Photocatalytic activation of CO2 under visible light by Rhenium complex encapsulated in molecular sieves

Hwang, Jung Yeon; Kim, Dae Sung; Lee, Chul Wee; Park, Sang-Eon

doi:10.1007/bf02705619

Cited by 11 publications

(4 citation statements)

References 12 publications

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“…Based on host-guest interaction, molecular sieves have been used as heterogeneous host for the encapsulation of guest molecules such as organic molecules, metal complexes and organometallic fragments [13,21,22,[32][33][34]. Such inorganic solid-state supramolecular systems generate the microheterogenization of the encap- sulated molecular assemblies which show the photocatalytic activity.…”

Section: Photocatalytic Activation Of Co 2 On Rhenium Complex Encapsumentioning

confidence: 99%

Photoreduction of Carbondioxide on Surface Functionalized Nanoporous Catalysts

et al. 2005

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Nanoporous photocatalysts have been designed to exhibit unique photocatalytic activities through framework substitution of titanium species or surface immobilization of rhenium complex onto mesoporous silica. This article summarizes recent work on the synthesis, characterization and photocatalytic activities of the designed porous photocatalysts performed by the present authors. Various spectroscopic investigations revealed that the photo-excited states of these catalysts play a vital role in the photocatalytic reactions and their photocatalytic reactivities are strongly dependent on structures of active sites, which are confined and immobilized in the restricted framework structure of the mesoporous silica. Highly dispersed titanium oxide species incorporated in the framework of mesoporous silica exhibited high and unique photocatalytic reactivity for the reduction of CO 2 with H 2 O to produce CH 4 and CH 3 OH under UV irradiation, its reactivity being much higher than bulk TiO 2 . The cationic rhenium(I) complex was encapsulated into a mesoporous AlMCM-41 material by ion-exchange method, yielding a visible light photocatalyst to be active for photocatalytic reduction of CO 2 .

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Section: Photocatalytic Activation Of Co 2 On Rhenium Complex Encapsumentioning

confidence: 99%

Photoreduction of Carbondioxide on Surface Functionalized Nanoporous Catalysts

et al. 2005

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“…Various other hybrid systems involving Re(I) tricarbonyl complexes immobilized over zeolites, , silica nanoparticles, mesoporous silica, ,, MXenes, and clays were also applied for photocatalytic CO 2 reduction. Metal–organic frameworks (MOFs) and other porous coordination polymers have also been blended with Ru(II)–Re(I) supramolecule photocatalysts. − More recently, perovskite materials are also considered as efficient supports for supramolecule photocatalysts for CO 2 reduction reactions.…”

Section: Resultsmentioning

confidence: 99%

“…Various other hybrid systems involving Re(I) tricarbonyl complexes immobilized over zeolites, 232,233 silica nanoparticles, 234 mesoporous silica, 232,235,236 MXenes, 237 and clays 238 were also applied for photocatalytic CO 2 reduction. Metal− organic frameworks (MOFs) and other porous coordination polymers have also been blended with Ru(II)−Re(I) supramolecule photocatalysts.…”

Section: Table 1 Continuedmentioning

confidence: 99%

Reticular-Chemistry-Inspired Supramolecule Design as a Tool to Achieve Efficient Photocatalysts for CO₂ Reduction

