Photoactive Characteristics of Rhenium Complex Encapsulated in A1MCM-41 by Ion-exchange Method

Park, S.-E.; Sung-Suh, Hyung Mi; Kim, D.S.; Ko, Jaejung

doi:10.1016/s0167-2991(00)80286-4

Cited by 4 publications

(5 citation statements)

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“…Most studies on photochemical reduction of CO 2 using Re(I) complexes have focused on the homogeneous solution systems. There are only few reports concerning the encapsulation of rhenium complexes into molecular sieves and their photochemical application to the photochemical reduction of CO 2 [21,22,32]. In the present case, the cationic complex, [Re(I)(CO) 3 (bpy)(py)] + (py ¼ pyridine) was encapsulated into the mesopore of Al-MCM-41 and its photophysical properties were characterized by several spectroscopic tools.…”

Section: Photocatalytic Activation Of Co 2 On Rhenium Complex Encapsumentioning

confidence: 93%

“…The complex was encapsulated into the mesoporous AlMCM-41 (Si/Al ¼ 30) molecular sieves by ion exchange method using the aqueous solution of [Re(CO) 3 (bpy)(py)] + PF 6 ) . The encapsulated samples were evacuated (<10 )4 Torr) at 373 K for 16 h [21,22].…”

Section: Preparation Of Mesoporous Photocatalystsmentioning

confidence: 99%

“…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%

“…The cationic [Re(CO) 3 (bpy)(py)] + complex was encapsulated into the mesoporous Al-MCM-41 (Si/ Al ¼ 30) molecular sieve by an ion-exchange method [21] using an aqueous solution of [Re(CO) 3 (bpy) (py)]PF 6 , which was used as a photosensitizer. The encapsulated rhenium complex, [Re(CO) 3 (bpy)(py)] + / AlMCM-41, was evacuated (<10 )7 bar) at 100°C for 16 h and then was utilized for spectroscopic characterization.…”

Section: Photocatalytic Activation Of Co 2 On Rhenium Complex Encapsumentioning

confidence: 99%

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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: 93%

Section: Preparation Of Mesoporous Photocatalystsmentioning

confidence: 99%

Section: Photocatalytic Activation Of Co 2 On Rhenium Complex Encapsumentioning

confidence: 99%

Section: Photocatalytic Activation Of Co 2 On Rhenium Complex Encapsumentioning

confidence: 99%

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Photoreduction of Carbondioxide on Surface Functionalized Nanoporous Catalysts

et al. 2005

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“…polyaniline in MCM-41 [61]). These examples, together with other photoionization processes involving reactants immobilized inside MCM-41 or SBA-15 MPS [65][66][67], illustrate the possibility of charge transfer reactions in these mesostructured materials, opening the door for electrode-driven processes.…”

Section: Interest Of Ordered Mps In Electrochemistrymentioning

confidence: 99%

Impact of mesoporous silica-based materials on electrochemistry and feedback from electrochemical science to the characterization of these ordered materials

Walcarius

2005

Comptes Rendus. Chimie

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An overview is presented dealing with the intersection between the chemistry of ordered mesoporous silica (MPS)-based materials and electrochemistry. After a brief discussion on the interest of these materials for the electrochemists community, the various strategies applied to confine such insulating solids at an electrode surface are described. The use of electrochemical techniques to characterize the materials properties is then illustrated in two fields: the redox activity of immobilized electroactive probes and the analysis of mass transfer processes in organically-modified MPS. Afterwards, the exploitation of the attractive properties of the ordered MPS-based materials for electrochemical applications is described via several examples: voltammetric analysis after preconcentration, electrocatalysis, bioelectrochemistry, and gas sensors.

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