Recent Advances of Photocatalytic Hydrogenation of CO2 to Methanol

Shinde, Gajanan Y.; Mote, Abhishek S.; Gawande, Manoj B.

doi:10.3390/catal12010094

Cited by 28 publications

(15 citation statements)

References 111 publications

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“…This issue could also most likely be connected to the ease of hydrogen diffusion and access to the Ni or Cu sites, as was mentioned earlier for the 2D g-C 3 N 4 structure with well-described cavities, porous structure, and interlayer distances. 13 , 15 , 19 , 27 , 30 , 38 Similarly, graphitic carbon nitride nanotubes were considered to be a promising hydrogen sorbent because of their highly porous structure and doubly bound nitrogen at the edges of the pores. 60 , 61 These reasons may be responsible for facilitating hydrogen diffusion into the interior of the nanotubes, thus providing active sites for hydrogen adsorption and/or functionalization with metal catalysts.…”

Section: Resultsmentioning

confidence: 99%

Developing Benign Ni/g-C₃N₄ Catalysts for CO₂ Hydrogenation: Activity and Toxicity Study

Pieta

Gieroba

Kalisz

et al. 2022

Ind. Eng. Chem. Res.

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This research discusses the CO 2 valorization via hydrogenation over the non-noble metal clusters of Ni and Cu supported on graphitic carbon nitride (g-C 3 N 4 ). The Ni and Cu catalysts were characterized by conventional techniques including XRD, AFM, ATR, Raman imaging, and TPR and were tested via the hydrogenation of CO 2 at 1 bar. The transition-metal-based catalyst designed with atom-economy principles presents stable activity and good conversions for the studied processes. At 1 bar, the rise in operating temperature during CO 2 hydrogenation increases the CO 2 conversion and the selectivity for CO and decreases the selectivity for methanol on Cu/CN catalysts. For the Ni/CN catalyst, the selectivity to light hydrocarbons, such as CH 4 , also increased with rising temperature. At 623 K, the conversion attained ca. 20%, with CH 4 being the primary product of the reaction (CH 4 yield >80%). Above 700 K, the Ni/CN activity increases, reaching almost equilibrium values, although the Ni loading in Ni/CN is lower by more than 90% compared to the reference NiREF catalyst. The presented data offer a better understanding of the effect of the transition metals’ small metal cluster and their coordination and stabilization within g-C 3 N 4 , contributing to the rational hybrid catalyst design with a less-toxic impact on the environment and health. Bare g-C 3 N 4 is shown as a good support candidate for atom-economy-designed catalysts for hydrogenation application. In addition, cytotoxicity to the keratinocyte human HaCaT cell line revealed that low concentrations of catalysts particles (to 6.25 μg mL –1 ) did not cause degenerative changes.

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Section: Resultsmentioning

confidence: 99%

Developing Benign Ni/g-C₃N₄ Catalysts for CO₂ Hydrogenation: Activity and Toxicity Study

Pieta

Gieroba

Kalisz

et al. 2022

Ind. Eng. Chem. Res.

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“…By thermolysis, they showed the existence of the transient open-chain isomer of the amidinate, which is responsible for its FLP characteristics. Very recently, the photocatalytic hydrogenation of CO 2 to CH 3 OH [85] and CO 2 hydrogenation over magnetic nanoparticles [86] are reported. Concerted H + and H − transfer to the substrate is also a possibility as observed in the hydrogenation of CO2 to HCOOH [82].…”

Section: Catalytic Hydrogenation Of Comentioning

confidence: 99%

Activation of Small Molecules and Hydrogenation of CO2 Catalyzed by Frustrated Lewis Pairs

2022

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The chemistry of frustrated Lewis pair (FLP) is widely explored in the activation of small molecules, the hydrogenation of CO2, and unsaturated organic species. A survey of several experimental works on the activation of small molecules by FLPs and the related mechanistic insights into their reactivity from electronic structure theory calculation are provided in the present review, along with the catalytic hydrogenation of CO2. The mechanistic insight into H2 activation is thoroughly discussed, which may provide a guideline to design more efficient FLP for H2 activation. FLPs can activate other small molecules like, CO, NO, CO2, SO2, N2O, alkenes, alkynes, etc. by cooperative action of the Lewis centers of FLPs, as revealed by several computational analyses. The activation barrier of H2 and other small molecules by the FLP can be decreased by utilizing the aromaticity criterion in the FLP as demonstrated by the nucleus independent chemical shift (NICS) analysis. The term boron-ligand cooperation (BLC), which is analogous to the metal-ligand cooperation (MLC), is invoked to describe a distinct class of reactivity of some specific FLPs towards H2 activation.

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“…MOFs have advanced photoreduction of CO 2 . [284,[305][306][307][308][309][310][311][312][313][314][315][316][317][318][319][320][321][322] The reaction requires a ZIF materials with good light absorption. Most of the reported ZIF materials lack high visible-light absorption.…”

Section: Hydrogenation For Comentioning

confidence: 99%

Removal of carbon dioxide using zeolitic imidazolate frameworks: Adsorption and conversion via catalysis

Abdelhamid

2022

Applied Organom Chemis

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Carbon dioxide (CO2) is one of the culprit causes of global climatic changes. Furthermore, the efficient separation of CO2 from other gaseous mixtures using zeolitic imidazolate framework (ZIF)‐based materials is vital for several processes such as flue gas separation, gas sweetening, and natural gas processing. ZIF‐based materials are emerging adsorbents and catalysts for CO2 gas removal via adsorption and conversion into valuable chemicals. ZIF‐based adsorbents with high‐adsorption/conversion efficiencies and tunable properties can be achieved by judicious synthesis and fabrication methods. We reviewed ZIF‐based materials for CO2 removal via adsorption and catalysis (e.g., cycloaddition, carboxylation, hydrogenation, N‐formylation, electrocatalysis, and photocatalysis). In addition, recent development methods such as membrane technologies and ways to improve the gas separation performance of ZIF membranes were highlighted. The prospective point of view to promote industrial applications and commercialization of ZIF‐based materials was briefly discussed. Once challenges such as low performance and reproducibility for ZIF‐based materials are solved, scalability and cost‐effectiveness should not become issues.

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Recent Advances of Photocatalytic Hydrogenation of CO2 to Methanol

Cited by 28 publications

References 111 publications

Developing Benign Ni/g-C₃N₄ Catalysts for CO₂ Hydrogenation: Activity and Toxicity Study

Developing Benign Ni/g-C₃N₄ Catalysts for CO₂ Hydrogenation: Activity and Toxicity Study

Activation of Small Molecules and Hydrogenation of CO2 Catalyzed by Frustrated Lewis Pairs

Removal of carbon dioxide using zeolitic imidazolate frameworks: Adsorption and conversion via catalysis

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Recent Advances of Photocatalytic Hydrogenation of CO2 to Methanol

Cited by 28 publications

References 111 publications

Developing Benign Ni/g-C3N4 Catalysts for CO2 Hydrogenation: Activity and Toxicity Study

Developing Benign Ni/g-C3N4 Catalysts for CO2 Hydrogenation: Activity and Toxicity Study

Activation of Small Molecules and Hydrogenation of CO2 Catalyzed by Frustrated Lewis Pairs

Removal of carbon dioxide using zeolitic imidazolate frameworks: Adsorption and conversion via catalysis

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Product

Resources

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Developing Benign Ni/g-C₃N₄ Catalysts for CO₂ Hydrogenation: Activity and Toxicity Study

Developing Benign Ni/g-C₃N₄ Catalysts for CO₂ Hydrogenation: Activity and Toxicity Study