et al. 2021

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Photocatalytic CO2 reduction into C1 products is one of the most trending research subjects of current times as sustainable energy generation is the utmost need of the hour. In this review, we have tried to comprehensively summarize the potential of supramolecule-based photocatalysts for CO2 reduction into C1 compounds. At the outset, we have thrown light on the inert nature of gaseous CO2 and the various challenges researchers are facing in its reduction. The evolution of photocatalysts used for CO2 reduction, from heterogeneous catalysis to supramolecule-based molecular catalysis, and subsequent semiconductor–supramolecule hybrid catalysis has been thoroughly discussed. Since CO2 is thermodynamically a very stable molecule, a huge reduction potential is required to undergo its one- or multielectron reduction. For this reason, various supramolecule photocatalysts were designed involving a photosensitizer unit and a catalyst unit connected by a linker. Later on, solid semiconductor support was also introduced in this supramolecule system to achieve enhanced durability, structural compactness, enhanced charge mobility, and extra overpotential for CO2 reduction. Reticular chemistry is seen to play a pivotal role as it allows bringing all of the positive features together from various components of this hybrid semiconductor–supramolecule photocatalyst system. Thus, here in this review, we have discussed the selection and role of various components, viz. the photosensitizer component, the catalyst component, the linker, the semiconductor support, the anchoring ligands, and the peripheral ligands for the design of highly performing CO2 reduction photocatalysts. The selection and role of various sacrificial electron donors have also been highlighted. This review is aimed to help researchers reach an understanding that may translate into the development of excellent CO2 reduction photocatalysts that are operational under visible light and possess superior activity, efficiency, and selectivity.

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“…The impetus for the study of chemical conversion of CO 2 via catalytic reactions has resulted from the pressing need to mitigate the ever-increasing concentration of CO 2 in the atmosphere. − With the controversy over the global warming issue still in the balance, the recent abrupt increase in CO 2 concentration elicits a surge of motive for the reuse of CO 2 as a chemical feedstock . Several CO 2 conversion approaches based on the catalytic reaction have proven successful, and it has been found that lowering the energy barrier for the reaction intermediates is the key to enhancing the conversion yield. − The binding energy of the intermediate species to the catalytic surface has a strong correlation with catalytic activity and product selectivity .…”

Section: Introductionmentioning

confidence: 99%

Selectivity Modulated by Surface Ligands on Cu₂O/TiO₂ Catalysts for Gas-Phase Photocatalytic Reduction of Carbon Dioxide

Jeong¹,

Kim²,

Kang

et al. 2019

J. Phys. Chem. C

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We report gas-phase photocatalytic CO2 reduction with Cu2O/TiO2 photocatalysts of varying surface passivation. With taurine adsorbed on the photocatalyst surface, the CH4 production rate increases and CO production rate decreases compared to photocatalysts with no ligand treatment. When ethylenediamine is present on Cu2O/TiO2 photocatalysts, CO selectivity enhances significantly. In situ Fourier transform infrared spectroscopy and density functional theory calculation reveal that the surface ligands on the photocatalyst surface alter the binding strength of reaction intermediates (e.g., CO) on surface atoms of the photocatalysts. Our findings cast light on a new design principle for the catalyst surface in selective CO2 conversion.

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Photocatalytic activation of CO2 under visible light by Rhenium complex encapsulated in molecular sieves

Cited by 11 publications

References 12 publications

Photoreduction of Carbondioxide on Surface Functionalized Nanoporous Catalysts

Photoreduction of Carbondioxide on Surface Functionalized Nanoporous Catalysts

Reticular-Chemistry-Inspired Supramolecule Design as a Tool to Achieve Efficient Photocatalysts for CO₂ Reduction

Selectivity Modulated by Surface Ligands on Cu₂O/TiO₂ Catalysts for Gas-Phase Photocatalytic Reduction of Carbon Dioxide

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Photocatalytic activation of CO2 under visible light by Rhenium complex encapsulated in molecular sieves

Cited by 11 publications

References 12 publications

Photoreduction of Carbondioxide on Surface Functionalized Nanoporous Catalysts

Photoreduction of Carbondioxide on Surface Functionalized Nanoporous Catalysts

Reticular-Chemistry-Inspired Supramolecule Design as a Tool to Achieve Efficient Photocatalysts for CO2 Reduction

Selectivity Modulated by Surface Ligands on Cu2O/TiO2 Catalysts for Gas-Phase Photocatalytic Reduction of Carbon Dioxide

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Product

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About

Reticular-Chemistry-Inspired Supramolecule Design as a Tool to Achieve Efficient Photocatalysts for CO₂ Reduction

Selectivity Modulated by Surface Ligands on Cu₂O/TiO₂ Catalysts for Gas-Phase Photocatalytic Reduction of Carbon Dioxide