Eosin Y‐Functionalized Conjugated Organic Polymers for Visible‐Light‐Driven CO<sub>2</sub> Reduction with H<sub>2</sub>O to CO with High Efficiency

Yu, Xiaoxiao; Yang, Zhenzhen; Qiu, Bing; Guo, Shien; Yang, Peng; Yu, Bo; Zhang, Hongye; Zhao, Yanfei; Yang, Xinzheng; Han, Buxing; Liu, Zhimin

doi:10.1002/anie.201812790

Cited by 191 publications

(131 citation statements)

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“…CO 2 photoreduction driven by sunlight not only provides an alternate approach for the generation of useful chemicals (e.g., syngas) in an environmentally friendly, sustainable, and low‐cost way but also alleviates the environmental burden caused by excessive CO 2 emissions. Numerous photocatalysts with high activity have been developed for CO 2 reduction to syngas, but they usually use pure CO 2 , which needs to be extracted from the atmosphere first . The high cost and energy consumption of the technology used in CO 2 condensation (e.g., selective adsorption and desorption by porous materials) makes the utilization of high pressure (or pure/high concentration) CO 2 unfavorable .…”

Section: Introductionmentioning

confidence: 99%

“…Numerous photocatalysts with high activity have been developedf or CO 2 reduction to syngas, but they usually use pure CO 2 ,w hich needs to be extracted from the atmosphere first. [6][7][8][9][10][11] The high cost and energy consumption of the technologyu sed in CO 2 condensation (e.g.,s electivea dsorption and desorption by porousm aterials) makes the utilization of high pressure (or pure/high concentration) CO 2 unfavorable. [12][13][14][15] Therefore, the exploration of photocatalytic systems that can make direct use of low-contentC O 2 from gas mixtures, for example, flue gas (3-15 %C O 2 )a nd highly efficient generation of syngas is of great significance.…”

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: Introductionmentioning

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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“…The highest performance for CO production was achieved by network 44 and was 0.33 µmol h −1 with a selectivity of 92%. [ 179 ] In this study, DFT was used to show that the Eosin Y moiety was able to adsorb carbon dioxide and water molecules, via its COO and OH functional groups. This work highlights the importance of effective electron transfer into adsorbed CO 2 for efficient CO 2 photocatalysis.…”

Section: Photocatalysts For Carbon Dioxide Photoreductionmentioning

confidence: 99%

Photocatalysts Based on Organic Semiconductors with Tunable Energy Levels for Solar Fuel Applications

Koščo

Moruzzi

Willner

et al. 2020

Advanced Energy Materials

128

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development of sustainable energy sources. [1] Among these, solar energy has the greatest potential, with more solar energy irradiating the surface of the Earth in one hour than human society consumes in one year. [2] However, the intermittency of solar energy limits its utility. In order for solar energy to provide power on a scale commensurate with that currently generated from fossil fuels, it must be stored and supplied to users on demand. [3] On short timescales (seconds to days) this is possible to achieve using batteries, which can store electricity generated from solar photovoltaics. [4,5] However, the expensive materials required and their relatively high rates of self-discharge make batteries unsuitable for seasonal energy storage. [6,7] Storing solar energy in the chemical bonds of a fuel, which can be stored indefinitely at low cost, transported, and converted to electrical or heat energy on demand is therefore highly desirable. Solar fuels such as H 2 , CH 3 OH, and CH 4 can be generated from abundant and renewable feedstocks such as water and CO 2 using semiconductor photocatalysts. The vast majority of research to date has focused on photocatalysts fabricated from wide bandgap semiconductors such as TiO 2 , [8] SrTiO 3 , [9] and carbon nitride (CN). [10-14] Photocatalysts based on some of these semiconductors have achieved operational stabilities exceeding 1000 h and maximum external quantum efficiencies (EQEs) of over 50% for overall water splitting. [9,15-18] However, their wide and difficult to tune bandgaps mean that photocatalysts fabricated from these semiconductors are almost exclusively active at UV wavelengths, which carry <5% of solar energy. [19] This fundamentally limits their efficiency below what is required for many practical solar fuels applications. For example, an estimated solar-to-hydrogen efficiency (η STH) of 5-10% would be required to photocatalytically produce H 2 at a cost that meets the U.S. Department of Energy's target of $2-4 kg −1 , which is difficult or impossible to achieve with the aforementioned wide bandgap semiconductors. [20] This has stimulated interest in developing novel photocatalysts based on semiconductors with narrower bandgaps that are able to absorb a greater proportion of the solar spectrum and can therefore achieve higher maximum theoretical solar energy conversion efficiencies. [18] Among these, non-CN organic semiconductors have recently gained prominence due to the Earth abundance of their constituent elements, and their high extinction coefficients and The photocatalytic synthesis of solar fuels such as hydrogen and methane from water and carbon dioxide is a promising strategy to store abundant solar energy in order to overcome its intermittency. Although this approach has been studied for decades using inorganic semiconductor photocatalysts, organic semiconductors have only recently gained notable attention. The tunable energy levels of organic semiconductors can enable the design of photocatalysts with optimized solar light utilization. However,...

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“…[ 100 ] Using CMPs for CO 2 photoreduction could offer a promising solution due to their tunable band structure and high reduction potential. [ 19,101–105 ]…”

Section: Photocatalytic Reactionsmentioning

confidence: 99%

Recent Advances of Conjugated Microporous Polymers in Visible Light–Promoted Chemical Transformations

Qian

Zhang

2020

Solar RRL

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In the past decades, enormous efforts have been put into visible light–promoted photocatalytic chemical transformations. Among the intensely studied photocatalytic systems, metal‐free, pure organic and heterogeneous photocatalysts based on conjugated microporous polymers (CMPs), a class of organic porous materials featuring π‐conjugated backbone and permanent microporosity, draw much attention. The CMP‐based photocatalysts are highly attractive because of their pure organic nature, ease of synthesis, structural diversity, and nontoxicity, as well as low costs. Over the past years, various CMPs have been synthesized for a broad range of photocatalytic applications. Herein, the aim is to deliver an updated summary of this field with the focus on crucial factors, which largely affect the catalytic performance of CMPs. To name a few, band structure, charge separation and transfer, and morphology are described combined with specific energy‐ and organosynthesis‐related applications such as water splitting, CO2 reduction, organic photoredox reactions, etc.

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Eosin Y‐Functionalized Conjugated Organic Polymers for Visible‐Light‐Driven CO₂ Reduction with H₂O to CO with High Efficiency

Cited by 191 publications

References 32 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

Photocatalysts Based on Organic Semiconductors with Tunable Energy Levels for Solar Fuel Applications

Recent Advances of Conjugated Microporous Polymers in Visible Light–Promoted Chemical Transformations

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Eosin Y‐Functionalized Conjugated Organic Polymers for Visible‐Light‐Driven CO2 Reduction with H2O to CO with High Efficiency

Cited by 191 publications

References 32 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

Photocatalysts Based on Organic Semiconductors with Tunable Energy Levels for Solar Fuel Applications

Recent Advances of Conjugated Microporous Polymers in Visible Light–Promoted Chemical Transformations

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Eosin Y‐Functionalized Conjugated Organic Polymers for Visible‐Light‐Driven CO₂ Reduction with H₂O to CO with High Efficiency

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