Visible-light reduction CO 2 with dodecahedral zeolitic imidazolate framework ZIF-67 as an efficient co-catalyst

Qin, Jiani; Wang, Sibo; Wang, Xinchen

doi:10.1016/j.apcatb.2017.03.018

Cited by 506 publications

(217 citation statements)

References 62 publications

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“…The one peaking at 240 and 307 nm may be attributed to pπ (Oterminal) →dπ* (Mo) electronic transitions in the Mo=O bond and dπ–pπ–dπ electronic transitions between the energetic levels of the Mo−O−Mo bond. The moderate absorption bands in the range 450–620 nm are ascribed to coordinated Co II whereas the weak and broad bands at 600–700 nm are typical absorptions coming from reduced polyoxoanions . The optical absorption spectrum of the composite (Figure b, red curve) exhibits characteristic peaks of both [Co 20 Mo 16 P 24 ] 4− and [Ru(bpy) 3 ] 2+ , which leads to the wide and high adsorption of visible light.…”

Section: Resultsmentioning

confidence: 99%

“…The moderatea bsorption bands in the range 450-620 nm are ascribed to coordinated Co II whereas the weak and broad bands at 600-700 nm are typical absorptions coming from reduced polyoxoanions. [35][36][37] The optical absorption spectrum of the composite (Figure 2b (Figure 2c). Considering the reported highesto ccupied molecular orbital( HOMO) and lowest unoccupied molecular orbital( LUMO) energy levels of [Ru(bpy) 3 ]Cl 2 are À5.68 and À3.19 eV (versus vacuum level; Figure 2d), [38] the band alignment between [Ru(bpy) 3 ]Cl 2 and Co 2 [Co 20 Mo 16 P 24 ]w ill facilitatet he photoinduced electron transfer.…”

Section: Introductionmentioning

confidence: 99%

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Highly Efficient Photoreduction of Low‐Concentration CO₂to Syngas by Using a Polyoxometalates/Ru^IIComposite

You

Lang

et al. 2020

Chemistry A European J

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At present, the fixation of CO2 always requires it to be extracted from the atmosphere first, which leads to more energy consumption. Thus, direct photoreduction of low‐concentration CO2 to useful chemicals (e.g., syngas) under sunlight is significant from an energy‐saving and environmentally friendly perspective. Here, the design and fabrication of a [Ru(bpy)3]/[Co20Mo16P24] composite is demonstrated for visible‐light‐driven syngas production from diluted CO2 (3–20 %) gas with a high yield of approximately 1000 TONs (turnover number of syngas). This activity is an order of magnitude higher than the reported system with [Ru(bpy)3]2+ participation. With evidence from ultrafast transient absorption, GC‐MS, 1H NMR spectroscopy and in situ transient photovoltage tests, a clear and fundamental understanding of the highly efficient photoreduction of CO2 by the [Ru(bpy)3]/[Co20Mo16P24] composite is achieved. Making use of the structure and property designable polyoxometalates towards the photo‐fixation of CO2 is a conceptually distinct and commercially interesting strategy for making useful chemicals and environmental protection.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Highly Efficient Photoreduction of Low‐Concentration CO₂to Syngas by Using a Polyoxometalates/Ru^IIComposite

You

Lang

et al. 2020

Chemistry A European J

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“…Recently, some novel MOF materials such as [Co 3 (OH) 3 (NTB) (4,4′-bpy) 1.5 ]⋅DEF (Co 6 -MOF, NTB = 4,4′,4″-nitrilotribenzoic acid, 4,4′-bpy = 4,4′-bipyridine, DEF = N,N-diethylformamide) [109] and Co-ZIF-67 [178] were synthesized to obtain the composites of the Ru complex photosensitizer ([Ru(2,2′-bpy) 3 ] Cl 2 ·6H 2 O) and MOFs. They all exhibited high photocatalytic efficiencies in the conversion of CO 2 into CO and H 2 , compared with their constituent Ru-complex photosensitizer.…”

Section: Photosensitizer-mof Compositesmentioning

confidence: 99%

Metal–Organic‐Framework‐Based Catalysts for Photoreduction of CO₂

2018

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Photoreduction of CO into reusable carbon forms is considered as a promising approach to address the crisis of energy from fossil fuels and reduce excessive CO emission. Recently, metal-organic frameworks (MOFs) have attracted much attention as CO photoreduction-related catalysts, owing to their unique electronic band structures, excellent CO adsorption capacities, and tailorable light-absorption abilities. Recent advances on the design, synthesis, and CO reduction applications of MOF-based photocatalysts are discussed here, beginning with the introduction of the characteristics of high-efficiency photocatalysts and structural advantages of MOFs. The roles of MOFs in CO photoreduction systems as photocatalysts, photocatalytic hosts, and cocatalysts are analyzed. Detailed discussions focus on two constituents of pure MOFs (metal clusters such as Ti-O, Zr-O, and Fe-O clusters and functional organic linkers such as amino-modified, photosensitizer-functionalized, and electron-rich conjugated linkers) and three types of MOF-based composites (metal-MOF, semiconductor-MOF, and photosensitizer-MOF composites). The constituents, CO adsorption capacities, absorption edges, and photocatalytic activities of these photocatalysts are highlighted to provide fundamental guidance to rational design of efficient MOF-based photocatalyst materials for CO reduction. A perspective of future research directions, critical challenges to be met, and potential solutions in this research field concludes the discussion.

