Tailoring open metal sites for selective capture of CO<sub>2</sub>in isostructural metalloporphyrin porous organic networks

Choi, Hwa Seob; Jeon, Hyung Joon; Choi, Jung Hoon; Lee, Gyu-Heon; Kang, Jeung Ku

doi:10.1039/c5nr05696a

Cited by 17 publications

(15 citation statements)

References 29 publications

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“…The above results prove that the larger specific surface area and pores are beneficial to CO 2 uptake [19]. To quantify CO 2 adsorption, the isosteric heat (Q st ) at both 273 and 298 K was calculated on the basis of the Clausius-Clapeyron equation [67,68]. As shown in Fig.…”

Section: Resultsmentioning

confidence: 67%

“…4f, the CO 2 uptake increases sharply as the pressure increases, while the N 2 adsorption capacity only slightly increases in the same pressure range. The selectivity of CO 2 over N 2 gas (i.e., the ratio of the initial slopes of CO 2 and N 2 adsorption isotherms) based on the ideal adsorption solution theory, is calculated to be 30.1 for ZIS/NGF1 that is even comparable to those values of porous polymer network-based [71] and MOF-based materials [67]. Again, the aforementioned results exemplify the strong interactions between CO 2 and polar sites associated with nitrogen-containing groups [71,72].…”

Section: Resultsmentioning

confidence: 94%

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Near-infrared absorbing 2D/3D ZnIn2S4/N-doped graphene photocatalyst for highly efficient CO2 capture and photocatalytic reduction

et al. 2020

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Hierarchical heterostructure photocatalysts with broad spectrum solar light utilization, particularly in the nearinfrared (NIR) region, are emerging classes of advanced photocatalytic materials for solar-driven CO 2 conversion into value-added chemical feedstocks. Herein, a novel two-demensional/three-demensional (2D/3D) hierarchical composite is hydrothermally synthesized by assembling vertically-aligned ZnIn 2 S 4 (ZIS) nanowall arrays on nitrogen-doped graphene foams (NGF). The prepared ZIS/NGF composite shows enhancement in photothermal conversion ability and selective CO 2 capture as well as solar-driven CO 2 photoreduction. At 273 K and 1 atm, the ZIS/NGF composite with 1.0 wt% NGF achieves a comparably high CO 2-toN 2 selectivity of 30.1, with an isosteric heat of CO 2 adsorption of 48.2 kJ mol −1. And in the absence of cocatalysts and sacrificial agents, the ZIS/NGF composite with cyclability converts CO 2 into CH 4 , CO and CH 3 OH under simulated solar light illumination, with the respective evolution rates about 9.1, 3.5, and 5.9 times higher than that of the pristine ZIS. In-depth analysis using in-situ irradiated X-ray photoelectron spectroscopy (ISI-XPS) in conjunction with Kelvin probe measurements reveals the underlying charge transfer pathway and process from ZIS to NGF.

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Section: Resultsmentioning

confidence: 67%

Section: Resultsmentioning

confidence: 94%

Near-infrared absorbing 2D/3D ZnIn2S4/N-doped graphene photocatalyst for highly efficient CO2 capture and photocatalytic reduction

et al. 2020

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“…Kang et al. have tuned the central metal ions from Co, Ni and Cu, and observed similar progressive increase in Q st , suggesting stronger binding of CO 2 at the adsorbent surfaces in this order.…”

Section: Synthesis Of Different Organic Frameworkmentioning

confidence: 74%

Porous Organic Polymers for CO₂ Storage and Conversion Reactions

2018

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To overcome the challenges of global warming and environmental pollution it is mandatory to reduce the concentration of atmospheric carbon dioxide (CO2), which is largely accumulated in air through the combustion of fossil fuels. Thus, sequestration of CO2 through physisorption on solid adsorbents and their successful conversion into value added fine chemicals are the major priority areas of research today. Innovation of efficient solid CO2‐philic adsorbents together with their high mechanical/chemical stability and regeneration efficiency are the most challenging objectives to achieve this goal. In this context, porous organic polymers (POPs) owing to their high specific surface area, chemical stability, nanoscale porosity and structural diversity have huge potential to play as selective CO2 adsorbent. POPs synthesized through large varieties of reactive monomers via simple and convenient chemical routes can be the ideal adsorbents for the CO2 storage and fixation reactions. A wide range of POPs can be synthesized from different multidentate amines, aldehydes, carboxylic acids or triazine monomers through the polycondensation reactions or solid state condensation reactions. Ease of synthesis, uniform pore width together with high surface area and surface basic sites (nitrogen and other heteroelements) play crucial role in the CO2 absorption and conversion reactions. This review provides a concise account in designing POPs and their application in CO2 adsorption and fixation into reactive organic molecules for the synthesis of fuels and value added fine chemicals.

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“…Noting that the BET surface area of Co-POM is only twice that of POM, while CO2 uptake of Co-POM is about five times that of POM, it is obviously implied that Co-porphyrin site has more affinity towards CO2 molecule, as confirmed by other reports. [34,35] <H2>3.2. Photocatalytic CO2 reduction…”

Section: Resultsmentioning

confidence: 97%

Co-porphyrin/carbon nitride hybrids for improved photocatalytic CO2 reduction under visible light

Zhao

Pang

Liu

et al. 2017

Applied Catalysis B: Environmental

211

108

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Tailoring open metal sites for selective capture of CO₂in isostructural metalloporphyrin porous organic networks

Cited by 17 publications

References 29 publications

Near-infrared absorbing 2D/3D ZnIn2S4/N-doped graphene photocatalyst for highly efficient CO2 capture and photocatalytic reduction

Near-infrared absorbing 2D/3D ZnIn2S4/N-doped graphene photocatalyst for highly efficient CO2 capture and photocatalytic reduction

Porous Organic Polymers for CO₂ Storage and Conversion Reactions

Co-porphyrin/carbon nitride hybrids for improved photocatalytic CO2 reduction under visible light

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Tailoring open metal sites for selective capture of CO2in isostructural metalloporphyrin porous organic networks

Cited by 17 publications

References 29 publications

Near-infrared absorbing 2D/3D ZnIn2S4/N-doped graphene photocatalyst for highly efficient CO2 capture and photocatalytic reduction

Near-infrared absorbing 2D/3D ZnIn2S4/N-doped graphene photocatalyst for highly efficient CO2 capture and photocatalytic reduction

Porous Organic Polymers for CO2 Storage and Conversion Reactions

Co-porphyrin/carbon nitride hybrids for improved photocatalytic CO2 reduction under visible light

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Tailoring open metal sites for selective capture of CO₂in isostructural metalloporphyrin porous organic networks

Porous Organic Polymers for CO₂ Storage and Conversion Reactions