similar to that of the corresponding monometallic MOF-74, and its CO 2 uptake under visible light was superior to that of the corresponding monometallic MOF-74. Particularly, the CO 2 uptake of Mg 0.4 Cu 0.6 -MOF-74 under Xe lamp illumination for 24 h was the highest, up to 3.52 mmol·g –1 , which was 1.18 and 2.09 times higher than that of Mg- and Cu-MOF-74, respectively. The yield of the photocatalytic reduction of CO 2 to CO was 49.44 μmol·g cat –1 over Mg 0.4 Cu 0.6 -MOF-74 under visible light for 8 h. Mg 2+ and Cu 2+ functioned as open alkali metal that could adsorb and activate CO 2 . The synergistic effect between Mg and Cu metal strengthened Mg x Cu 1– x -MOF-74 photostability for CO 2 adsorption and broadened the scope of its photocatalytic application. The “bimetallic” strategy exhibits considerable potential for use in MOF-based semic...

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“…Over the recent years, the progressively increasing CO 2 emission released by fossil fuel combustion brings out serious climate change and has threaten the human health, [1–3] so solving the environmental crisis becomes an extremely urgent global issue. It is generally acknowledged to be an efficient strategy for alleviating CO 2 pollution by photocatalytic reduction into value‐added chemicals such as CO, [4–7] CH 4 , [8–10] HCOOH [11–13] . Nevertheless, because of chemical inertness, it is hard to activate and convert CO 2 molecules, which thus requires reductive catalysts to help this reaction process [14–16] .…”

Section: Introductionmentioning

confidence: 99%

A Purely Inorganic Quasi‐Keggin Polyoxometalate for Photocatalytic Conversion of Carbon Dioxide to Carbon Monoxide

et al. 2021

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A pure inorganic cluster, H 47 Na 2 Co 4 Mo 24 (PO 4 ) 11 O 72 • 15H 2 O (denoted as {Co 4 Mo 24 }), has been successfully synthesized by hydrothermal method. Notably, the assembly of a central {Co 2 PO 4 } tetrahedron and four peripheral {Co[P 4 Mo 6 ]} fragments gives rise to a rare "quasi-Keggin" structure of {Co 4 Mo 24 }, in which Co linkers continue to bridge adjacent substructures, resulting in the generation of 3D framework with large cavities. Benefitting from the combination of strong reductive {P 4 Mo 6 }units and Co active centers, the photocatalytic system with {Co 4 Mo 24 } as heterogeneous catalyst exhibits excellent activity for CO 2 conversion to CO, offering the CO formation rate of 1848.3 μmol g À 1 h À 1 with high selectivity of 97.0 %. Besides, thermogravimetric and X-ray diffraction analysis confirm that {Co 4 Mo 24 } can maintain stable during the photocatalytic reaction process.

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A bimetallic-MOF catalyst for efficient CO₂ photoreduction from simulated flue gas to value-added formate

Abstract: Bimetallic Ni/Mg-MOF-74 was reported as a catalyst for efficient CO2 photoreduction from simulated flue gas to generate value-added formate.

Cited by 80 publications

References 51 publications

Photoreduction of Carbon Dioxide to Formic Acid with Fe-Based MOFs: The Promotional Effects of Heteroatom Doping and Alloy Nanoparticle Confinement

Photoreduction of Carbon Dioxide to Formic Acid with Fe-Based MOFs: The Promotional Effects of Heteroatom Doping and Alloy Nanoparticle Confinement

One-Pot Method Synthesis of Bimetallic MgCu-MOF-74 and Its CO₂ Adsorption under Visible Light

A Purely Inorganic Quasi‐Keggin Polyoxometalate for Photocatalytic Conversion of Carbon Dioxide to Carbon Monoxide

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A bimetallic-MOF catalyst for efficient CO2 photoreduction from simulated flue gas to value-added formate

Abstract: Bimetallic Ni/Mg-MOF-74 was reported as a catalyst for efficient CO2 photoreduction from simulated flue gas to generate value-added formate.

Cited by 80 publications

References 51 publications

Photoreduction of Carbon Dioxide to Formic Acid with Fe-Based MOFs: The Promotional Effects of Heteroatom Doping and Alloy Nanoparticle Confinement

Photoreduction of Carbon Dioxide to Formic Acid with Fe-Based MOFs: The Promotional Effects of Heteroatom Doping and Alloy Nanoparticle Confinement

One-Pot Method Synthesis of Bimetallic MgCu-MOF-74 and Its CO2 Adsorption under Visible Light

A Purely Inorganic Quasi‐Keggin Polyoxometalate for Photocatalytic Conversion of Carbon Dioxide to Carbon Monoxide

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A bimetallic-MOF catalyst for efficient CO₂ photoreduction from simulated flue gas to value-added formate

One-Pot Method Synthesis of Bimetallic MgCu-MOF-74 and Its CO₂ Adsorption under Visible Light