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“…[62] Ir-, Re-, and Ru-based complexes wered oped into UiO-67, and the Re-doped MOF showede nhanced performance forp hotocatalytic CO 2 reduction to CO. Inductively coupled plasma-mass spectrometry (ICP-MS) indicated that 43.6 %o fR eh ad been doped into the UiO-67s tructure, and the as-prepared hybrid catalystr eached the CO TON of 10.9 from the 20 hr eaction. [51] The ZIF-67/Ru-dye catalytic system could efficientlyc onvertC O 2 to CO under visible-light irradiation with ah igh TON of 112. Qine tal.…”

Section: Mof-based Composites For Co 2 Reductionmentioning

confidence: 99%

“…[67] With the aid of ultrafast spectroscopy,t hey elucidated that charge transfer can occur between the photoexcited inorganic semiconductors and MOFs (Figure 17 c,d). b) The dependence of the wavelengtho flight on the evolutiono fC Oa nd H 2 .Reproduced with permission from reference [51].Copyright 2017E lsevier.c )The structure of Co-ZIF-9.H ydrogen atomsa re omitted for clarity. The CO 2 molecules could easily penetrate the TiO 2 shells of the hybrid structure,f ollowed by the photocatalytic reduction process with improved performance.…”

Section: Mof-based Composites For Co 2 Reductionmentioning

confidence: 99%

Metal–Organic Frameworks and Their Derived Materials as Electrocatalysts and Photocatalysts for CO₂ Reduction: Progress, Challenges, and Perspectives

Zhang

Tan

et al. 2018

Chemistry A European J

131

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Excessive CO emission due to a large amount of fossil fuel utilization has become a widespread concern, which causes both environmental and energy problems. To solve these issues, electrocatalytic and photocatalytic reduction of CO to produce value-added chemicals have gained immense attention. Recently, metal-organic frameworks (MOFs) and their derived materials with high specific surface areas, controllable pore structures, and tunable chemical properties exhibit promising performance among the reported catalytic materials for CO conversion. This review describes the recent advances on the rational design and synthesis of MOF-based electrocatalysts and photocatalysts for CO reduction. The importance of the catalytic processes is highlighted, followed by systematic understanding of MOF-based catalysts for CO reduction through electrochemical and photochemical approaches. Special emphasis of this review is to introduce basic catalyst design strategies and synthesis methods as well as their resulting electrocatalysts and photocatalysts. One of the major goals is to elucidate the structures and properties that link to their catalytic activity, selectivity, and stability towards to CO reduction. We also outline the challenges in this research area and propose the potential strategies for the rational design and synthesis of high-performance catalysts.

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Visible-light reduction CO 2 with dodecahedral zeolitic imidazolate framework ZIF-67 as an efficient co-catalyst

Cited by 506 publications

References 62 publications

Highly Efficient Photoreduction of Low‐Concentration CO₂to Syngas by Using a Polyoxometalates/Ru^IIComposite

Highly Efficient Photoreduction of Low‐Concentration CO₂to Syngas by Using a Polyoxometalates/Ru^IIComposite

Metal–Organic‐Framework‐Based Catalysts for Photoreduction of CO₂

Metal–Organic Frameworks and Their Derived Materials as Electrocatalysts and Photocatalysts for CO₂ Reduction: Progress, Challenges, and Perspectives

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Visible-light reduction CO 2 with dodecahedral zeolitic imidazolate framework ZIF-67 as an efficient co-catalyst

Cited by 506 publications

References 62 publications

Highly Efficient Photoreduction of Low‐Concentration CO2to Syngas by Using a Polyoxometalates/RuIIComposite

Highly Efficient Photoreduction of Low‐Concentration CO2to Syngas by Using a Polyoxometalates/RuIIComposite

Metal–Organic‐Framework‐Based Catalysts for Photoreduction of CO2

Metal–Organic Frameworks and Their Derived Materials as Electrocatalysts and Photocatalysts for CO2 Reduction: Progress, Challenges, and Perspectives

Contact Info

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Resources

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Highly Efficient Photoreduction of Low‐Concentration CO₂to Syngas by Using a Polyoxometalates/Ru^IIComposite

Highly Efficient Photoreduction of Low‐Concentration CO₂to Syngas by Using a Polyoxometalates/Ru^IIComposite

Metal–Organic‐Framework‐Based Catalysts for Photoreduction of CO₂

Metal–Organic Frameworks and Their Derived Materials as Electrocatalysts and Photocatalysts for CO₂ Reduction: Progress, Challenges, and Perspectives