Incorporation of chemical functionalities in the framework of mesoporous silica

Linares, Noemi; Serrano, Elena; Rico, Marisa; Balu, Alina M.; Losada, Elia; Luque, Rafael; García‐Martínez, Javier

doi:10.1039/c1cc11016k

Cited by 125 publications

(97 citation statements)

References 124 publications

(106 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Mesoporous silica and silica-alumina, which exhibit well-defined pore systems, tunable pore diameters (2-30 nm), narrow pore size distributions, and high surface areas, have frequently been used to introduce various chemical functionalities (22)(23)(24)(25)(26)(27)(28). The incorporation of Acr þ -Mes into nanosized mesoporous silica-alumina can remarkably enhance the photostability of Acr þ -Mes.…”

mentioning

confidence: 99%

Formation of a long-lived electron-transfer state in mesoporous silica-alumina composites enhances photocatalytic oxygenation reactivity

Fukuzumi

Doi

Itoh

et al. 2012

Proc. Natl. Acad. Sci. U.S.A.

119

View full text Add to dashboard Cite

A simple donor-acceptor linked dyad, 9-mesityl-10-methylacridinium ion (Acr þ -Mes) was incorporated into nanosized mesoporous silica-alumina to form a composite, which in acetonitrile is highly dispersed. In this medium, upon visible light irradiation, the formation of an extremely long-lived electron-transfer state (Acr • -Mes •þ ) was confirmed by EPR and laser flash photolysis spectroscopic methods. The composite of Acr þ -Mes-incorporated mesoporous silica-alumina with an added copper complex [ðtmpaÞCu II ]ðClO 4 − Þ 2 (tmpa ¼ trisð2-pyridylmethylÞamine) acts as an efficient and robust photocatalyst for the selective oxygenation of p-xylene by molecular oxygen to produce p-tolualdehyde and hydrogen peroxide. Thus, incorporation of Acr þ -Mes into nanosized mesoporous silica-alumina combined with an O 2 -reduction catalyst (½ðtmpaÞCu II 2þ ) provides a promising method in the development of efficient and robust organic photocatalysts for substrate oxygenation by dioxygen, the ultimate environmentally benign oxidant.copper complex catalyst | donor-acceptor dyad | nanosized silica-alumina | p-xylene | photoinduced electron transfer

show abstract

mentioning

confidence: 99%

Formation of a long-lived electron-transfer state in mesoporous silica-alumina composites enhances photocatalytic oxygenation reactivity

Fukuzumi

Doi

Itoh

et al. 2012

Proc. Natl. Acad. Sci. U.S.A.

119

View full text Add to dashboard Cite

show abstract

“…has been reported to improve their stability and reusability without significantly reducing their catalytic activity [12][13][14]. Based on previous studies, mesoporous silica materials have attracted a great deal of attention due to their large specific surface area, high mechanical strength and tunable surface functionalities [15]. The cellulase activity has been shown to be largely dependent on pore size and surface area of the support, different immobilization methods (i.e.…”

Section: Immobilized Catalytic Systemsmentioning

confidence: 99%

Integrated enzymatic catalysis for biomass deconstruction: a partnership for a sustainable future

Luque

2015

sustain chem process

Self Cite

View full text Add to dashboard Cite

Deconstruction of lignocellulosic biomass using enzymatic catalysis can offer several advantages as compared to chemical catalysis in terms of product selectivity, production cost and sustainability issues. This contribution aims to provide an account of current developments in the understanding of plant biomass microstructures and the impact of various enzymatic processes on cellulose decrystallization. Critical problems, including biomass recalcitrance, and operational factors, including potential solutions to improve their effectiveness as alternatives in future biorefineries, will be also discussed.

show abstract

“…5,6 Recently, the in situ synthesis of mesoporous silicas with metal NPs entrapped in the nanopore has been reported using a colloidal solution of ligand-stabilized metal NPs as one of the precursors. [7][8][9][10][11][12][13][14][15][16][17][18][19] For example, PVP-stabilized platinum NPs were entrapped in the mesopores of SBA-15 during hydrothermal process through the interaction of PVP and surfactants.…”

Section: Introductionmentioning

confidence: 99%

Entrapment of metal nanoparticles within nanocages of mesoporous silicas aided by co-surfactants

Liu

Yang

et al. 2012

J. Mater. Chem.

View full text Add to dashboard Cite

We demonstrated an efficient approach for in situ encapsulation of metal nanoparticles (NPs) into nanocages of mesoporous silicas using a co-surfactant as the transportation medium. By using this approach, colloidal Pt and Au NPs were successfully encapsulated into the nanocages of cagelike mesoporous silicas (CMS) and FDU-12 using co-surfactants butanol and mesitylene (TMB) as the transportation medium, respectively. The prepared Pt/CMS catalysts are active and highly selective in the hydrogenation of chloronitrobenzene (CNB) to the corresponding chloroaniline (CAN). The catalyst prepared by the in situ method is superior to the catalyst prepared by the traditional solution impregnation method. This work provides a new approach for the synthesis of the mesoporous materials with encapsulated metal NPs.

show abstract

Incorporation of chemical functionalities in the framework of mesoporous silica

Cited by 125 publications

References 124 publications

Formation of a long-lived electron-transfer state in mesoporous silica-alumina composites enhances photocatalytic oxygenation reactivity

Formation of a long-lived electron-transfer state in mesoporous silica-alumina composites enhances photocatalytic oxygenation reactivity

Integrated enzymatic catalysis for biomass deconstruction: a partnership for a sustainable future

Entrapment of metal nanoparticles within nanocages of mesoporous silicas aided by co-surfactants

Contact Info

Product

Resources

About